From d656982f7a113762ac9c26c98dac697137a8a27a Mon Sep 17 00:00:00 2001
From: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Sat, 20 Mar 2021 05:16:50 +0800
Subject: [PATCH] build: Remove the null assignment

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
---
 Application.mk                           | 4 ----
 examples/bmi160/Makefile                 | 2 --
 examples/charger/Makefile                | 2 --
 examples/module/drivers/chardev/Makefile | 3 ---
 examples/sotest/lib/modprint/Makefile    | 3 ---
 examples/sotest/lib/sotest/Makefile      | 3 ---
 examples/udpblaster/udpblaster.h         | 2 +-
 examples/usbserial/Makefile.host         | 1 -
 modbus/rtu/Make.defs                     | 2 --
 9 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/Application.mk b/Application.mk
index d1dba9858..e6f8f6382 100644
--- a/Application.mk
+++ b/Application.mk
@@ -90,12 +90,8 @@ ifneq ($(BUILD_MODULE),y)
   OBJS += $(MAINCOBJ) $(MAINCXXOBJ)
 endif
 
-DEPPATH += --dep-path .
-DEPPATH += --obj-path .
 DEPPATH += --obj-suffix $(SUFFIX)$(OBJEXT)
 
-VPATH += :.
-
 # Targets follow
 
 all:: $(OBJS)
diff --git a/examples/bmi160/Makefile b/examples/bmi160/Makefile
index 45132d872..7fffef840 100644
--- a/examples/bmi160/Makefile
+++ b/examples/bmi160/Makefile
@@ -44,8 +44,6 @@ STACKSIZE = $(CONFIG_EXAMPLES_SIXAXIS_STACKSIZE)
 
 # sixaxis Example
 
-ASRCS =
-CSRCS =
 MAINSRC = sixaxis_main.c
 
 include $(APPDIR)/Application.mk
diff --git a/examples/charger/Makefile b/examples/charger/Makefile
index 052ea02ad..28f4e2364 100644
--- a/examples/charger/Makefile
+++ b/examples/charger/Makefile
@@ -6,8 +6,6 @@ PROGNAME = $(CONFIG_EXAMPLES_CHARGER_PROGNAME)
 PRIORITY = $(CONFIG_EXAMPLES_CHARGER_PRIORITY)
 STACKSIZE = $(CONFIG_EXAMPLES_CHARGER_STACKSIZE)
 
-ASRCS =
-CSRCS =
 MAINSRC = charger_main.c
 
 include $(APPDIR)/Application.mk
diff --git a/examples/module/drivers/chardev/Makefile b/examples/module/drivers/chardev/Makefile
index d6c965018..007e8a62e 100644
--- a/examples/module/drivers/chardev/Makefile
+++ b/examples/module/drivers/chardev/Makefile
@@ -37,9 +37,6 @@ include $(APPDIR)/Make.defs
 
 CMODULEFLAGS += $(KDEFINE)
 
-LDLIBPATH =
-LDLIBS =
-
 ifeq ($(CONFIG_EXAMPLES_MODULE_LIBGCC),y)
 LIBGCC = "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name 2>/dev/null}"
 ifneq ($(LIBGCC),)
diff --git a/examples/sotest/lib/modprint/Makefile b/examples/sotest/lib/modprint/Makefile
index c4d1d3254..431579713 100644
--- a/examples/sotest/lib/modprint/Makefile
+++ b/examples/sotest/lib/modprint/Makefile
@@ -35,9 +35,6 @@
 
 include $(APPDIR)/Make.defs
 
-LDLIBPATH =
-LDLIBS =
-
 ifeq ($(CONFIG_EXAMPLES_SOTEST_LIBGCC),y)
 LIBGCC = "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name 2>/dev/null}"
 ifneq ($(LIBGCC),)
diff --git a/examples/sotest/lib/sotest/Makefile b/examples/sotest/lib/sotest/Makefile
index 31e0208a6..b4fea74e4 100644
--- a/examples/sotest/lib/sotest/Makefile
+++ b/examples/sotest/lib/sotest/Makefile
@@ -35,9 +35,6 @@
 
 include $(APPDIR)/Make.defs
 
-LDLIBPATH =
-LDLIBS =
-
 ifeq ($(CONFIG_EXAMPLES_SOTEST_LIBGCC),y)
 LIBGCC = "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name 2>/dev/null}"
 ifneq ($(LIBGCC),)
diff --git a/examples/udpblaster/udpblaster.h b/examples/udpblaster/udpblaster.h
index 68012d44e..4c9cce667 100644
--- a/examples/udpblaster/udpblaster.h
+++ b/examples/udpblaster/udpblaster.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * examples/udpblaster/udpblaster.h
+ * apps/examples/udpblaster/udpblaster.h
  *
  *   Copyright (C) 2015, 2018 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
diff --git a/examples/usbserial/Makefile.host b/examples/usbserial/Makefile.host
index 1811741c5..f6234bca0 100644
--- a/examples/usbserial/Makefile.host
+++ b/examples/usbserial/Makefile.host
@@ -40,7 +40,6 @@ include $(APPDIR)/Make.defs
 SRC = host.c
 BIN = host$(HOSTEXEEXT)
 
-DEFINES =
 ifeq ($(CONFIG_EXAMPLES_USBSERIAL_INONLY),y)
 DEFINES += -DCONFIG_EXAMPLES_USBSERIAL_INONLY=1
 endif
diff --git a/modbus/rtu/Make.defs b/modbus/rtu/Make.defs
index b17aa4fdb..0c67b1806 100644
--- a/modbus/rtu/Make.defs
+++ b/modbus/rtu/Make.defs
@@ -33,8 +33,6 @@
 #
 ############################################################################
 
-compile_rtu=
-
 ifeq ($(CONFIG_MB_RTU_ENABLED),y)
 compile_rtu=yes
 endif