Enhancement: Improve BASH_SHEBANG and PY_SHEBANG handling

[alanpearce]

I think it might be nice if the Makefile would try to detect the location of bash and python before using them. Alternatively it could just check if they exist and throw an error, so that the user doesn't end up with a broken build.

On FreeBSD, the build command has to be like this: sudo sh -c 'BASH_SHEBANG=which bashPY_SHEBANG=which pythongmake install', which is quite tedious.

[wilas]

I agree. if BASH_SHEBANG and/or PY_SHEBANG is not defined then Makefile should detect the location, if bash or python won't be found then an error message. If shebang are defined by user then check is not needed as shebang may look like /usr/bin/env python.

[wilas]

@alanpearce do you want work on this issue or do you want me to do this ? Just to avoid concurrent work :)

[alanpearce]

I'm not too familar with makefiles, so it'll probably be easier for you to do it, if that's okay :)

[wilas]

Sure :)