SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed

[regonsite]

ubuntu 20.04LTS While running 'cmake ../' command error shown below occurs:

Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_bc1fd/fast && /usr/bin/make -f CMakeFiles/cmTC_bc1fd.dir/build.make CMakeFiles/cmTC_bc1fd.dir/build make[1]: Entering directory '/home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_bc1fd.dir/src.c.o /usr/bin/cc -DCMAKE_HAVE_LIBC_PTHREAD -fPIE -o CMakeFiles/cmTC_bc1fd.dir/src.c.o -c /home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_bc1fd /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bc1fd.dir/link.txt --verbose=1 /usr/bin/cc -DCMAKE_HAVE_LIBC_PTHREAD -rdynamic CMakeFiles/cmTC_bc1fd.dir/src.c.o -o cmTC_bc1fd /usr/bin/ld: CMakeFiles/cmTC_bc1fd.dir/src.c.o: in function main': src.c:(.text+0x46): undefined reference topthread_create' /usr/bin/ld: src.c:(.text+0x52): undefined reference to pthread_detach' /usr/bin/ld: src.c:(.text+0x63): undefined reference topthread_join' collect2: error: ld returned 1 exit status make[1]: [CMakeFiles/cmTC_bc1fd.dir/build.make:87: cmTC_bc1fd] Error 1 make[1]: Leaving directory '/home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp' make: [Makefile:121: cmTC_bc1fd/fast] Error 2

Source file was:

include

void test_func(void data) { return data; }

int main(void) { pthread_t thread; pthread_create(&thread, NULL, test_func, NULL); pthread_detach(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: /home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_b4875/fast && /usr/bin/make -f CMakeFiles/cmTC_b4875.dir/build.make CMakeFiles/cmTC_b4875.dir/build make[1]: Entering directory '/home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_b4875.dir/CheckFunctionExists.c.o /usr/bin/cc -DCHECK_FUNCTION_EXISTS=pthread_create -fPIE -o CMakeFiles/cmTC_b4875.dir/CheckFunctionExists.c.o -c /usr/share/cmake-3.16/Modules/CheckFunctionExists.c Linking C executable cmTC_b4875 /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b4875.dir/link.txt --verbose=1 /usr/bin/cc -DCHECK_FUNCTION_EXISTS=pthread_create -rdynamic CMakeFiles/cmTC_b4875.dir/CheckFunctionExists.c.o -o cmTC_b4875 -lpthreads /usr/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[1]: [CMakeFiles/cmTC_b4875.dir/build.make:87: cmTC_b4875] Error 1 make[1]: Leaving directory '/home/r730xd/bls-signatures/build/CMakeFiles/CMakeTmp' make: [Makefile:121: cmTC_b4875/fast] Error 2

Does anyone faced with same problem? Tahnks!

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