Description:

LAPACK usually installs a lapack-config.cmake as well as lapack-targets.cmake which can be used by other CMake-based projects through the CMake command find_package(LAPACK).

The ArchLinux package does not install those files. Additionally, some of the test files are installed, but this is not an issue.

Instead of using `install` in the PKGBUILD `make install` would solve this problem, but I'm not a packager so there might be a downside to it that I don't know of.

Additional info:
* Version: LAPACK 3.5.0-1


Steps to reproduce:
pacman -S lapack
pacman -Ql lapack
# contrast this with the list of files installed by make install
# ├── include
# │   ├── lapacke_config.h
# │   ├── lapacke.h
# │   ├── lapacke_mangling.h
# │   └── lapacke_utils.h
# └── lib
# ├── cmake
# │   └── lapack-3.4.2
# │   ├── lapack-config.cmake
# │   ├── lapack-config-version.cmake
# │   ├── lapack-targets.cmake
# │   └── lapack-targets-noconfig.cmake
# ├── libblas.so
# ├── liblapacke.so
# ├── liblapack.so
# └── pkgconfig
# ├── blas.pc
# ├── lapacke.pc
# └── lapack.pc