[Buildroot] gcc-4.1.2 eabi softfloat toolchain, undefined reference to "raise"

[Bernhard Fischer]

On Thu, Apr 26, 2007 at 10:02:59AM +0200, Konstantin Kletschke wrote:
>I have a toolcahin working quite well: gcc-4.1.2 binutils-2.17, generic
>arm softfloat supporting EABI. This works with kernel and userspace
>well. Only on u-boot it fails at the final stage:
>
>UNDEF_SYM=`arm-linux-objdump -x lib_generic/libgeneric.a board/scb9328/libscb9328.a cpu/arm920t/libarm920t.a cpu/arm920t/imx/libimx.a lib_arm/libarm.a fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/nand/libnand.a drivers/nand_legacy/libnand_legacy.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a |sed  -n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
>                cd /usr/src/u-boot/1.2.0 && arm-linux-ld -Bstatic -T /usr/src/u-boot/1.2.0/board/scb9328/u-boot.lds -Ttext 0x08f00000  $UNDEF_SYM cpu/arm920t/start.o \
>                        --start-group lib_generic/libgeneric.a board/scb9328/libscb9328.a cpu/arm920t/libarm920t.a cpu/arm920t/imx/libimx.a lib_arm/libarm.a fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/nand/libnand.a drivers/nand_legacy/libnand_legacy.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a --end-group -L /usr/local/arm/gcc-4.1.2/lib/gcc/arm-linux-uclibcgnueabi/4.1.2 -lgcc \
>                        -Map u-boot.map -o u-boot
>/usr/local/arm/gcc-4.1.2/lib/gcc/arm-linux-uclibcgnueabi/4.1.2/libgcc.a(_dvmd_lnx.o): In function `__div0':
>/usr/src/br/buildroot-20070206/toolchain_build_arm_nofpu/gcc-4.1.2-20070128/gcc/config/arm/lib1funcs.asm:1000: undefined reference to `raise'
>make: *** [u-boot] Error 1

This is a known bug with gcc. There is a bugfix (that i don't really
understand and consequently don't know if it is really accurate)
floating around for this one.

If in doubt, please file a PR in http://gcc.gnu.org/bugzilla/ about this bug
and perhaps add a pointer to the patch if this bug is not yet entered in
bugzilla.

TIA,
>
>Well, compiling u-boot works fine with another arch (pxa xscale), only my arm9 
>i.MX arch triggers a bug here. Does somebody have an advise or tip for
>me how to fix this?