On 16 April 2017 at 04:10, Mark Millard <mar...@dsl-only.net> wrote: > Context: amd64 FreeBSD -r316952 as a VirtualBox guest > that was built using WITH_LLD_IS_LD= . ports -r438577. > > x11/xorg-minimal indirectly gets to devel/libunwind and > devel/libunwind fails to build from source: > > > --- Lperf-simple --- > libtool: link: cc -O2 -pipe -g -fstack-protector -fno-strict-aliasing > -fexceptions -Wall -Wsign-compare -fstack-protector -o .libs/Lperf-simple > Lperf-simple.o ../src/.libs/libunwind.so -lgcc -llzma -Wl,-rpath > -Wl,/usr/local/lib > /usr/bin/ld: error: ./Gperf-simple.c:195: cannot preempt symbol > '_ULx86_64_init_local' defined in ../src/.libs/libunwind.so
The LLD ports exp-run identified the "cannot preempt symbol" issue as being responsible for the largest number of failed or skipped ports. You can find a description of the issue in LLVM PR 30960 (https://bugs.llvm.org//show_bug.cgi?id=30960). This is a tricky issue, and one for which there's not a clear right answer, but is arguably a problem that needs to be addressed in the individual pieces of software (libunwind, openal-soft, etc.) As a temporary workaround you can add CFLAGS+= -fPIC to the port's Makefile, as in https://github.com/emaste/freebsd-ports/commit/4857444b31ca546e29e221dce2a41092765e6062 _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
