From 23fe4e4c2a9be892071ac68ebbcd5ef7ff0a2939 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sun, 4 Nov 2012 20:29:04 +0000
Subject: [PATCH] Changes to get a clean build of apps/examples/cxxtest with
 the STM32 and uClibc++

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5310 42af7a65-404d-4744-a932-0658087f49c3
---
 configs/sim/cxxtest/Make.defs              |  2 +-
 configs/stm32f4discovery/README.txt        | 29 +++++++++++++++++++++-
 configs/stm32f4discovery/cxxtest/Make.defs |  2 +-
 configs/twr-k60n512/scripts/ld.script      |  2 +-
 4 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/configs/sim/cxxtest/Make.defs b/configs/sim/cxxtest/Make.defs
index 6f945cc519..9c7c3d46ba 100644
--- a/configs/sim/cxxtest/Make.defs
+++ b/configs/sim/cxxtest/Make.defs
@@ -93,7 +93,7 @@ LDLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(LD)
 CCLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(CC)
 LDFLAGS = $(ARCHSCRIPT) # For backward compatibility, same as CCLINKFLAGS
 
-LIBSUPXX = ${shell $(CC) --print-file-name=libsupc++.a}
+LIBSUPXX = ${shell $(CC) $(CXXFLAGS) --print-file-name=libsupc++.a}
 EXTRA_LIBPATHS = -L "${shell dirname "$(LIBSUPXX)"}"
 EXTRA_LIBS = -lsupc++
 
diff --git a/configs/stm32f4discovery/README.txt b/configs/stm32f4discovery/README.txt
index 730bf66ef2..02fdbb07a0 100644
--- a/configs/stm32f4discovery/README.txt
+++ b/configs/stm32f4discovery/README.txt
@@ -1008,7 +1008,34 @@ Where <subdir> is one of the following:
      b. Execute 'make menuconfig' in nuttx/ in order to start the
         reconfiguration process.
 
-  3. At present (2012/11/02), this example builds only with exceptions
+  3. Ideally, you should build with a toolchain based on GLIBC or
+     uClibc++.  It you use a toolchain based on newlib, you may see
+     an error like the following:
+
+     .../lib/libsupc++.a(vterminate.o): In function `__gnu_cxx::__verbose_terminate_handler()':
+     vterminate.cc:(....): undefined reference to `_impure_ptr'
+
+     Here is a quick'n'dirty fix:
+
+     1. Get the directory where you can find libsupc++:
+
+        arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -print-file-name=libsupc++.a
+
+     2. Go to that directory and save a copy of vterminate.o (in case you
+        want to restore it later:
+
+        cd <the-directory-containing-libsupc++.a>
+        arm-none-eabi-ar.exe -x libsupc++.a vterminate.o
+
+     3. Then remove vterminate.o from the library.  At build time, the
+        uClibc++ package will provide a usable replacement vterminate.o.
+
+     Now NuttX should link with no problem.  If you want to restore the
+     vterminate.o that you removed from libsupc++, you can do that with:
+
+       arm-none-eabi-ar.exe rcs libsupc++.a vterminate.o
+        
+  4. At present (2012/11/02), this example builds only with exceptions
      disabled (CONFIG_UCLIBCXX_EXCEPTIONS=n).
 
   elf:
diff --git a/configs/stm32f4discovery/cxxtest/Make.defs b/configs/stm32f4discovery/cxxtest/Make.defs
index f81d6ec2c1..004643950b 100644
--- a/configs/stm32f4discovery/cxxtest/Make.defs
+++ b/configs/stm32f4discovery/cxxtest/Make.defs
@@ -114,7 +114,7 @@ ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gc
 ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
 LDSCRIPT = ld.script
-LIBSUPXX = ${shell $(CC) --print-file-name=libsupc++.a}
+LIBSUPXX = ${shell $(CC) $(CXXFLAGS) --print-file-name=libsupc++.a}
 EXTRA_LIBPATHS = -L "${shell dirname "$(LIBSUPXX)"}"
 EXTRA_LIBS = -lsupc++
 
diff --git a/configs/twr-k60n512/scripts/ld.script b/configs/twr-k60n512/scripts/ld.script
index 26410e6d86..34f1527eb9 100644
--- a/configs/twr-k60n512/scripts/ld.script
+++ b/configs/twr-k60n512/scripts/ld.script
@@ -1,4 +1,4 @@
- /****************************************************************************
+/****************************************************************************
  * configs/twr-k60n512/scripts/ld.script
  *
  *   Copyright (C) 2011 Gregory Nutt. All rights reserved.