geos-config --version (return code: 0)
3.5.1
geos-config --help (return code: 1)
Usage: geos-config [OPTIONS]
Options:
[--prefix]
[--version]
[--libs]
[--clibs]
[--cclibs]
[--static-clibs]
[--static-cclibs]
[--cflags]
[--ldflags]
[--includes]
[--jtsport]