The following message is displayed and fails to compile. $ ABI_X86="32 64" USE="libunwind" emerge sys-libs/libcxxrt <snip> >>> Compiling source in /var/tmp/portage/sys-libs/libcxxrt-0.0_p20150423-r1/work/libcxxrt-0.0_p20150423 ... * abi_x86_32.x86: running multilib-minimal_abi_src_compile <snip> x86_64-pc-linux-gnu-g++ -m32 -fPIC -nodefaultlibs -O2 -pipe -Wl,-O1 -Wl,--as-needed -Wl,-z,defs -shared -Wl,-soname,libcxxrt.so.1 -o libcxxrt.so.1 dynamic_cast.So exception.So guard.So stdexcept.So typeinfo.So memory.So auxhelper.So libelftc_dem_gnu3.So -ldl -lunwind -lc /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../libunwind.so when searching for -lunwind /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../libunwind.a when searching for -lunwind /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/libunwind.so when searching for -lunwind /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: skipping incompatible /usr/lib/libunwind.a when searching for -lunwind /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lunwind collect2: error: ld returned 1 exit status Makefile:20: recipe for target 'libcxxrt.so.1' failed make: *** [libcxxrt.so.1] Error 1 sys-libs/libunwind does not support ABI_X86. sys-libs/llvm-libunwind support ABI_X86, version 3.9.0 or later. I think it is better to change RDEPEND. $ ABI_X86="32 64" ACCEPT_KEYWORDS=~amd64 emerge -pv sys-libs/libunwind [ebuild N ] sys-libs/libunwind-1.2_rc1:7::gentoo USE="static-libs -debug -debug-frame -doc -libatomic -lzma" 1145 KiB $ ABI_X86="32 64" ACCEPT_KEYWORDS=~amd64 emerge -pv --nodeps sys-libs/llvm-libunwind [ebuild N #] sys-libs/llvm-libunwind-3.9.0::gentoo USE="static-libs -debug" ABI_X86="32 (64) (-x32)" 61 KiB
Created attachment 446046 [details, diff] sample patch for libcxxrt-{0.0_p20150423-r1,9999}.ebuild
merged, thx
