CMakeError.log

CMakeError.log (text/plain), 2.53 KB, created by Toralf Förster on 2020-10-11 15:26:15 UTC

Performing C++ SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /var/tmp/portage/media-libs/zxing-cpp-1.1.1/work/zxing-cpp-1.1.1_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_8d4d2 && [1/2] Building CXX object CMakeFiles/cmTC_8d4d2.dir/src.cxx.o
[2/2] Linking CXX executable cmTC_8d4d2
FAILED: cmTC_8d4d2 
: && /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color  -Wformat -Werror=format-security -DCMAKE_HAVE_LIBC_PTHREAD -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0 CMakeFiles/cmTC_8d4d2.dir/src.cxx.o -o cmTC_8d4d2   && :
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: CMakeFiles/cmTC_8d4d2.dir/src.cxx.o: in function `main':
src.cxx:(.text.startup+0x25): undefined reference to `pthread_create'
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: src.cxx:(.text.startup+0x2e): undefined reference to `pthread_detach'
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: src.cxx:(.text.startup+0x37): undefined reference to `pthread_cancel'
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: src.cxx:(.text.startup+0x42): undefined reference to `pthread_join'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.


Source file was:
#include <pthread.h>

void* test_func(void* data)
{
  return data;
}

int main(void)
{
  pthread_t thread;
  pthread_create(&thread, NULL, test_func, NULL);
  pthread_detach(thread);
  pthread_cancel(thread);
  pthread_join(thread, NULL);
  pthread_atfork(NULL, NULL, NULL);
  pthread_exit(NULL);

  return 0;
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /var/tmp/portage/media-libs/zxing-cpp-1.1.1/work/zxing-cpp-1.1.1_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_7a768 && [1/2] Building CXX object CMakeFiles/cmTC_7a768.dir/CheckFunctionExists.cxx.o
[2/2] Linking CXX executable cmTC_7a768
FAILED: cmTC_7a768 
: && /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color  -Wformat -Werror=format-security -DCHECK_FUNCTION_EXISTS=pthread_create -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0 CMakeFiles/cmTC_7a768.dir/CheckFunctionExists.cxx.o -o cmTC_7a768  -lpthreads && :
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.