Created attachment 1667191 [details]
File to reproduce problem

Description of problem:
libatomic.a, libatomic.so is missing for gcc-toolset-9 (x86_64)

Version-Release number of selected component (if applicable):
gcc (GCC) 9.1.1 20190605 (Red Hat 9.1.1-2)

How reproducible:
Always.

Steps to Reproduce:
1. See attached file "atomic_test.cpp"
2. Try to compile with system-compiler: g++ atomic_test.cpp -latomic (works)
3. Try to compile with gcc-toolset-9: scl enable gcc-toolset-9 'g++ atomic_test.cpp -latomic'

Actual results:
Compiling with System-Compiler works. Compiling with gcc-toolset-9 gives error: /opt/rh/gcc-toolset-9/root/usr/bin/ld: cannot find -latomic

Expected results:
The code should also compile and link with the gcc-toolset-9.

Additional info:
When I create a symlink in /opt/rh/gcc-toolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/ to the file from the system-compiler it works.
These are the command I executed for my workaround:
sudo ln -s /usr/lib/gcc/x86_64-redhat-linux/8/libatomic.so /opt/rh/gcc-toolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/libatomic.so
sudo ln -s /usr/lib/gcc/x86_64-redhat-linux/8/libatomic.a /opt/rh/gcc-toolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/libatomic.a