cmake cannot find LAPACK and BLAS in MSYS2

[minnyres]

I am trying to build itpp in MSYS2 on Windows. The packages FFTW, LAPACK and BLAS are installed with MSYS2, but cmake cannot find LAPACK and BLAS.

cat@LAPTOP-LBAI8P2A MINGW64 ~/itpp-r4.3.0/build
$ cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../../itpp-win64  ..

CMake Deprecation Warning at CMakeLists.txt:28 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- The C compiler identification is GNU 11.2.0
-- The CXX compiler identification is GNU 11.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/gcc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/g++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for sgemm
-- Looking for sgemm - not found
-- Looking for sgemm
-- Looking for sgemm - not found
-- Looking for sgemm
-- Looking for sgemm - not found
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- A library with BLAS API not found. Please specify library location.
-- A library with BLAS API not found. Please specify library location.
-- LAPACK requires BLAS
-- A library with LAPACK API not found. Please specify library location.
-- Found FFT: C:/msys64/mingw64/lib/libfftw3.dll.a
-- A library with FFT API found.
-- Found OpenMP_C: -fopenmp (found version "4.5")
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- Could NOT find LATEX (missing: LATEX_COMPILER)
-- Looking for include files sys/time.h, time.h
-- Looking for include files sys/time.h, time.h - found
-- Looking for dlfcn.h
-- Looking for dlfcn.h - not found
-- Looking for ieeefp.h
-- Looking for ieeefp.h - found
-- Looking for inttypes.h
-- Looking for inttypes.h - found
-- Looking for memory.h
-- Looking for memory.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stdlib.h
-- Looking for stdlib.h - found
-- Looking for strings.h
-- Looking for strings.h - found
-- Looking for string.h
-- Looking for string.h - found
-- Looking for sys/stat.h
-- Looking for sys/stat.h - found
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Looking for C++ include cmath
-- Looking for C++ include cmath - found
-- Looking for C++ include complex
-- Looking for C++ include complex - found
-- Looking for isfinite
-- Looking for isfinite - not found
-- Looking for isinf
-- Looking for isinf - not found
-- Looking for isnan
-- Looking for isnan - not found
-- Looking for signgam
-- Looking for signgam - found
-- Looking for acosh
-- Looking for acosh - found
-- Looking for asinh
-- Looking for asinh - found
-- Looking for atanh
-- Looking for atanh - found
-- Looking for cbrt
-- Looking for cbrt - found
-- Looking for erf
-- Looking for erf - found
-- Looking for erfc
-- Looking for erfc - found
-- Looking for expm1
-- Looking for expm1 - found
-- Looking for finite
-- Looking for finite - found
-- Looking for isfinite
-- Looking for isfinite - not found
-- Looking for isinf
-- Looking for isinf - not found
-- Looking for isnan
-- Looking for isnan - found
-- Looking for lgamma
-- Looking for lgamma - found
-- Looking for log1p
-- Looking for log1p - found
-- Looking for log2
-- Looking for log2 - found
-- Looking for rint
-- Looking for rint - found
-- Looking for tgamma
-- Looking for tgamma - found
-- Looking for std::isfinite
-- Looking for std::isfinite - found
-- Looking for std::isinf
-- Looking for std::isinf - found
-- Looking for std::isnan
-- Looking for std::isnan - found
CMake Warning at CMakeLists.txt:186 (message):
  BLAS library not found.


CMake Warning at CMakeLists.txt:190 (message):
  LAPACK library not found.


CMake Warning at CMakeLists.txt:198 (message):
  You can still compile IT++ but the functionality will be reduced.


-- Configuring done
-- Generating done
-- Build files have been written to: C:/msys64/home/cat/itpp-r4.3.0/build

[minnyres]

I solved this problem by replacing the modules with the followings from the git repository of CMAKE:

https://raw.githubusercontent.com/Kitware/CMake/master/Modules/FindPackageMessage.cmake https://raw.githubusercontent.com/Kitware/CMake/master/Modules/CheckFunctionExists.cmake https://raw.githubusercontent.com/Kitware/CMake/master/Modules/FindPackageHandleStandardArgs.cmake https://raw.githubusercontent.com/Kitware/CMake/master/Modules/FindBLAS.cmake https://raw.githubusercontent.com/Kitware/CMake/master/Modules/FindLAPACK.cmake

[nvmd]

I can't unfortunately neither support nor test MSYS2 builds myself. A pull request would be very much appreciated!

[minnyres]

I can't unfortunately neither support nor test MSYS2 builds myself. A pull request would be very much appreciated!

I made a pull request to update the cmake modules. It is tested on Windows and Linux with cmake version 3.23.1. We may further test whether it will break with old cmake versions.