2011/4/4 Andrew Bradford <[email protected]> > On Fri, Apr 1, 2011 at 11:18 AM, Angel Ivan Castell Rovira > <[email protected]> wrote: > > 2011/4/1 Andrew Bradford <[email protected]> > >> > >> I found some patches that might help, one from OpenWRT relating to arm > >> uClibc softfloat on GCC 4.5.1: > >> > >> > https://dev.openwrt.org/browser/trunk/toolchain/gcc/patches/4.5.1/810-arm-softfloat-libgcc.patch?rev=22450 > >> > >> Another that looks basically the same from a developer on BusyBox but > >> is listed for GCC 4.4.2: > >> http://busybox.net/~aldot/gcc/4.4.2/810-arm-softfloat-libgcc.patch > > > > Both patches seem to be the same. I have tested the one from "openwrt" > with > > gcc 4.5.2, and the issues reported yesterday at this forum seems to > > reproduce exactly the same problem. > > Ivan, > > I've got uClibc to build for armv4t soft float. The patch I've used > for gcc-4.5.2 looks a lot like the two I pointed out above. I've put > it at the end of this email and included a link below. I got it from > the buildroot 2011.02 release. Apply to gcc before configuring > gcc-static in the gcc-4.5.2 directory (not the gcc-build directory): > > patch -Np1 -i /path/to/810-arm-softfloat-libgcc.patch > > Patch online here: > > http://git.buildroot.net/buildroot/tree/toolchain/gcc/4.5.2/810-arm-softfloat-libgcc.patch > > Don't worry about the 4.4.0 version number, it'll apply and work fine. > The patch should fall under GPLv2 (that's what the buildroot page > says), just an FYI if you're distributing your tool chain binaries. > > I don't think the patch is needed when building gcc-final. > > If you are successful when using this patch, please let me know and > I'll work to include it in the CLFS embedded book. > > See if that helps. > -Andrew > > ************************************************************* > > [PATCH] add the correct symbols to libgcc for uclibc arm softfloat > > Signed-off-by: Peter Korsgaard <[email protected]> > --- > gcc/config/arm/linux-elf.h | 2 +- > gcc/config/arm/t-linux | 6 +++++- > 2 files changed, 6 insertions(+), 2 deletions(-) > > Index: gcc-4.4.0/gcc/config/arm/t-linux > =================================================================== > --- gcc-4.4.0.orig/gcc/config/arm/t-linux > +++ gcc-4.4.0/gcc/config/arm/t-linux > @@ -4,7 +4,11 @@ > > LIB1ASMSRC = arm/lib1funcs.asm > LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 > \ > - _arm_addsubdf3 _arm_addsubsf3 > + _arm_addsubdf3 _arm_addsubsf3 \ > + _arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \ > + _arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \ > + _arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \ > + _arm_fixsfsi _arm_fixunssfsi > > # MULTILIB_OPTIONS = mhard-float/msoft-float > # MULTILIB_DIRNAMES = hard-float soft-float > Index: gcc-4.4.0/gcc/config/arm/linux-elf.h > =================================================================== > --- gcc-4.4.0.orig/gcc/config/arm/linux-elf.h > +++ gcc-4.4.0/gcc/config/arm/linux-elf.h > @@ -60,7 +60,7 @@ > %{shared:-lc} \ > %{!shared:%{profile:-lc_p}%{!profile:-lc}}" > > -#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} > -lgcc" > +#define LIBGCC_SPEC "-lgcc" > > #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" > _______________________________________________ > Clfs-support mailing list > [email protected] > http://lists.cross-lfs.org/listinfo.cgi/clfs-support-cross-lfs.org >
Hello Mr. Andrew. Yes! That patch fixes this problem. I just have finished to build the complete cross-toolchain right now (also the gcc cross-compiler). I have obtained the same result using the second patch you told to me last Friday: http://busybox.net/~aldot/gcc/4.4.2/810-arm-softfloat-libgcc.patch I made the mistake to compare visually both patches, and both of them look exactly the same, but they are not equal, they have tiny but important differences... Unfortunately, I tested all the process with ''openwrt' patch, just the one it doesn't works (murphy's laws...). So, this issue can be closed as solved. I am really happy to obtain that working cross-toolchain from scratch. I deeply appreciate all your useful help. Thank you very much!! :-) Best regards, -- Ivan
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