The LINK_SPEC for linux gets overwritten by linux-eabi.h which means the value of TARGET_FIX_V4BX_SPEC gets lost and as a result the option is not passed to linker when chosing march=armv4 This patch redefines this in linux-eabi.h and reinserts it for eabi defaulting toolchains. We might want to send it upstream -Khem Index: gcc-4.4.1/gcc/config/arm/linux-eabi.h =================================================================== --- gcc-4.4.1.orig/gcc/config/arm/linux-eabi.h 2009-10-09 12:25:06.142471730 -0700 +++ gcc-4.4.1/gcc/config/arm/linux-eabi.h 2009-10-09 12:28:57.564946305 -0700 @@ -63,10 +63,13 @@ #undef GLIBC_DYNAMIC_LINKER #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3" +#undef TARGET_FIX_V4BX_SPEC +#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4:--fix-v4bx}" + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to use the GNU/Linux version, not the generic BPABI version. */ #undef LINK_SPEC -#define LINK_SPEC LINUX_TARGET_LINK_SPEC +#define LINK_SPEC LINUX_TARGET_LINK_SPEC TARGET_FIX_V4BX_SPEC /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we do not use -lfloat. */