- Use the generic builder and override build and install phases instead
of using buildCommand and missing phases and hooks, like fixup.
- Fix build on Darwin by using the proper build script (ccc.osx).
- Add cctools to build inputs because ccc.osx uses the libtool
command.
- The install_name of the library is not set so fix it with
fixDarwinDylibNames.
- Install headers into the expected location $out/include/lpsolve
instead of $out/include. This follows what other distro do.
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