* Fix compiler test
Use `self.spec.satisfies` on compiler to determine if a flag should be
applied or not. This approach avoids issues with the strings `gcc`
or `clang` appearing in the full path to the compiler executables, as
happens with spack-installed compilers (e.g. `nvhpc%gcc`).
* Limit compiler name search to last path component
@skosukhin pointed out that the cflag modification should happen for any
clang or gcc compiler, regardless of what compiler spec provides them.
This commit reverts to searching for a compiler name containing "gcc"
or "clang", but limits the search to the last path component, which
avoids matching spack-installed compilers built with gcc (e.g.
`nvhpc%gcc`), which will have "gcc" in the compiler path.
* Use `os.path` rather than `pathlib`
Co-authored-by: Paul Henning <phenning@lanl.gov>
620836a809