colcon build --symlink-install can't find '__main__' module; ld: cannot find -lpthreads

edit

On Fedora 32, ROS 10.1, following these instructions, running colcon build --symlink-install errors out with the below:

-- BUILD_SHARED_LIBS is on
/usr/local/bin/anaconda3/bin/python: can't find '__main__' module in '/usr/local/bin/anaconda3/lib/python3.7/site-packages/em'
CMake Error at cmake/safe_execute_process.cmake:11 (message):

  execute_process(/root/ros_catkin_ws/build/catkin/catkin_generated/env_cached.sh
  "/usr/local/bin/anaconda3/bin/python"
  "/usr/local/bin/anaconda3/lib/python3.7/site-packages/em" "--raw-errors"
  "-F"
  "/root/ros_catkin_ws/build/catkin/catkin_generated/pkg.develspace.context.pc.py"
  "-o" "/root/ros_catkin_ws/build/catkin/devel/lib/pkgconfig/catkin.pc"
  "/root/ros_catkin_ws/src/catkin/cmake/em/pkg.pc.em") returned error code 1
Call Stack (most recent call first):
  cmake/em_expand.cmake:25 (safe_execute_process)
  cmake/catkin_package.cmake:327 (em_expand)
  cmake/catkin_package.cmake:102 (_catkin_package)
  CMakeLists.txt:11 (catkin_package)

-- Configuring incomplete, errors occurred!
See also "/root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeOutput.log".
See also "/root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeError.log".
Failed   <<< catkin [0.82s, exited with code 1]

log file:

/usr/bin/ld: src.c:(.text+0x39): undefined reference to `pthread_detach'
/usr/bin/ld: src.c:(.text+0x45): undefined reference to `pthread_cancel'
/usr/bin/ld: src.c:(.text+0x56): undefined reference to `pthread_join'
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_210d5.dir/build.make:107: cmTC_210d5] Error 1
gmake[1]: Leaving directory '/root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:141: cmTC_210d5/fast] Error 2

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeTmp

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;
}

Run Build Command(s):/usr/bin/gmake cmTC_d2cba/fast && /usr/bin/gmake  -f CMakeFiles/cmTC_d2cba.dir/build.make CMakeFiles/cmTC_d2cba.dir/build
gmake[1]: Entering directory '/root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_d2cba.dir/CheckFunctionExists.c.o
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_d2cba.dir/CheckFunctionExists.c.o   -c /usr/share/cmake/Modules/CheckFunctionExists.c
Linking C executable cmTC_d2cba
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_d2cba.dir/link.txt --verbose=1
/usr/bin/cc  -DCHECK_FUNCTION_EXISTS=pthread_create    -rdynamic CMakeFiles/cmTC_d2cba.dir/CheckFunctionExists.c.o  -o cmTC_d2cba  -lpthreads
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
gmake[1]: *** [CMakeFiles/cmTC_d2cba.dir/build.make:107: cmTC_d2cba] Error 1
gmake[1]: Leaving directory '/root/ros_catkin_ws/build/catkin/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:141: cmTC_d2cba/fast] Error 2

Is this a known issue? Is there a work around for thepthreads? I also tried with -DBUILD_SHARED_LIBS=OFF no difference.

Edit: after adding setuptools and pytest-cov here are the errors:

Failed   <<< cyclonedds [0.56s, exited with code 1]


Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /root/ros2_dashing/build/cyclonedds/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_473c5/fast && /usr/bin/gmake  -f CMakeFiles ...