19063, "jhh67", "build system should produce a better error message if CHPL_LAUNCHER is invalid", "2022-01-20T17:54:49Z"
bash-3.2$ export CHPL_LAUNCHER=foo
bash-3.2$ make
...
Makefile.help:61: src/launch/foo/Makefile.include: No such file or directory
make[3]: *** No rule to make target `src/launch/foo/Makefile.include'. Stop.
It should tell me that CHPL_LAUNCHER is invalid and if possible list the valid launchers.