diff --git a/configs/amber/hello/Make.defs b/configs/amber/hello/Make.defs
index 1c2d8b89e1..15c31f1923 100644
--- a/configs/amber/hello/Make.defs
+++ b/configs/amber/hello/Make.defs
@@ -88,7 +88,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/avr32dev1/nsh/Make.defs b/configs/avr32dev1/nsh/Make.defs
index 46fef6ec1e..aa84884d06 100644
--- a/configs/avr32dev1/nsh/Make.defs
+++ b/configs/avr32dev1/nsh/Make.defs
@@ -78,7 +78,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = -Os -ffunction-sections -fdata-sections -fno-strict-aliasing
@@ -110,7 +110,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
diff --git a/configs/avr32dev1/ostest/Make.defs b/configs/avr32dev1/ostest/Make.defs
index ad74d889cc..ab8c9cd36c 100644
--- a/configs/avr32dev1/ostest/Make.defs
+++ b/configs/avr32dev1/ostest/Make.defs
@@ -78,7 +78,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = -Os -ffunction-sections -fdata-sections -fno-strict-aliasing
@@ -110,7 +110,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
diff --git a/configs/c5471evm/httpd/Make.defs b/configs/c5471evm/httpd/Make.defs
index 4d94d83427..45a567ec43 100644
--- a/configs/c5471evm/httpd/Make.defs
+++ b/configs/c5471evm/httpd/Make.defs
@@ -48,7 +48,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -82,11 +82,10 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
-
 MKDEP			= $(TOPDIR)/tools/mkdeps.sh
 
 HOSTCC			= gcc
diff --git a/configs/c5471evm/nettest/Make.defs b/configs/c5471evm/nettest/Make.defs
index 1f8b7afa17..0db0a8dc9c 100644
--- a/configs/c5471evm/nettest/Make.defs
+++ b/configs/c5471evm/nettest/Make.defs
@@ -48,7 +48,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -82,11 +82,10 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
-
 MKDEP			= $(TOPDIR)/tools/mkdeps.sh
 
 HOSTCC			= gcc
diff --git a/configs/c5471evm/nsh/Make.defs b/configs/c5471evm/nsh/Make.defs
index 68a15703e3..8d3a3adc1c 100644
--- a/configs/c5471evm/nsh/Make.defs
+++ b/configs/c5471evm/nsh/Make.defs
@@ -48,7 +48,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -82,11 +82,10 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
-
 MKDEP			= $(TOPDIR)/tools/mkdeps.sh
 
 HOSTCC			= gcc
diff --git a/configs/c5471evm/ostest/Make.defs b/configs/c5471evm/ostest/Make.defs
index 8a0f8c812f..c834591732 100644
--- a/configs/c5471evm/ostest/Make.defs
+++ b/configs/c5471evm/ostest/Make.defs
@@ -48,7 +48,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -82,11 +82,10 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
-
 MKDEP			= $(TOPDIR)/tools/mkdeps.sh
 
 HOSTCC			= gcc
diff --git a/configs/compal_e88/nsh_highram/Make.defs b/configs/compal_e88/nsh_highram/Make.defs
index c5890828f8..2d65c2782f 100644
--- a/configs/compal_e88/nsh_highram/Make.defs
+++ b/configs/compal_e88/nsh_highram/Make.defs
@@ -57,7 +57,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -91,7 +91,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/compal_e99/nsh_compalram/Make.defs b/configs/compal_e99/nsh_compalram/Make.defs
index 16e38b666b..f93a01f04c 100644
--- a/configs/compal_e99/nsh_compalram/Make.defs
+++ b/configs/compal_e99/nsh_compalram/Make.defs
@@ -57,7 +57,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -91,7 +91,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/compal_e99/nsh_highram/Make.defs b/configs/compal_e99/nsh_highram/Make.defs
index c5890828f8..2d65c2782f 100644
--- a/configs/compal_e99/nsh_highram/Make.defs
+++ b/configs/compal_e99/nsh_highram/Make.defs
@@ -57,7 +57,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -91,7 +91,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/demo9s12ne64/ostest/Make.defs b/configs/demo9s12ne64/ostest/Make.defs
index 9edf5adf9c..e6fdb9952f 100644
--- a/configs/demo9s12ne64/ostest/Make.defs
+++ b/configs/demo9s12ne64/ostest/Make.defs
@@ -84,7 +84,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3131/nsh/Make.defs b/configs/ea3131/nsh/Make.defs
index 28e881ccb4..a061eb22cf 100644
--- a/configs/ea3131/nsh/Make.defs
+++ b/configs/ea3131/nsh/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3131/ostest/Make.defs b/configs/ea3131/ostest/Make.defs
index ed7eb92903..ba750e2122 100644
--- a/configs/ea3131/ostest/Make.defs
+++ b/configs/ea3131/ostest/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3131/pgnsh/Make.defs b/configs/ea3131/pgnsh/Make.defs
index 7b09759ead..c142319dea 100644
--- a/configs/ea3131/pgnsh/Make.defs
+++ b/configs/ea3131/pgnsh/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3131/usbserial/Make.defs b/configs/ea3131/usbserial/Make.defs
index 614221fb37..ef64e26157 100644
--- a/configs/ea3131/usbserial/Make.defs
+++ b/configs/ea3131/usbserial/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3131/usbstorage/Make.defs b/configs/ea3131/usbstorage/Make.defs
index 4aa007069e..7393606158 100644
--- a/configs/ea3131/usbstorage/Make.defs
+++ b/configs/ea3131/usbstorage/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ea3152/ostest/Make.defs b/configs/ea3152/ostest/Make.defs
index 8ca8f6e6a9..f69eb5e957 100644
--- a/configs/ea3152/ostest/Make.defs
+++ b/configs/ea3152/ostest/Make.defs
@@ -88,7 +88,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/httpd/Make.defs b/configs/eagle100/httpd/Make.defs
index 4d5024d247..ef5b28ede5 100644
--- a/configs/eagle100/httpd/Make.defs
+++ b/configs/eagle100/httpd/Make.defs
@@ -74,7 +74,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/nettest/Make.defs b/configs/eagle100/nettest/Make.defs
index 98b544ed9b..ac9e7853b3 100644
--- a/configs/eagle100/nettest/Make.defs
+++ b/configs/eagle100/nettest/Make.defs
@@ -74,7 +74,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/nsh/Make.defs b/configs/eagle100/nsh/Make.defs
index efd473f7ab..3bc31ce777 100644
--- a/configs/eagle100/nsh/Make.defs
+++ b/configs/eagle100/nsh/Make.defs
@@ -74,7 +74,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/nxflat/Make.defs b/configs/eagle100/nxflat/Make.defs
index 6c6965d202..2c8aa9c44d 100644
--- a/configs/eagle100/nxflat/Make.defs
+++ b/configs/eagle100/nxflat/Make.defs
@@ -77,7 +77,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/ostest/Make.defs b/configs/eagle100/ostest/Make.defs
index f28f6d90be..4eb37853b0 100644
--- a/configs/eagle100/ostest/Make.defs
+++ b/configs/eagle100/ostest/Make.defs
@@ -74,7 +74,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/eagle100/thttpd/Make.defs b/configs/eagle100/thttpd/Make.defs
index 83abbe411a..dbdfddf1b5 100644
--- a/configs/eagle100/thttpd/Make.defs
+++ b/configs/eagle100/thttpd/Make.defs
@@ -77,7 +77,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ekk-lm3s9b96/nsh/Make.defs b/configs/ekk-lm3s9b96/nsh/Make.defs
index c14dccbb91..1563e73a97 100644
--- a/configs/ekk-lm3s9b96/nsh/Make.defs
+++ b/configs/ekk-lm3s9b96/nsh/Make.defs
@@ -97,7 +97,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ekk-lm3s9b96/ostest/Make.defs b/configs/ekk-lm3s9b96/ostest/Make.defs
index 4068b73fd4..b052c86aeb 100644
--- a/configs/ekk-lm3s9b96/ostest/Make.defs
+++ b/configs/ekk-lm3s9b96/ostest/Make.defs
@@ -97,7 +97,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ez80f910200kitg/ostest/Make.defs b/configs/ez80f910200kitg/ostest/Make.defs
index 4eaf34fe01..88280d8ecb 100644
--- a/configs/ez80f910200kitg/ostest/Make.defs
+++ b/configs/ez80f910200kitg/ostest/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/ez80f910200zco/dhcpd/Make.defs b/configs/ez80f910200zco/dhcpd/Make.defs
index 326ea137b2..d8e7d33fe4 100644
--- a/configs/ez80f910200zco/dhcpd/Make.defs
+++ b/configs/ez80f910200zco/dhcpd/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/ez80f910200zco/httpd/Make.defs b/configs/ez80f910200zco/httpd/Make.defs
index 6a30c70004..2a8ffb04f1 100644
--- a/configs/ez80f910200zco/httpd/Make.defs
+++ b/configs/ez80f910200zco/httpd/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/ez80f910200zco/nettest/Make.defs b/configs/ez80f910200zco/nettest/Make.defs
index ce32366643..95a5b4201b 100644
--- a/configs/ez80f910200zco/nettest/Make.defs
+++ b/configs/ez80f910200zco/nettest/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/ez80f910200zco/nsh/Make.defs b/configs/ez80f910200zco/nsh/Make.defs
index 9dbaceb645..978e406b78 100644
--- a/configs/ez80f910200zco/nsh/Make.defs
+++ b/configs/ez80f910200zco/nsh/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/ez80f910200zco/ostest/Make.defs b/configs/ez80f910200zco/ostest/Make.defs
index 6a49cbc573..1a2759cff3 100644
--- a/configs/ez80f910200zco/ostest/Make.defs
+++ b/configs/ez80f910200zco/ostest/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF = _EZ80F91
 ARCHFAMILY = _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION = -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS = $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -debug -reduceopt
 else
   ARCHOPTIMIZATION = -nodebug -optsize
diff --git a/configs/ez80f910200zco/poll/Make.defs b/configs/ez80f910200zco/poll/Make.defs
index fd32a6df63..c9a9a83ea0 100644
--- a/configs/ez80f910200zco/poll/Make.defs
+++ b/configs/ez80f910200zco/poll/Make.defs
@@ -80,7 +80,7 @@ ARCHCPUDEF		= _EZ80F91
 ARCHFAMILY		= _EZ80ACCLAIM!
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -NOsdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -NOsdiopt
@@ -97,7 +97,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -optsize
diff --git a/configs/fire-stm32v2/nsh/Make.defs b/configs/fire-stm32v2/nsh/Make.defs
index bd63f7c6be..271d4ab17c 100644
--- a/configs/fire-stm32v2/nsh/Make.defs
+++ b/configs/fire-stm32v2/nsh/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/buttons/Make.defs b/configs/hymini-stm32v/buttons/Make.defs
index 565729c1a1..fde36e025b 100644
--- a/configs/hymini-stm32v/buttons/Make.defs
+++ b/configs/hymini-stm32v/buttons/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/nsh/Make.defs b/configs/hymini-stm32v/nsh/Make.defs
index 285bbe40ab..f819679f29 100644
--- a/configs/hymini-stm32v/nsh/Make.defs
+++ b/configs/hymini-stm32v/nsh/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/nsh2/Make.defs b/configs/hymini-stm32v/nsh2/Make.defs
index 9ad8c2774a..c1c55a1f70 100644
--- a/configs/hymini-stm32v/nsh2/Make.defs
+++ b/configs/hymini-stm32v/nsh2/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/nx/Make.defs b/configs/hymini-stm32v/nx/Make.defs
index 84700e0828..2d26b881b1 100644
--- a/configs/hymini-stm32v/nx/Make.defs
+++ b/configs/hymini-stm32v/nx/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/nxlines/Make.defs b/configs/hymini-stm32v/nxlines/Make.defs
index b9e8841f0a..1970020f1b 100644
--- a/configs/hymini-stm32v/nxlines/Make.defs
+++ b/configs/hymini-stm32v/nxlines/Make.defs
@@ -110,7 +110,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/usbserial/Make.defs b/configs/hymini-stm32v/usbserial/Make.defs
index 559af81de5..68a0618b0a 100644
--- a/configs/hymini-stm32v/usbserial/Make.defs
+++ b/configs/hymini-stm32v/usbserial/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/hymini-stm32v/usbstorage/Make.defs b/configs/hymini-stm32v/usbstorage/Make.defs
index 5fef4f705d..b59091c5e5 100644
--- a/configs/hymini-stm32v/usbstorage/Make.defs
+++ b/configs/hymini-stm32v/usbstorage/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/kwikstik-k40/ostest/Make.defs b/configs/kwikstik-k40/ostest/Make.defs
index f239d872d4..7f260d2671 100644
--- a/configs/kwikstik-k40/ostest/Make.defs
+++ b/configs/kwikstik-k40/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lincoln60/nsh/Make.defs b/configs/lincoln60/nsh/Make.defs
index cf76f97f28..8d17270240 100644
--- a/configs/lincoln60/nsh/Make.defs
+++ b/configs/lincoln60/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lincoln60/ostest/Make.defs b/configs/lincoln60/ostest/Make.defs
index 044b27dc43..e8a4ec3ea5 100644
--- a/configs/lincoln60/ostest/Make.defs
+++ b/configs/lincoln60/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s6432-s2e/nsh/Make.defs b/configs/lm3s6432-s2e/nsh/Make.defs
index 795d928d2e..6597c42838 100644
--- a/configs/lm3s6432-s2e/nsh/Make.defs
+++ b/configs/lm3s6432-s2e/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s6432-s2e/ostest/Make.defs b/configs/lm3s6432-s2e/ostest/Make.defs
index 8a0fc03175..3ac4c12ac4 100644
--- a/configs/lm3s6432-s2e/ostest/Make.defs
+++ b/configs/lm3s6432-s2e/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s6965-ek/nsh/Make.defs b/configs/lm3s6965-ek/nsh/Make.defs
index 72ea6b151e..d8c4978bda 100644
--- a/configs/lm3s6965-ek/nsh/Make.defs
+++ b/configs/lm3s6965-ek/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s6965-ek/nx/Make.defs b/configs/lm3s6965-ek/nx/Make.defs
index 2a409101bb..eccfcde079 100644
--- a/configs/lm3s6965-ek/nx/Make.defs
+++ b/configs/lm3s6965-ek/nx/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s6965-ek/ostest/Make.defs b/configs/lm3s6965-ek/ostest/Make.defs
index ae376da0c5..fe15153db3 100644
--- a/configs/lm3s6965-ek/ostest/Make.defs
+++ b/configs/lm3s6965-ek/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s8962-ek/nsh/Make.defs b/configs/lm3s8962-ek/nsh/Make.defs
index b0b57559c0..3269059c9b 100644
--- a/configs/lm3s8962-ek/nsh/Make.defs
+++ b/configs/lm3s8962-ek/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s8962-ek/nx/Make.defs b/configs/lm3s8962-ek/nx/Make.defs
index 7d0d0aa55b..5c2bab9154 100644
--- a/configs/lm3s8962-ek/nx/Make.defs
+++ b/configs/lm3s8962-ek/nx/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lm3s8962-ek/ostest/Make.defs b/configs/lm3s8962-ek/ostest/Make.defs
index 50368f34f2..19b7fef1d1 100644
--- a/configs/lm3s8962-ek/ostest/Make.defs
+++ b/configs/lm3s8962-ek/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpc4330-xplorer/nsh/Make.defs b/configs/lpc4330-xplorer/nsh/Make.defs
index 51439ac227..49fc903aa1 100644
--- a/configs/lpc4330-xplorer/nsh/Make.defs
+++ b/configs/lpc4330-xplorer/nsh/Make.defs
@@ -153,7 +153,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpc4330-xplorer/ostest/Make.defs b/configs/lpc4330-xplorer/ostest/Make.defs
index 51439ac227..49fc903aa1 100644
--- a/configs/lpc4330-xplorer/ostest/Make.defs
+++ b/configs/lpc4330-xplorer/ostest/Make.defs
@@ -153,7 +153,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/dhcpd/Make.defs b/configs/lpcxpresso-lpc1768/dhcpd/Make.defs
index eebe11c22a..5c7bd715eb 100644
--- a/configs/lpcxpresso-lpc1768/dhcpd/Make.defs
+++ b/configs/lpcxpresso-lpc1768/dhcpd/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/nsh/Make.defs b/configs/lpcxpresso-lpc1768/nsh/Make.defs
index c8fb0e9aec..020006de32 100644
--- a/configs/lpcxpresso-lpc1768/nsh/Make.defs
+++ b/configs/lpcxpresso-lpc1768/nsh/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/nx/Make.defs b/configs/lpcxpresso-lpc1768/nx/Make.defs
index b0334ba46d..79390242bb 100644
--- a/configs/lpcxpresso-lpc1768/nx/Make.defs
+++ b/configs/lpcxpresso-lpc1768/nx/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/ostest/Make.defs b/configs/lpcxpresso-lpc1768/ostest/Make.defs
index 1e1f2d9795..5a99725c07 100644
--- a/configs/lpcxpresso-lpc1768/ostest/Make.defs
+++ b/configs/lpcxpresso-lpc1768/ostest/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/thttpd/Make.defs b/configs/lpcxpresso-lpc1768/thttpd/Make.defs
index 93bcfa376e..9fe82fe83a 100644
--- a/configs/lpcxpresso-lpc1768/thttpd/Make.defs
+++ b/configs/lpcxpresso-lpc1768/thttpd/Make.defs
@@ -113,7 +113,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/lpcxpresso-lpc1768/usbstorage/Make.defs b/configs/lpcxpresso-lpc1768/usbstorage/Make.defs
index e546666e75..a42b8e84a6 100644
--- a/configs/lpcxpresso-lpc1768/usbstorage/Make.defs
+++ b/configs/lpcxpresso-lpc1768/usbstorage/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/m68332evb/Make.defs b/configs/m68332evb/Make.defs
index fb85cf8272..6f6ae7ad07 100644
--- a/configs/m68332evb/Make.defs
+++ b/configs/m68332evb/Make.defs
@@ -36,7 +36,7 @@
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -68,7 +68,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/mbed/hidkbd/Make.defs b/configs/mbed/hidkbd/Make.defs
index 92c6c7ceaa..b11b33d6d3 100644
--- a/configs/mbed/hidkbd/Make.defs
+++ b/configs/mbed/hidkbd/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mbed/nsh/Make.defs b/configs/mbed/nsh/Make.defs
index 9a72736d26..a7bc14423f 100644
--- a/configs/mbed/nsh/Make.defs
+++ b/configs/mbed/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mcu123-lpc214x/composite/Make.defs b/configs/mcu123-lpc214x/composite/Make.defs
index 7b9b8f22ff..28dbf31579 100644
--- a/configs/mcu123-lpc214x/composite/Make.defs
+++ b/configs/mcu123-lpc214x/composite/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mcu123-lpc214x/nsh/Make.defs b/configs/mcu123-lpc214x/nsh/Make.defs
index ddccbb4734..d9ae7e305a 100644
--- a/configs/mcu123-lpc214x/nsh/Make.defs
+++ b/configs/mcu123-lpc214x/nsh/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mcu123-lpc214x/ostest/Make.defs b/configs/mcu123-lpc214x/ostest/Make.defs
index 255515a42e..76b9e7abb0 100644
--- a/configs/mcu123-lpc214x/ostest/Make.defs
+++ b/configs/mcu123-lpc214x/ostest/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mcu123-lpc214x/usbserial/Make.defs b/configs/mcu123-lpc214x/usbserial/Make.defs
index 6f05d79f73..5490d690f8 100644
--- a/configs/mcu123-lpc214x/usbserial/Make.defs
+++ b/configs/mcu123-lpc214x/usbserial/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mcu123-lpc214x/usbstorage/Make.defs b/configs/mcu123-lpc214x/usbstorage/Make.defs
index 35ea7af7ab..408d19c234 100644
--- a/configs/mcu123-lpc214x/usbstorage/Make.defs
+++ b/configs/mcu123-lpc214x/usbstorage/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/micropendous3/hello/Make.defs b/configs/micropendous3/hello/Make.defs
index bd48d79c9e..69073bb438 100644
--- a/configs/micropendous3/hello/Make.defs
+++ b/configs/micropendous3/hello/Make.defs
@@ -88,7 +88,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mirtoo/nsh/Make.defs b/configs/mirtoo/nsh/Make.defs
index de0a190f66..28ea99ab04 100644
--- a/configs/mirtoo/nsh/Make.defs
+++ b/configs/mirtoo/nsh/Make.defs
@@ -134,7 +134,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mirtoo/nxffs/Make.defs b/configs/mirtoo/nxffs/Make.defs
index a6992ee533..09989324e5 100644
--- a/configs/mirtoo/nxffs/Make.defs
+++ b/configs/mirtoo/nxffs/Make.defs
@@ -134,7 +134,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mirtoo/ostest/Make.defs b/configs/mirtoo/ostest/Make.defs
index 71bd9d5baa..7a087665b9 100644
--- a/configs/mirtoo/ostest/Make.defs
+++ b/configs/mirtoo/ostest/Make.defs
@@ -134,7 +134,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/mx1ads/ostest/Make.defs b/configs/mx1ads/ostest/Make.defs
index 9b9c61df8f..0e261775f4 100644
--- a/configs/mx1ads/ostest/Make.defs
+++ b/configs/mx1ads/ostest/Make.defs
@@ -54,7 +54,7 @@ ARCHCXXFLAGS		= -fno-builtin -fno-exceptions
 ARCHWARNINGS		= -Wall -Wstrict-prototypes -Wshadow
 ARCHWARNINGSXX		= -Wall -Wshadow
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -92,7 +92,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/ne64badge/ostest/Make.defs b/configs/ne64badge/ostest/Make.defs
index 2858d30f1d..870313d73f 100644
--- a/configs/ne64badge/ostest/Make.defs
+++ b/configs/ne64badge/ostest/Make.defs
@@ -84,7 +84,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/nettest/Make.defs b/configs/ntosd-dm320/nettest/Make.defs
index e28c1a3609..8c5b7e93b9 100644
--- a/configs/ntosd-dm320/nettest/Make.defs
+++ b/configs/ntosd-dm320/nettest/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/nsh/Make.defs b/configs/ntosd-dm320/nsh/Make.defs
index aff7f4240b..fa61494062 100644
--- a/configs/ntosd-dm320/nsh/Make.defs
+++ b/configs/ntosd-dm320/nsh/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/ostest/Make.defs b/configs/ntosd-dm320/ostest/Make.defs
index 6766b49153..9b2ab9e5e2 100644
--- a/configs/ntosd-dm320/ostest/Make.defs
+++ b/configs/ntosd-dm320/ostest/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/poll/Make.defs b/configs/ntosd-dm320/poll/Make.defs
index a111fed657..69c20da944 100644
--- a/configs/ntosd-dm320/poll/Make.defs
+++ b/configs/ntosd-dm320/poll/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/thttpd/Make.defs b/configs/ntosd-dm320/thttpd/Make.defs
index a0e501376e..252416f6bf 100644
--- a/configs/ntosd-dm320/thttpd/Make.defs
+++ b/configs/ntosd-dm320/thttpd/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/udp/Make.defs b/configs/ntosd-dm320/udp/Make.defs
index 16ed8ecebf..0cdb9f05dc 100644
--- a/configs/ntosd-dm320/udp/Make.defs
+++ b/configs/ntosd-dm320/udp/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ntosd-dm320/uip/Make.defs b/configs/ntosd-dm320/uip/Make.defs
index d9425c05eb..64bb4494b4 100644
--- a/configs/ntosd-dm320/uip/Make.defs
+++ b/configs/ntosd-dm320/uip/Make.defs
@@ -90,7 +90,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/nucleus2g/nsh/Make.defs b/configs/nucleus2g/nsh/Make.defs
index aed194e104..7b82800bfd 100644
--- a/configs/nucleus2g/nsh/Make.defs
+++ b/configs/nucleus2g/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/nucleus2g/ostest/Make.defs b/configs/nucleus2g/ostest/Make.defs
index 239424083b..b0ec211649 100644
--- a/configs/nucleus2g/ostest/Make.defs
+++ b/configs/nucleus2g/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/nucleus2g/usbserial/Make.defs b/configs/nucleus2g/usbserial/Make.defs
index 81f17e86d2..04e94eda90 100644
--- a/configs/nucleus2g/usbserial/Make.defs
+++ b/configs/nucleus2g/usbserial/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/nucleus2g/usbstorage/Make.defs b/configs/nucleus2g/usbstorage/Make.defs
index 06af74d397..3e15c52d04 100644
--- a/configs/nucleus2g/usbstorage/Make.defs
+++ b/configs/nucleus2g/usbstorage/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/ftpc/Make.defs b/configs/olimex-lpc1766stk/ftpc/Make.defs
index 674ad76929..91bd0e27cb 100644
--- a/configs/olimex-lpc1766stk/ftpc/Make.defs
+++ b/configs/olimex-lpc1766stk/ftpc/Make.defs
@@ -99,7 +99,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/hidkbd/Make.defs b/configs/olimex-lpc1766stk/hidkbd/Make.defs
index 3c68d370d0..c785dc7b7c 100644
--- a/configs/olimex-lpc1766stk/hidkbd/Make.defs
+++ b/configs/olimex-lpc1766stk/hidkbd/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/nettest/Make.defs b/configs/olimex-lpc1766stk/nettest/Make.defs
index 57f2b7a558..119acc0f69 100644
--- a/configs/olimex-lpc1766stk/nettest/Make.defs
+++ b/configs/olimex-lpc1766stk/nettest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/nsh/Make.defs b/configs/olimex-lpc1766stk/nsh/Make.defs
index c9ecf51db7..ea6ad5670b 100644
--- a/configs/olimex-lpc1766stk/nsh/Make.defs
+++ b/configs/olimex-lpc1766stk/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/nx/Make.defs b/configs/olimex-lpc1766stk/nx/Make.defs
index 64c9814925..67d74dcde1 100644
--- a/configs/olimex-lpc1766stk/nx/Make.defs
+++ b/configs/olimex-lpc1766stk/nx/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/ostest/Make.defs b/configs/olimex-lpc1766stk/ostest/Make.defs
index 2f33642bfc..78618bddbe 100644
--- a/configs/olimex-lpc1766stk/ostest/Make.defs
+++ b/configs/olimex-lpc1766stk/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/slip-httpd/Make.defs b/configs/olimex-lpc1766stk/slip-httpd/Make.defs
index fc49b69814..4f217561ff 100644
--- a/configs/olimex-lpc1766stk/slip-httpd/Make.defs
+++ b/configs/olimex-lpc1766stk/slip-httpd/Make.defs
@@ -99,7 +99,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/thttpd/Make.defs b/configs/olimex-lpc1766stk/thttpd/Make.defs
index bb4df618b2..e7095d9379 100644
--- a/configs/olimex-lpc1766stk/thttpd/Make.defs
+++ b/configs/olimex-lpc1766stk/thttpd/Make.defs
@@ -99,7 +99,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/usbserial/Make.defs b/configs/olimex-lpc1766stk/usbserial/Make.defs
index b4716971df..0ff4bb94af 100644
--- a/configs/olimex-lpc1766stk/usbserial/Make.defs
+++ b/configs/olimex-lpc1766stk/usbserial/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/usbstorage/Make.defs b/configs/olimex-lpc1766stk/usbstorage/Make.defs
index ed338c8b26..c7f954ff9a 100644
--- a/configs/olimex-lpc1766stk/usbstorage/Make.defs
+++ b/configs/olimex-lpc1766stk/usbstorage/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-lpc1766stk/wlan/Make.defs b/configs/olimex-lpc1766stk/wlan/Make.defs
index 08f55feab7..31f4023e6a 100644
--- a/configs/olimex-lpc1766stk/wlan/Make.defs
+++ b/configs/olimex-lpc1766stk/wlan/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-stm32-p107/nsh/Make.defs b/configs/olimex-stm32-p107/nsh/Make.defs
index 3314a82bef..f88fb67312 100644
--- a/configs/olimex-stm32-p107/nsh/Make.defs
+++ b/configs/olimex-stm32-p107/nsh/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-stm32-p107/ostest/Make.defs b/configs/olimex-stm32-p107/ostest/Make.defs
index fdceac03ba..2a1bc6d9cd 100644
--- a/configs/olimex-stm32-p107/ostest/Make.defs
+++ b/configs/olimex-stm32-p107/ostest/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-strp711/nettest/Make.defs b/configs/olimex-strp711/nettest/Make.defs
index 64259e9199..f14c078941 100644
--- a/configs/olimex-strp711/nettest/Make.defs
+++ b/configs/olimex-strp711/nettest/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-strp711/nsh/Make.defs b/configs/olimex-strp711/nsh/Make.defs
index 69c6b4c277..a16447aec3 100644
--- a/configs/olimex-strp711/nsh/Make.defs
+++ b/configs/olimex-strp711/nsh/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/olimex-strp711/ostest/Make.defs b/configs/olimex-strp711/ostest/Make.defs
index 722a45951e..a4fe11a027 100644
--- a/configs/olimex-strp711/ostest/Make.defs
+++ b/configs/olimex-strp711/ostest/Make.defs
@@ -80,7 +80,7 @@ else
   MAXOPTIMIZATION	= -O2
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pcblogic-pic32mx/nsh/Make.defs b/configs/pcblogic-pic32mx/nsh/Make.defs
index 9608ce0ee4..166378988e 100644
--- a/configs/pcblogic-pic32mx/nsh/Make.defs
+++ b/configs/pcblogic-pic32mx/nsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pcblogic-pic32mx/ostest/Make.defs b/configs/pcblogic-pic32mx/ostest/Make.defs
index 0376ee339f..834a8ed53e 100644
--- a/configs/pcblogic-pic32mx/ostest/Make.defs
+++ b/configs/pcblogic-pic32mx/ostest/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pic32-starterkit/nsh/Make.defs b/configs/pic32-starterkit/nsh/Make.defs
index 962801567f..1063e57bec 100644
--- a/configs/pic32-starterkit/nsh/Make.defs
+++ b/configs/pic32-starterkit/nsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pic32-starterkit/nsh2/Make.defs b/configs/pic32-starterkit/nsh2/Make.defs
index 2068db849d..730ec22b6f 100644
--- a/configs/pic32-starterkit/nsh2/Make.defs
+++ b/configs/pic32-starterkit/nsh2/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pic32-starterkit/ostest/Make.defs b/configs/pic32-starterkit/ostest/Make.defs
index 370ac7f1fb..d5eb4fb7f0 100644
--- a/configs/pic32-starterkit/ostest/Make.defs
+++ b/configs/pic32-starterkit/ostest/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pic32mx7mmb/nsh/Make.defs b/configs/pic32mx7mmb/nsh/Make.defs
index ed776bc191..249c359d4d 100644
--- a/configs/pic32mx7mmb/nsh/Make.defs
+++ b/configs/pic32mx7mmb/nsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pic32mx7mmb/ostest/Make.defs b/configs/pic32mx7mmb/ostest/Make.defs
index 54806fb95a..4196872a7f 100644
--- a/configs/pic32mx7mmb/ostest/Make.defs
+++ b/configs/pic32mx7mmb/ostest/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/pjrc-8051/Make.defs b/configs/pjrc-8051/Make.defs
index 5d25945479..5cf9fadf13 100644
--- a/configs/pjrc-8051/Make.defs
+++ b/configs/pjrc-8051/Make.defs
@@ -36,7 +36,7 @@
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= --debug
 else
   ARCHOPTIMIZATION	=
diff --git a/configs/qemu-i486/nsh/Make.defs b/configs/qemu-i486/nsh/Make.defs
index 8b5fe61f65..dd518a5afc 100644
--- a/configs/qemu-i486/nsh/Make.defs
+++ b/configs/qemu-i486/nsh/Make.defs
@@ -99,7 +99,7 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT = .elf
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
diff --git a/configs/qemu-i486/ostest/Make.defs b/configs/qemu-i486/ostest/Make.defs
index 0a2423456e..7bec9327bd 100644
--- a/configs/qemu-i486/ostest/Make.defs
+++ b/configs/qemu-i486/ostest/Make.defs
@@ -99,7 +99,7 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT = .elf
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
diff --git a/configs/sam3u-ek/knsh/Make.defs b/configs/sam3u-ek/knsh/Make.defs
index a402a4d512..b6275f283f 100644
--- a/configs/sam3u-ek/knsh/Make.defs
+++ b/configs/sam3u-ek/knsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sam3u-ek/nsh/Make.defs b/configs/sam3u-ek/nsh/Make.defs
index 337b98df84..f314f6765c 100644
--- a/configs/sam3u-ek/nsh/Make.defs
+++ b/configs/sam3u-ek/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sam3u-ek/nx/Make.defs b/configs/sam3u-ek/nx/Make.defs
index 86a1c5c38e..10ef94ff3f 100644
--- a/configs/sam3u-ek/nx/Make.defs
+++ b/configs/sam3u-ek/nx/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sam3u-ek/ostest/Make.defs b/configs/sam3u-ek/ostest/Make.defs
index 25f386df75..167b9217bf 100644
--- a/configs/sam3u-ek/ostest/Make.defs
+++ b/configs/sam3u-ek/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sam3u-ek/touchscreen/Make.defs b/configs/sam3u-ek/touchscreen/Make.defs
index fce80ec256..a1f1e71514 100644
--- a/configs/sam3u-ek/touchscreen/Make.defs
+++ b/configs/sam3u-ek/touchscreen/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/shenzhou/nsh/Make.defs b/configs/shenzhou/nsh/Make.defs
index 81dedb8bba..ef2bf35fb0 100644
--- a/configs/shenzhou/nsh/Make.defs
+++ b/configs/shenzhou/nsh/Make.defs
@@ -130,7 +130,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/shenzhou/nxwm/Make.defs b/configs/shenzhou/nxwm/Make.defs
index 84e0df782d..66e4945b12 100644
--- a/configs/shenzhou/nxwm/Make.defs
+++ b/configs/shenzhou/nxwm/Make.defs
@@ -130,7 +130,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/shenzhou/thttpd/Make.defs b/configs/shenzhou/thttpd/Make.defs
index 99aed6a514..8773aee1b3 100644
--- a/configs/shenzhou/thttpd/Make.defs
+++ b/configs/shenzhou/thttpd/Make.defs
@@ -133,7 +133,7 @@ LDNXFLAT = ldnxflat
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/skp16c26/ostest/Make.defs b/configs/skp16c26/ostest/Make.defs
index a7444daae3..7f1ab651a9 100644
--- a/configs/skp16c26/ostest/Make.defs
+++ b/configs/skp16c26/ostest/Make.defs
@@ -48,7 +48,7 @@ OBJDUMP			= $(CROSSDEV)objdump
 ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
@@ -70,7 +70,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/stm3210e-eval/RIDE/Make.defs b/configs/stm3210e-eval/RIDE/Make.defs
index 6e69590c7a..33c95f4cf3 100644
--- a/configs/stm3210e-eval/RIDE/Make.defs
+++ b/configs/stm3210e-eval/RIDE/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/buttons/Make.defs b/configs/stm3210e-eval/buttons/Make.defs
index 860d81c1fb..0ff9bef0cd 100644
--- a/configs/stm3210e-eval/buttons/Make.defs
+++ b/configs/stm3210e-eval/buttons/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/composite/Make.defs b/configs/stm3210e-eval/composite/Make.defs
index c0d85bf227..5c22eb8e43 100644
--- a/configs/stm3210e-eval/composite/Make.defs
+++ b/configs/stm3210e-eval/composite/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nsh/Make.defs b/configs/stm3210e-eval/nsh/Make.defs
index 03d19fbc80..348c721d13 100644
--- a/configs/stm3210e-eval/nsh/Make.defs
+++ b/configs/stm3210e-eval/nsh/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nsh2/Make.defs b/configs/stm3210e-eval/nsh2/Make.defs
index f84c115529..9cea646855 100644
--- a/configs/stm3210e-eval/nsh2/Make.defs
+++ b/configs/stm3210e-eval/nsh2/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nx/Make.defs b/configs/stm3210e-eval/nx/Make.defs
index 7f253873a1..b4f210369f 100644
--- a/configs/stm3210e-eval/nx/Make.defs
+++ b/configs/stm3210e-eval/nx/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nxconsole/Make.defs b/configs/stm3210e-eval/nxconsole/Make.defs
index 8993a53aab..bb51b10f91 100644
--- a/configs/stm3210e-eval/nxconsole/Make.defs
+++ b/configs/stm3210e-eval/nxconsole/Make.defs
@@ -110,7 +110,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nxlines/Make.defs b/configs/stm3210e-eval/nxlines/Make.defs
index 190ed098f8..9f1de2f93b 100644
--- a/configs/stm3210e-eval/nxlines/Make.defs
+++ b/configs/stm3210e-eval/nxlines/Make.defs
@@ -110,7 +110,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/nxtext/Make.defs b/configs/stm3210e-eval/nxtext/Make.defs
index d4f8ec2fe3..d977538864 100644
--- a/configs/stm3210e-eval/nxtext/Make.defs
+++ b/configs/stm3210e-eval/nxtext/Make.defs
@@ -110,7 +110,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/ostest/Make.defs b/configs/stm3210e-eval/ostest/Make.defs
index ef1a3d4234..ccb90fe273 100644
--- a/configs/stm3210e-eval/ostest/Make.defs
+++ b/configs/stm3210e-eval/ostest/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/pm/Make.defs b/configs/stm3210e-eval/pm/Make.defs
index a60e4a7745..b5e08c9a08 100644
--- a/configs/stm3210e-eval/pm/Make.defs
+++ b/configs/stm3210e-eval/pm/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/usbserial/Make.defs b/configs/stm3210e-eval/usbserial/Make.defs
index f08d5b68c4..9219e6099e 100644
--- a/configs/stm3210e-eval/usbserial/Make.defs
+++ b/configs/stm3210e-eval/usbserial/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3210e-eval/usbstorage/Make.defs b/configs/stm3210e-eval/usbstorage/Make.defs
index 7f2cb73b66..2c9e2a9e1b 100644
--- a/configs/stm3210e-eval/usbstorage/Make.defs
+++ b/configs/stm3210e-eval/usbstorage/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/dhcpd/Make.defs b/configs/stm3220g-eval/dhcpd/Make.defs
index e5a0e7b06a..71cb52eea6 100644
--- a/configs/stm3220g-eval/dhcpd/Make.defs
+++ b/configs/stm3220g-eval/dhcpd/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/nettest/Make.defs b/configs/stm3220g-eval/nettest/Make.defs
index 2a8976d089..de62c90567 100644
--- a/configs/stm3220g-eval/nettest/Make.defs
+++ b/configs/stm3220g-eval/nettest/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/nsh/Make.defs b/configs/stm3220g-eval/nsh/Make.defs
index 23a57ab800..fcb4bf93f7 100644
--- a/configs/stm3220g-eval/nsh/Make.defs
+++ b/configs/stm3220g-eval/nsh/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/nsh2/Make.defs b/configs/stm3220g-eval/nsh2/Make.defs
index 38335c1709..af4359dd8b 100644
--- a/configs/stm3220g-eval/nsh2/Make.defs
+++ b/configs/stm3220g-eval/nsh2/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/nxwm/Make.defs b/configs/stm3220g-eval/nxwm/Make.defs
index c4846c0c31..bb46adff7c 100644
--- a/configs/stm3220g-eval/nxwm/Make.defs
+++ b/configs/stm3220g-eval/nxwm/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/ostest/Make.defs b/configs/stm3220g-eval/ostest/Make.defs
index e2de89cf74..8e72558f94 100644
--- a/configs/stm3220g-eval/ostest/Make.defs
+++ b/configs/stm3220g-eval/ostest/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3220g-eval/telnetd/Make.defs b/configs/stm3220g-eval/telnetd/Make.defs
index 4004508d50..c82a2715a2 100644
--- a/configs/stm3220g-eval/telnetd/Make.defs
+++ b/configs/stm3220g-eval/telnetd/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/dhcpd/Make.defs b/configs/stm3240g-eval/dhcpd/Make.defs
index 5b1334a073..599ad69ec7 100644
--- a/configs/stm3240g-eval/dhcpd/Make.defs
+++ b/configs/stm3240g-eval/dhcpd/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/discover/Make.defs b/configs/stm3240g-eval/discover/Make.defs
index 58afd39038..37280e89b0 100644
--- a/configs/stm3240g-eval/discover/Make.defs
+++ b/configs/stm3240g-eval/discover/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/nettest/Make.defs b/configs/stm3240g-eval/nettest/Make.defs
index a7e4f9e077..b03eb2a3d4 100644
--- a/configs/stm3240g-eval/nettest/Make.defs
+++ b/configs/stm3240g-eval/nettest/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/nsh/Make.defs b/configs/stm3240g-eval/nsh/Make.defs
index d63876e754..a1587e4828 100644
--- a/configs/stm3240g-eval/nsh/Make.defs
+++ b/configs/stm3240g-eval/nsh/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/nsh2/Make.defs b/configs/stm3240g-eval/nsh2/Make.defs
index 16fef33447..9a2f75e73d 100644
--- a/configs/stm3240g-eval/nsh2/Make.defs
+++ b/configs/stm3240g-eval/nsh2/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/nxconsole/Make.defs b/configs/stm3240g-eval/nxconsole/Make.defs
index 20fabfc9d2..c822180f56 100644
--- a/configs/stm3240g-eval/nxconsole/Make.defs
+++ b/configs/stm3240g-eval/nxconsole/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/nxwm/Make.defs b/configs/stm3240g-eval/nxwm/Make.defs
index bf2da32464..edb007bd61 100644
--- a/configs/stm3240g-eval/nxwm/Make.defs
+++ b/configs/stm3240g-eval/nxwm/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/ostest/Make.defs b/configs/stm3240g-eval/ostest/Make.defs
index c984a7e85c..19c1c22640 100644
--- a/configs/stm3240g-eval/ostest/Make.defs
+++ b/configs/stm3240g-eval/ostest/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/telnetd/Make.defs b/configs/stm3240g-eval/telnetd/Make.defs
index 498ee33861..325d0fd97e 100644
--- a/configs/stm3240g-eval/telnetd/Make.defs
+++ b/configs/stm3240g-eval/telnetd/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/webserver/Make.defs b/configs/stm3240g-eval/webserver/Make.defs
index fb47d40050..d303a06fb0 100644
--- a/configs/stm3240g-eval/webserver/Make.defs
+++ b/configs/stm3240g-eval/webserver/Make.defs
@@ -131,7 +131,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm3240g-eval/xmlrpc/Make.defs b/configs/stm3240g-eval/xmlrpc/Make.defs
index 8f7fe96dc1..09e4b985b7 100644
--- a/configs/stm3240g-eval/xmlrpc/Make.defs
+++ b/configs/stm3240g-eval/xmlrpc/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f100rc_generic/nsh/Make.defs b/configs/stm32f100rc_generic/nsh/Make.defs
index 7d016a674e..76ab1751f8 100644
--- a/configs/stm32f100rc_generic/nsh/Make.defs
+++ b/configs/stm32f100rc_generic/nsh/Make.defs
@@ -105,7 +105,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f100rc_generic/ostest/Make.defs b/configs/stm32f100rc_generic/ostest/Make.defs
index 68d5410b34..2742e18cdf 100644
--- a/configs/stm32f100rc_generic/ostest/Make.defs
+++ b/configs/stm32f100rc_generic/ostest/Make.defs
@@ -105,7 +105,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/cxxtest/Make.defs b/configs/stm32f4discovery/cxxtest/Make.defs
index 004643950b..57254cc4af 100644
--- a/configs/stm32f4discovery/cxxtest/Make.defs
+++ b/configs/stm32f4discovery/cxxtest/Make.defs
@@ -138,7 +138,7 @@ else
   ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/elf/Make.defs b/configs/stm32f4discovery/elf/Make.defs
index 035a03e71a..e65571c68a 100644
--- a/configs/stm32f4discovery/elf/Make.defs
+++ b/configs/stm32f4discovery/elf/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/nsh/Make.defs b/configs/stm32f4discovery/nsh/Make.defs
index ed1662af5d..b3ccbbcc18 100644
--- a/configs/stm32f4discovery/nsh/Make.defs
+++ b/configs/stm32f4discovery/nsh/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/nxlines/Make.defs b/configs/stm32f4discovery/nxlines/Make.defs
index cfdb79a74a..b3d9337791 100644
--- a/configs/stm32f4discovery/nxlines/Make.defs
+++ b/configs/stm32f4discovery/nxlines/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/ostest/Make.defs b/configs/stm32f4discovery/ostest/Make.defs
index 3106143d6c..4527a9b223 100644
--- a/configs/stm32f4discovery/ostest/Make.defs
+++ b/configs/stm32f4discovery/ostest/Make.defs
@@ -128,7 +128,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/pm/Make.defs b/configs/stm32f4discovery/pm/Make.defs
index 3643548d47..e7276aa2ff 100644
--- a/configs/stm32f4discovery/pm/Make.defs
+++ b/configs/stm32f4discovery/pm/Make.defs
@@ -132,7 +132,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/stm32f4discovery/winbuild/Make.defs b/configs/stm32f4discovery/winbuild/Make.defs
index 6110b7bbd2..2d9e4f1e2a 100644
--- a/configs/stm32f4discovery/winbuild/Make.defs
+++ b/configs/stm32f4discovery/winbuild/Make.defs
@@ -97,7 +97,7 @@ OBJDUMP = $(CROSSDEV)objdump.exe
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sure-pic32mx/nsh/Make.defs b/configs/sure-pic32mx/nsh/Make.defs
index debf622d28..4aaf906ed8 100644
--- a/configs/sure-pic32mx/nsh/Make.defs
+++ b/configs/sure-pic32mx/nsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sure-pic32mx/ostest/Make.defs b/configs/sure-pic32mx/ostest/Make.defs
index 0c8d4346a5..cc25177391 100644
--- a/configs/sure-pic32mx/ostest/Make.defs
+++ b/configs/sure-pic32mx/ostest/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/sure-pic32mx/usbnsh/Make.defs b/configs/sure-pic32mx/usbnsh/Make.defs
index fa8d3700fa..fbb58949ba 100644
--- a/configs/sure-pic32mx/usbnsh/Make.defs
+++ b/configs/sure-pic32mx/usbnsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/teensy/hello/Make.defs b/configs/teensy/hello/Make.defs
index b79a52ed91..9c7cb8268f 100644
--- a/configs/teensy/hello/Make.defs
+++ b/configs/teensy/hello/Make.defs
@@ -88,7 +88,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/teensy/nsh/Make.defs b/configs/teensy/nsh/Make.defs
index 65838649cb..63c9db51f2 100644
--- a/configs/teensy/nsh/Make.defs
+++ b/configs/teensy/nsh/Make.defs
@@ -88,7 +88,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/teensy/usbstorage/Make.defs b/configs/teensy/usbstorage/Make.defs
index fa2997fb06..6474a772e1 100644
--- a/configs/teensy/usbstorage/Make.defs
+++ b/configs/teensy/usbstorage/Make.defs
@@ -88,7 +88,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/twr-k60n512/nsh/Make.defs b/configs/twr-k60n512/nsh/Make.defs
index a558cc0109..bb4a3f941c 100644
--- a/configs/twr-k60n512/nsh/Make.defs
+++ b/configs/twr-k60n512/nsh/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/twr-k60n512/ostest/Make.defs b/configs/twr-k60n512/ostest/Make.defs
index 6d49455215..cb7d962baa 100644
--- a/configs/twr-k60n512/ostest/Make.defs
+++ b/configs/twr-k60n512/ostest/Make.defs
@@ -96,7 +96,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ubw32/nsh/Make.defs b/configs/ubw32/nsh/Make.defs
index 07a966446f..0f034825a9 100644
--- a/configs/ubw32/nsh/Make.defs
+++ b/configs/ubw32/nsh/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/ubw32/ostest/Make.defs b/configs/ubw32/ostest/Make.defs
index 4f2971768d..143ab7b9c9 100644
--- a/configs/ubw32/ostest/Make.defs
+++ b/configs/ubw32/ostest/Make.defs
@@ -98,7 +98,7 @@ NM = $(CROSSDEV)nm
 OBJCOPY = $(CROSSDEV)objcopy
 OBJDUMP = $(CROSSDEV)objdump
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/us7032evb1/nsh/Make.defs b/configs/us7032evb1/nsh/Make.defs
index 9cbc41f5b9..fcda184774 100644
--- a/configs/us7032evb1/nsh/Make.defs
+++ b/configs/us7032evb1/nsh/Make.defs
@@ -36,7 +36,7 @@
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -68,7 +68,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/us7032evb1/ostest/Make.defs b/configs/us7032evb1/ostest/Make.defs
index 32f45eddab..379342a5d2 100644
--- a/configs/us7032evb1/ostest/Make.defs
+++ b/configs/us7032evb1/ostest/Make.defs
@@ -36,7 +36,7 @@
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -g
 else
   ARCHOPTIMIZATION	= -Os -fno-strict-aliasing -fno-strength-reduce \
@@ -68,7 +68,7 @@ OBJEXT			= .o
 LIBEXT			= .a
 EXEEXT			=
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
diff --git a/configs/vsn/nsh/Make.defs b/configs/vsn/nsh/Make.defs
index c6ab376dec..98ef2d94c4 100644
--- a/configs/vsn/nsh/Make.defs
+++ b/configs/vsn/nsh/Make.defs
@@ -108,7 +108,7 @@ OBJDUMP = $(CROSSDEV)objdump
 ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g
 else
   ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
diff --git a/configs/z16f2800100zcog/ostest/Make.defs b/configs/z16f2800100zcog/ostest/Make.defs
index 8589b5566a..e6b5ab4c69 100644
--- a/configs/z16f2800100zcog/ostest/Make.defs
+++ b/configs/z16f2800100zcog/ostest/Make.defs
@@ -73,7 +73,7 @@ EZDSZILOGINCDIR 	:= ${shell echo "$(WZDSZILOGINCDIR)" | sed -e "s/ /%20/g"}
 
 # Assembler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug
 else
   ARCHASMOPTIMIZATION	= -nodebug
@@ -89,7 +89,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -NOregvar -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -regvar
diff --git a/configs/z16f2800100zcog/pashello/Make.defs b/configs/z16f2800100zcog/pashello/Make.defs
index 3620ffcbe7..e06d1dc0bf 100644
--- a/configs/z16f2800100zcog/pashello/Make.defs
+++ b/configs/z16f2800100zcog/pashello/Make.defs
@@ -73,7 +73,7 @@ EZDSZILOGINCDIR 	:= ${shell echo "$(WZDSZILOGINCDIR)" | sed -e "s/ /%20/g"}
 
 # Assembler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug
 else
   ARCHASMOPTIMIZATION	= -nodebug
@@ -89,7 +89,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -NOregvar -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -regvar
diff --git a/configs/z8encore000zco/ostest/Make.defs b/configs/z8encore000zco/ostest/Make.defs
index 9e89220f8c..3991f68675 100644
--- a/configs/z8encore000zco/ostest/Make.defs
+++ b/configs/z8encore000zco/ostest/Make.defs
@@ -106,7 +106,7 @@ ARCHCPUDEF		= _Z8F6403
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -sdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -sdiopt
@@ -123,7 +123,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -NOregvar -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -regvar
diff --git a/configs/z8f64200100kit/ostest/Make.defs b/configs/z8f64200100kit/ostest/Make.defs
index 899f3955c7..5987934c3c 100644
--- a/configs/z8f64200100kit/ostest/Make.defs
+++ b/configs/z8f64200100kit/ostest/Make.defs
@@ -106,7 +106,7 @@ ARCHCPUDEF		= _Z8F6403
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHASMOPTIMIZATION	= -debug -sdiopt
 else
   ARCHASMOPTIMIZATION	= -nodebug -sdiopt
@@ -123,7 +123,7 @@ AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 
 # Compiler definitions
 
-ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION	= -debug -NOregvar -reduceopt
 else
   ARCHOPTIMIZATION	= -nodebug -regvar