[Buildroot] ARM softfloat - revisited
vano
ivan.kuten at promwad.com
Tue Sep 25 14:29:01 UTC 2007
Ulf Samuelsson wrote:
> ---------------------------------------------------------------------------
> If I check the STAGING_DIR, I see that
>
> <buildroot>/build_arm_wchar/staging_dir/usr/lib/gcc/arm-linux-uclibc/4.2.1/libgcc.a
> seems to contain the neccessary files, but the linking of libc/libc_so.a
> does not seem to take into account this files.
> I tried adding LDFLAGS+=-lgcc but this does not help.
> The I added the gcc/config/soft-fp source files from gcc-4.2.1
> and this allows the compile to continue, but it seems to be strange
> that this should be required.
>
> Any ideas?
>
> Best Regards
> Ulf Samuelsson
>
Hi Ulf,
I tried softfloat about one week ago but without success.
I tried this patch to 4.2.1 , build goes a bit further but fails too.
diff -urN gcc-3.4.1-old/gcc/config/arm/t-linux
gcc-3.4.1/gcc/config/arm/t-linux
--- gcc-3.4.1-old/gcc/config/arm/t-linux 2003-09-20
16:09:07.000000000 -0500
+++ gcc-3.4.1/gcc/config/arm/t-linux 2004-09-02 21:51:15.000000000 -0500
@@ -4,7 +4,10 @@
LIBGCC2_DEBUG_CFLAGS = -g0
LIB1ASMSRC = arm/lib1funcs.asm
-LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx
+LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx \
+ _negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi
_fixunsdfsi \
+ _truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \
+ _fixsfsi _fixunssfsi
# MULTILIB_OPTIONS = mhard-float/msoft-float
# MULTILIB_DIRNAMES = hard-float soft-float
I'll try your proposed approach.
Best regards,
Ivan
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