https://llvm.org/bugs/show_bug.cgi?id=26054
Bug ID: 26054
Summary: Race condition in compiler-rt cmake build
Product: compiler-rt
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: compiler-rt
Assignee: unassignedb...@nondot.org
Reporter: hjl.to...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
On machine with 24 cores,
cmake --build build-x86_64-linux-gnux32 -- -j 12
may lead to
/usr/local/bin/ld:/export/build/gnu/llvm-clang-x32-bootstrap-cmake/stage2/build-x86_64-linux-gnux32/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-x32.vers:1:
syntax error in VERSION script
clang-3.8: error: linker command failed with exit code 1 (use -v to see
invocation)
projects/compiler-rt/lib/asan/CMakeFiles/clang_rt.asan-dynamic-x32.dir/build.make:224:
recipe for target 'lib/clang/3.8.0/lib/linux/libclang_rt.asan-x32.so' failed
gmake[5]: *** [lib/clang/3.8.0/lib/linux/libclang_rt.asan-x32.so] Error 1
libclang_rt.asan-x32.so was built while clang_rt.asan-dynamic-x32.vers
was being generated. As the result, linker read the partially
written clang_rt.asan-dynamic-x32.vers.
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