https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
--- Comment #11 from Waldemar Brodkorb <wbx at openadk dot org> --- I talking about following change: diff -Nur gcc.orig/libgcc/config.host gcc/libgcc/config.host --- gcc.orig/libgcc/config.host 2016-02-26 21:02:28.000000000 +0100 +++ gcc/libgcc/config.host 2016-04-29 09:18:40.377989160 +0200 @@ -812,7 +812,7 @@ m68k*-*-openbsd*) ;; m68k-*-uclinux*) # Motorola m68k/ColdFire running uClinux with uClibc - tmake_file="$tmake_file m68k/t-floatlib m68k/t-linux" + tmake_file="$tmake_file m68k/t-floatlib" md_unwind_header=m68k/linux-unwind.h ;; m68k-*-linux*) # Motorola m68k's running GNU/Linux This would allow to create a working toolchain. m68k-nommu (coldfire) is only supported by uClibc-ng and not GNU libc. There is only support for Linuxthreads, so TLS/libatomic is disabled at configure time. C++ support still seems to work fine. The m68k (full MMU) support isn't changed with this patch. >From the embedded build system maintainer view, I think the patch is fine to at least get some working toolchain until the ICE is solved. The patch is used for some time in Buildroot/OpenADK.