From ffffb0121dbf54f491560c3539e6269e432517ae Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Wed, 22 Oct 2014 13:40:09 -0500
Subject: use thumb mode for cortex-m3 by default.
Fix error: r7 cannot be used in asm here by using -fomit-frame-pointer.
---
toolchain/gcc/Makefile | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
(limited to 'toolchain/gcc')
diff --git a/toolchain/gcc/Makefile b/toolchain/gcc/Makefile
index 110ef9d16..ccf0b4b69 100644
--- a/toolchain/gcc/Makefile
+++ b/toolchain/gcc/Makefile
@@ -135,7 +135,7 @@ GCC_CONFOPTS+= --with-cpu=arm1176jzf-s
endif
ifeq ($(ADK_CPU_CORTEX_M3),y)
-GCC_CONFOPTS+= --with-cpu=cortex-m3
+GCC_CONFOPTS+= --with-cpu=cortex-m3 --with-mode=thumb
endif
ifeq ($(ADK_CPU_CORTEX_A9),y)
@@ -194,8 +194,8 @@ endif
$(SED) '/k prot/agcc_cv_libc_provides_ssp=yes' $(WRKBUILD)/gcc/configure
cd $(GCC_BUILD_DIR_MINIMAL); \
PATH='$(TARGET_PATH)' \
- CFLAGS="-O0 -g0" \
- CXXFLAGS="-O0 -g0" \
+ CFLAGS="-O0 -g0 -fomit-frame-pointer" \
+ CXXFLAGS="-O0 -g0 -fomit-frame-pointer" \
$(WRKBUILD)/configure \
${GCC_CONFOPTS} \
--enable-languages=c \
@@ -216,8 +216,8 @@ $(GCC_BUILD_DIR_INITIAL)/.configured:
mkdir -p $(GCC_BUILD_DIR_INITIAL)
cd $(GCC_BUILD_DIR_INITIAL); \
PATH='$(TARGET_PATH)' \
- CFLAGS="-O0 -g0" \
- CXXFLAGS="-O0 -g0" \
+ CFLAGS="-O0 -g0 -fomit-frame-pointer" \
+ CXXFLAGS="-O0 -g0 -fomit-frame-pointer" \
$(WRKBUILD)/configure \
${GCC_CONFOPTS} \
${GCC_FINAL_CONFOPTS} \
--
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