arm-elf float-abi defaults...

DJ Delorie dj@redhat.com
Tue May 11 21:41:00 GMT 2010


I discovered that if you build a plain arm-elf toolchain, the default
float-abis for gcc and gas don't match.  I added this patch locally to
make it "just work" but it seems to me it would be better to have the
defaults match, although I'm not sure how to enforce that.  Comments?
Suggestions?

Index: gcc/config/arm/elf.h
===================================================================
RCS file: gcc/config/arm/elf.h,v
--- gcc/config/arm/elf.h
+++ gcc/config/arm/elf.h
@@ -41,7 +41,13 @@
 #endif
 
 #ifndef SUBTARGET_EXTRA_ASM_SPEC
-#define SUBTARGET_EXTRA_ASM_SPEC ""
+#if TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT
+#define SUBTARGET_EXTRA_ASM_SPEC \
+  "%{!msoft-float:%{!mhard-float:%{!mfloat-abi=*:-mfloat-abi=soft}}}"
+#else
+#define SUBTARGET_EXTRA_ASM_SPEC \
+  "%{!msoft-float:%{!mhard-float:%{!mfloat-abi=*:-mfloat-abi=hard}}}"
+#endif
 #endif
 
 #ifndef SUBTARGET_ASM_FLOAT_SPEC



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