opencilk / cilkrts Goto Github PK

I have download and built OpenCilk/cilkrts from source. I have exported ~/cilk/cilkrts/build/install/lib to LD_LIBRARY_PATH but I still get /usr/bin/ld: cannot find -lcilkrts when compiling one of you applications with the Tapir-LLVM compiler.

What am I missing here?

Hi! I've hit problems trying to build cilkrts on Arch Linux, using Tapir-LLVM as a Cilk compiler. Linking fails with the following message:

/home/guatto/src/Tapir-Meta/tapir/build/bin/clang++` -fPIC -DIN_CILK_RUNTIME=1 -fPIC -Wall -DHAVE_ALLOCA_H -DHAVE_ATTRIBUTE_VISIBILITY -DHAVE_PTHREAD_AFFINITY_NP -DDONT_USE_CPU_ALLOC_SIZE -D_GNU_SOURCE -D_FORTIFY_SOURCE=2 -D__need_wchar_t -D__need_size_t -std=c++98 -O3 -DNDEBUG -Wl,--version-script,/home/guatto/pro/cilkrts/runtime/gnu-symbols.ver -Wl,-z,noexecstack -Wl,-z,now -ldl -Wl,-z,relro --rtlib=compiler-rt -shared -Wl,-soname,libcilkrts.so.5 -o libcilkrts.so.5 CMakeFiles/cilkrts.dir/runtime/bug.cpp.o CMakeFiles/cilkrts.dir/runtime/cilk-abi.c.o CMakeFiles/cilkrts.dir/runtime/cilk-abi-cilk-for.cpp.o CMakeFiles/cilkrts.dir/runtime/cilk-abi-vla-internal.c.o CMakeFiles/cilkrts.dir/runtime/cilk_api.c.o CMakeFiles/cilkrts.dir/runtime/cilk_fiber.cpp.o CMakeFiles/cilkrts.dir/runtime/cilk_malloc.c.o CMakeFiles/cilkrts.dir/runtime/c_reducers.c.o CMakeFiles/cilkrts.dir/runtime/frame_malloc.c.o CMakeFiles/cilkrts.dir/runtime/full_frame.c.o CMakeFiles/cilkrts.dir/runtime/global_state.cpp.o CMakeFiles/cilkrts.dir/runtime/jmpbuf.c.o CMakeFiles/cilkrts.dir/runtime/local_state.c.o CMakeFiles/cilkrts.dir/runtime/metacall_impl.c.o CMakeFiles/cilkrts.dir/runtime/pedigrees.c.o CMakeFiles/cilkrts.dir/runtime/record-replay.cpp.o CMakeFiles/cilkrts.dir/runtime/reducer_impl.cpp.o CMakeFiles/cilkrts.dir/runtime/scheduler.c.o CMakeFiles/cilkrts.dir/runtime/signal_node.c.o CMakeFiles/cilkrts.dir/runtime/spin_mutex.c.o CMakeFiles/cilkrts.dir/runtime/stats.c.o CMakeFiles/cilkrts.dir/runtime/worker_mutex.c.o CMakeFiles/cilkrts.dir/runtime/config/x86/cilk-abi-vla.c.o CMakeFiles/cilkrts.dir/runtime/cilk_fiber-unix.cpp.o CMakeFiles/cilkrts.dir/runtime/except-gcc.cpp.o CMakeFiles/cilkrts.dir/runtime/os_mutex-unix.c.o CMakeFiles/cilkrts.dir/runtime/os-unix.c.o CMakeFiles/cilkrts.dir/runtime/sysdep-unix.c.o CMakeFiles/cilkrts.dir/runtime/config/x86/os-unix-sysdep.c.o CMakeFiles/cilkrts.dir/runtime/sslib/ignore_handler_s.c.o CMakeFiles/cilkrts.dir/runtime/sslib/safe_str_constraint.c.o CMakeFiles/cilkrts.dir/runtime/sslib/snprintf_support.c.o CMakeFiles/cilkrts.dir/runtime/sslib/strcpy_s.c.o CMakeFiles/cilkrts.dir/runtime/sslib/strncpy_s.c.o CMakeFiles/cilkrts.dir/runtime/sslib/strnlen_s.c.o -lpthread /usr/bin/ld: CMakeFiles/cilkrts.dir/runtime/cilk-abi.c.o: relocation R_X86_64_PC32 against protected symbol `__cilkrts_get_tls_worker' can not be used when making a shared object /usr/bin/ld: final link failed: bad value

logs_failure.txt

I don't really understand what's going on, but the problem seems to be related to protected symbols. Not making the symbols protected seems to fix the issue, and can be achieved by patching CMakeLists.txt.

patch.txt

Hi there! Unsure if this is the right place to file this, but reducer_vector.h is missing from libcilkrts5 on Ubuntu Xenial. On the latest xenial version of the lib (5.4.0-6ubuntu1~16.04.11), all but vector reducer headers are available:
https://packages.ubuntu.com/xenial-updates/amd64/libgcc-5-dev/filelist

Perhaps the cilk install instructions at http://cilk.mit.edu/ could be updated to reflect that reducer_vector.h is missing on the latest package for some platforms? And maybe provide libcilkrts5 in the tapir toolchain ppa listed at cilk.mit.edu.

Thanks!
Joana