[Bug 219524] devel/libunwind: ld: annot preempt symbol '_Ux86_64_init_local'

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219524

            Bug ID: 219524
           Summary: devel/libunwind: ld: annot preempt symbol
                    '_Ux86_64_init_local'
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: danilo at FreeBSD.org
          Reporter: ohartmann at walstatt.org
          Assignee: danilo at FreeBSD.org
             Flags: maintainer-feedback?(danilo at FreeBSD.org)

On recent CURRENT (12.0-CURRENT #0 r318861: Thu May 25 10:54:04 CEST 2017
amd64, with setting WITH_LLD_IS_LD=YES), the port bails out and fails to
compile, see below. After ino64 has been introduced, I'd like to recompile
everything necessary for xorg (portmaster -f), but the port fails to build.


libtool: link: cc -O2 -pipe -O3 -fstack-protector -fno-strict-aliasing
-fexceptions -Wall -Wsign-compare -fstack-protector -o .libs/Gperf-simple
Gperf-simple.o  ../src/.libs/libunwind-x86_64.so
/usr/ports/devel/libunwind/work/libunwind-1.2/src/.libs/libunwind.so
../src/.libs/libunwind.so -lgcc_s -llzma -Wl,-rpath -Wl,/usr/local/lib
--- mapper ---
libtool: link: cc -O2 -pipe -O3 -fstack-protector -fno-strict-aliasing
-fexceptions -Wall -Wsign-compare -fstack-protector -o mapper mapper.o 
--- Gperf-simple ---
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_init_local' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_init_local' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_local_addr_space' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_set_caching_policy' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_local_addr_space' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_set_caching_policy' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_local_addr_space' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function main): cannot preempt symbol
'_Ux86_64_set_caching_policy' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function measure_unwind): cannot preempt
symbol '_Ux86_64_init_local' defined in ../src/.libs/libunwind-x86_64.so
/usr/bin/ld: error: Gperf-simple.c:(function measure_unwind): cannot preempt
symbol '_Ux86_64_step' defined in ../src/.libs/libunwind-x86_64.so
cc: error: linker command failed with exit code 1 (use -v to see invocation)
*** [Gperf-simple] Error code 1

make[2]: stopped in /usr/ports/devel/libunwind/work/libunwind-1.2/tests
3 errors

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