Add substitutions to `lapack.pc.in`, in order to ensure that
the generated `lapack64.pc` file correctly references the index64
library and BLAS dependency. It seems that other pkg-config templates
have been updated as part of #462 but this one was omitted.
As a result, finding a lapack64 via pkg-config gave non-index64
libraries.
Signed-off-by: Michał Górny <mgorny@gentoo.org>
* Distributions might need to change the header dir
* Also change the template paths in the `.pc` files to
the idiomatic CMake `GNUInstallDirs` full paths,
which are always correct, regardless of whether the
user specified relative or absolute paths. This makes
the build system somewhat easier and more idiomatic.
The prefix and libdir lines at the top of the .pc files are variable
declarations. Set these variables appropriately, reference them in the
rest of the file, and prevent cmake from expanding ${}-style references.
Switch back to @prefix@ and @libdir@ for compatibility with autoconf.
Make the descriptions consistent and update the URLs.
Michał Górny