https://llvm.org/bugs/show_bug.cgi?id=24182
Bug ID: 24182
Summary: (mingw) clang should implicitly link pthread when the
underlying gcc is configured with
--enable-threads=posix
Product: clang
Version: 3.7
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
$ cat test.cpp
#include <thread>
void test(){}
int main() {
std::thread t(test);
}
$ i686-w64-mingw32-g++ test.cpp -std=c++11
# Works.
$ clang++ -target i686-w64-mingw32 -fno-exceptions -std=c++11 test.cpp
/tmp/test-d91737.o:(.text+0x60): undefined reference to `pthread_equal'
clang-3.7: error: linker command failed with exit code 1 (use -v to see
invocation)
I know this is not easy to solve, but I think one possible solution could be to
have clang to check for <sysroot>/usr/lib/lib[win]pthread[.dll].a and then only
link against pthread when that file is found.
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