#1523 Update CMakeLists.txt to enable Homebrew install

[Alexander Adolf]

As discussed in [#1319], I have amended CMakeLists.txt so that the install prefix can be specified on the command line as cmake -DCMAKE_INSTALL_PREFIX=prefix. The previous default behaviour is retained, i.e. if nothing is specified, stuff is installed into the same locations as before.

This is needed to create a Homebrew formula (which I am working on), so that macOS users can type brew install oorexx. Creating a new formula requires a source tarball, which is downloaded by the Homebrew scripts, unpacked, and built & installed with the flags determined by the formula script.

In order to be able to proceed with the Homebrew formula, I would thus need the attached CMakeLists.txt integrated into an oorexx 5.0.0 source tarball, and a download URL for that tarball.

Should you have any further questions or comments, please don't hesitate to let me know.

Many thanks in advance.

[Erich]

Comitted most suggested CMake changes with revision [r11397]

We currently do not provide source tarballs for each build. Can you pull the source from SVN and tar it yourself?