Realizing I probably didn’t include some important information, but -fPIC is in fact being included in the compiler flags. For completeness, this is the command that is failing: /home/rolson/rpmbuild/BUILD/swift-source/build/buildbot_linux/llvm-linux-x86_64/./bin/clang++ -fPIC -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -O3 -DNDEBUG -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -Wl,-dT,/home/rolson/rpmbuild/BUILD/swift-source/.package_note-swift-lang-5.6-1.fc37.x86_64.ld -m64 -shared -Wl,-soname,libclang_rt.asan-x86_64.so -o /home/rolson/rpmbuild/BUILD/swift-source/build/buildbot_linux/llvm-linux-x86_64/lib/clang/13.0.0/lib/linux/libclang_rt.asan-x86_64.so 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lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_fake_stack.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_flags.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_fuchsia.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_globals.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_globals_win.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors_memintrinsics.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_linux.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_mac.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_linux.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_mac.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_win.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_memory_profile.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_poisoning.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_posix.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_premap_shadow.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_report.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_rtl.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_shadow_setup.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_stack.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_stats.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_suppressions.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_thread.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_win.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors_vfork.S.o lib/a san/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_new_delete.cpp.o lib/asan/CMakeFiles/RTAsan_dynamic_version_script_dummy.x86_64.dir/dummy.cpp.o lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_handlers_cxx.cpp.o lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash.cpp.o lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash_itanium.cpp.o lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash_win.cpp.o -lstdc++ -lgcc_s -lc -ldl -lrt -lm -lpthread -Wl,--allow-shlib-undefined On 9 Mar 2022, at 15:07, Ron Olson wrote: > Hey all- > > Building swiftlang on F36/Rawhide results in a a failure that, boiled down to its essence, appears to be: > > /usr/bin/ld: /tmp/lto-llvm-4fd0b1.o: relocation R_X86_64_PC32 against undefined symbol `__libc_stack_end' can not be used when making a shared object; recompile with -fPIC > > It compiles fine on 35 so I’m guessing glibc has been updated; a bunch of web searching hasn’t come up with any useful suggestions, the one ancient Bugzilla ticket I found was not resolved. > > Any suggestions on what to do about this? > > Thanks! > > Ron _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe 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