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nilasonnilason
authoredMar 13, 2025··
cmake: add custom FindCBLAS FindLAPACKE (#5376)
This implementation makes use of pkg-config to find the CBLAS and LAPACKE libraries. It depends on CBLAS_PREFER_PKGCONFIG:BOOL=ON, which currently is the default (and practically the only option). - The CBLAS_PKGCONFIG may be set to the package name for finding CBLAS, e.g., -DCBLAS_PKGCONFIG=openblas. - The LAPACKE_PKGCONFIG may be set to the package name for finding CBLAS, e.g., -DLAPACKE_PKGCONFIG=openblas. By default the following pkg-config modules are searched for (in given order): - CBLAS_PKGCONFIG: cblas, blas-netlib, openblas and blas-atlas - LAPACKE_PKGCONFIG: lapacke and openblas
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‎cmake/find_scripts/FindBLAS.cmake

-1,426
This file was deleted.

‎cmake/find_scripts/FindCBLAS.cmake

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#[[
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COPYRIGHT: (c) 2025 Nicklas Larsson and the GRASS Development Team
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SPDX-License-Identifier: GPL-2.0-or-later
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]]
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#[=======================================================================[.rst:
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FindCBLAS
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---------
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Find CBLAS library, the C Interface to Basic Linear Algebra Subprograms (BLAS)
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.. _`BLAS linear-algebra interface`: https://netlib.org/blas/
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Input Variables
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^^^^^^^^^^^^^^^
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The following variables may be set to influence this module's behavior:
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``CBLAS_PREFER_PKGCONFIG``
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If set, ``pkg-config`` will be used to search for a CBLAS library
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and if one is found that is used.
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Note: this is currently the only method.
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``CBLAS_PKGCONFIG``
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If set, the ``pkg-config`` method will look for this module name. If not
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set ``cblas``, ``blas-netlib``, ``openblas`` and ``blas-atlas`` will be
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looked for (in that order).
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Imported targets
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^^^^^^^^^^^^^^^^
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This module defines the following :prop_tgt:`IMPORTED` targets:
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``CBLAS::CBLAS``
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The libraries to use for CBLAS, if found.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``CBLAS_FOUND``
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library implementing the CBLAS interface is found
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``CBLAS_LINKER_FLAGS``
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uncached list of required linker flags (excluding ``-l`` and ``-L``).
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``CBLAS_LIBRARIES``
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list of libraries (using full path name) to link against to use CBLAS
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``CBLAS_INCLUDE_DIRS``
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path to the CBLAS include directory.
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``CBLAS_VERSION``
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version of the module providing CBLAS
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#]=======================================================================]
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set(_default_pkgs cblas blas-netlib openblas blas-atlas)
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macro(_search_cblas_pkgs)
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foreach(_pkg ${_default_pkgs})
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pkg_check_modules(PKGC_CBLAS QUIET ${_pkg})
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if(PKGC_CBLAS_FOUND)
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set(CBLAS_PKGCONFIG ${_pkg})
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endif()
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endforeach()
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endmacro()
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if(CBLAS_PREFER_PKGCONFIG)
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find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
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if(NOT CBLAS_PKGCONFIG)
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_search_cblas_pkgs()
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endif()
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pkg_check_modules(PKGC_CBLAS QUIET ${CBLAS_PKGCONFIG})
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if(PKGC_CBLAS_FOUND)
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set(CBLAS_FOUND ${PKGC_CBLAS_FOUND})
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set(CBLAS_LIBRARIES "${PKGC_CBLAS_LINK_LIBRARIES}")
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set(CBLAS_INCLUDEDIR "${PKGC_CBLAS_INCLUDEDIR}")
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set(CBLAS_INCLUDE_DIRS ${PKGC_CBLAS_INCLUDEDIR}
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${PKGC_CBLAS_INCLUDE_DIRS})
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set(CBLAS_VERSION "${PKGC_CBLAS_VERSION}")
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set(CBLAS_LINKER_FLAGS "${PKGC_CBLAS_LDFLAGS}")
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list(REMOVE_DUPLICATES CBLAS_INCLUDE_DIRS)
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list(FILTER CBLAS_LINKER_FLAGS EXCLUDE REGEX "^-L\.*|^-l\.*")
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endif()
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endif()
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endif()
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unset(_default_pkgs)
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include(CheckSymbolExists)
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set(CMAKE_REQUIRED_LIBRARIES ${CBLAS_LIBRARIES})
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set(CMAKE_REQUIRED_INCLUDES ${CBLAS_INCLUDEDIR})
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set(CMAKE_REQUIRED_QUIET ${CBLAS_FIND_QUIETLY})
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check_symbol_exists(cblas_dgemm "cblas.h" HAVE_CBLAS_DGEMM)
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unset(CMAKE_REQUIRED_LIBRARIES)
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unset(CMAKE_REQUIRED_INCLUDES)
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unset(CMAKE_REQUIRED_QUIET)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(
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CBLAS
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REQUIRED_VARS CBLAS_FOUND CBLAS_LIBRARIES CBLAS_INCLUDEDIR HAVE_CBLAS_DGEMM
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VERSION_VAR CBLAS_VERSION)
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mark_as_advanced(CBLAS_LIBRARIES CBLAS_INCLUDEDIR)
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if(CBLAS_FOUND AND NOT TARGET CBLAS::CBLAS)
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add_library(CBLAS::CBLAS INTERFACE IMPORTED)
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set_target_properties(
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CBLAS::CBLAS PROPERTIES INTERFACE_LINK_LIBRARIES "${CBLAS_LIBRARIES}"
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INTERFACE_INCLUDE_DIRECTORIES "${CBLAS_INCLUDEDIR}")
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if(CBLAS_LINKER_FLAGS)
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set_target_properties(CBLAS::CBLAS PROPERTIES INTERFACE_LINK_OPTIONS
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"${CBLAS_LINKER_FLAGS}")
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endif()
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endif()

‎cmake/find_scripts/FindLAPACK.cmake

-817
This file was deleted.

‎cmake/find_scripts/FindLAPACKE.cmake

+119
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,119 @@
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#[[
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COPYRIGHT: (c) 2025 Nicklas Larsson and the GRASS Development Team
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SPDX-License-Identifier: GPL-2.0-or-later
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]]
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#[=======================================================================[.rst:
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FindLAPACKE
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-----------
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Find LAPACKE library, the C Interface to LAPACK.
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.. _`The LAPACKE C Interface to LAPACK`: https://www.netlib.org/lapack/lapacke.html
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Input Variables
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^^^^^^^^^^^^^^^
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The following variables may be set to influence this module's behavior:
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``CBLAS_PREFER_PKGCONFIG``
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If set ``pkg-config`` will be used to search for a CBLAS library
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and if one is found that is used.
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Note: this is currently the only method.
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``LAPACKE_PKGCONFIG``
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If set, the ``pkg-config`` method will look for this module name. If not
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set ``lapacke``and ``openblas`` will be looked for (in that order).
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Imported targets
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^^^^^^^^^^^^^^^^
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This module defines the following :prop_tgt:`IMPORTED` targets:
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``LAPACKE::LAPACKE``
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The libraries to use for LAPACKE, if found.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``LAPACKE_FOUND``
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library implementing the LAPACKE interface is found
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``LAPACKE_LINKER_FLAGS``
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uncached list of required linker flags (excluding ``-l`` and ``-L``).
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``LAPACKE_LIBRARIES``
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list of libraries (using full path name) to link against to use LAPACKE
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``LAPACKE_INCLUDE_DIRS``
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path to the CBLAS include directory.
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``LAPACKE_VERSION``
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version of the module providing LAPACKE
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#]=======================================================================]
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set(_default_pkgs lapacke openblas)
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macro(_search_lapacke_pkgs)
60+
foreach(_pkg ${_default_pkgs})
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pkg_check_modules(PKGC_LAPACKE QUIET ${_pkg})
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if(PKGC_LAPACKE_FOUND)
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set(LAPACKE_PKGCONFIG ${_pkg})
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endif()
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endforeach()
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endmacro()
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if(CBLAS_PREFER_PKGCONFIG)
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find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
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if(NOT LAPACKE_PKGCONFIG)
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_search_lapacke_pkgs()
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endif()
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pkg_check_modules(PKGC_LAPACKE QUIET ${LAPACKE_PKGCONFIG})
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if(PKGC_LAPACKE_FOUND)
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set(LAPACKE_FOUND ${PKGC_LAPACKE_FOUND})
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set(LAPACKE_LIBRARIES "${PKGC_LAPACKE_LINK_LIBRARIES}")
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set(LAPACKE_INCLUDEDIR "${PKGC_LAPACKE_INCLUDEDIR}")
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set(LAPACKE_INCLUDE_DIRS ${PKGC_LAPACKE_INCLUDEDIR}
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${PKGC_LAPACKE_INCLUDE_DIRS})
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set(LAPACKE_VERSION ${PKGC_LAPACKE_VERSION})
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set(LAPACKE_LINKER_FLAGS "${PKGC_LAPACKE_LDFLAGS}")
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list(REMOVE_DUPLICATES LAPACKE_INCLUDE_DIRS)
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list(FILTER LAPACKE_LINKER_FLAGS EXCLUDE REGEX "^-L\.*|^-l\.*")
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endif()
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endif()
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endif()
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unset(_default_pkgs)
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include(CheckSymbolExists)
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set(CMAKE_REQUIRED_LIBRARIES ${LAPACKE_LIBRARIES})
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set(CMAKE_REQUIRED_INCLUDES ${LAPACKE_INCLUDEDIR})
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set(CMAKE_REQUIRED_QUIET ${LAPACKE_FIND_QUIETLY})
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check_symbol_exists(LAPACKE_dgesv "lapacke.h" HAVE_LAPACKE_DGESV)
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unset(CMAKE_REQUIRED_LIBRARIES)
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unset(CMAKE_REQUIRED_INCLUDES)
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unset(CMAKE_REQUIRED_QUIET)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(
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LAPACKE
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REQUIRED_VARS LAPACKE_FOUND LAPACKE_LIBRARIES LAPACKE_INCLUDEDIR
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HAVE_LAPACKE_DGESV
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VERSION_VAR LAPACKE_VERSION)
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mark_as_advanced(LAPACKE_LIBRARIES LAPACKE_INCLUDEDIR)
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if(LAPACKE_FOUND AND NOT TARGET LAPACKE::LAPACKE)
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add_library(LAPACKE::LAPACKE INTERFACE IMPORTED)
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set_target_properties(
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LAPACKE::LAPACKE
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PROPERTIES INTERFACE_LINK_LIBRARIES "${LAPACKE_LIBRARIES}"
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INTERFACE_INCLUDE_DIRECTORIES "${LAPACKE_INCLUDEDIR}")
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if(LAPACKE_LINKER_FLAGS)
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set_target_properties(LAPACKE::LAPACKE PROPERTIES INTERFACE_LINK_OPTIONS
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"${LAPACKE_LINKER_FLAGS}")
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endif()
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endif()

‎cmake/modules/CheckDependentLibraries.cmake

+8-38
Original file line numberDiff line numberDiff line change
@@ -161,46 +161,18 @@ if(WITH_FFTW)
161161
endif()
162162
endif()
163163

164-
if(WIN32)
165-
set(BLA_PREFER_PKGCONFIG ON)
166-
set(BLA_PKGCONFIG_BLAS "openblas")
167-
set(BLA_PKGCONFIG_LAPACK "openblas")
168-
else()
169-
set(BLA_PKGCONFIG_BLAS "blas-netlib")
170-
set(BLA_PKGCONFIG_LAPACK "lapacke")
171-
endif()
172-
173164
if(WITH_CBLAS)
174-
# find_package(CBLAS CONFIG REQUIRED)
175-
pkg_check_modules(CBLAS QUIET ${BLA_PKGCONFIG_BLAS})
176-
if (CBLAS_FOUND)
177-
add_library(CBLAS INTERFACE IMPORTED GLOBAL)
178-
set_property(TARGET CBLAS PROPERTY INTERFACE_LINK_LIBRARIES
179-
${CBLAS_LIBRARIES})
180-
set_property(TARGET CBLAS PROPERTY INTERFACE_LINK_DIRECTORIES
181-
${CBLAS_LIBRARY_DIRS})
182-
set_property(TARGET CBLAS PROPERTY INTERFACE_INCLUDE_DIRECTORIES
183-
${CBLAS_INCLUDEDIR})
165+
if(NOT CBLAS_PREFER_PKGCONFIG)
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set(CBLAS_PREFER_PKGCONFIG ON)
184167
endif()
185-
include(FindPackageHandleStandardArgs)
186-
find_package_handle_standard_args(CBLAS REQUIRED_VARS CBLAS_LIBRARIES
187-
CBLAS_INCLUDEDIR)
168+
find_package(CBLAS REQUIRED)
188169
endif()
189170

190171
if(WITH_LAPACKE)
191-
# find_package(LAPACKE CONFIG REQUIRED)
192-
pkg_check_modules(LAPACKE QUIET ${BLA_PKGCONFIG_LAPACK})
193-
if(LAPACKE_FOUND)
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add_library(LAPACKE INTERFACE IMPORTED GLOBAL)
195-
set_property(TARGET LAPACKE PROPERTY INTERFACE_LINK_LIBRARIES
196-
${LAPACKE_LIBRARIES})
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set_property(TARGET LAPACKE PROPERTY INTERFACE_LINK_DIRECTORIES
198-
${LAPACKE_LIBRARY_DIRS})
199-
set_property(TARGET LAPACKE PROPERTY INTERFACE_INCLUDE_DIRECTORIES
200-
${LAPACKE_INCLUDEDIR})
172+
if(NOT WITH_CBLAS)
173+
message(FATAL_ERROR "LAPACKE support requires CBLAS")
201174
endif()
202-
find_package_handle_standard_args(LAPACKE REQUIRED_VARS LAPACKE_LIBRARIES
203-
LAPACKE_INCLUDEDIR)
175+
find_package(LAPACKE REQUIRED)
204176
endif()
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206178
if(WITH_OPENMP)
@@ -292,10 +264,8 @@ check_target(Cairo::Cairo HAVE_CAIRO_H)
292264
# set(CMAKE_REQUIRED_INCLUDES "${FFTW_INCLUDE_DIR}") no target ATLAS in
293265
# thirdpary/CMakeLists.txt
294266
check_target(ATLAS HAVE_LIBATLAS)
295-
check_target(CBLAS HAVE_LIBBLAS)
296-
check_target(CBLAS HAVE_CBLAS_H)
297-
check_target(LAPACKE HAVE_LIBLAPACK)
298-
check_target(LAPACKE HAVE_CLAPACK_H)
267+
check_target(CBLAS::CBLAS HAVE_LIBBLAS)
268+
check_target(LAPACKE::LAPACKE HAVE_LIBLAPACK)
299269
check_target(TIFF::TIFF HAVE_TIFFIO_H)
300270
check_target(NETCDF HAVE_NETCDF)
301271
check_target(GEOS::geos_c HAVE_GEOS)

‎cmake/modules/Configure.cmake

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@@ -22,6 +22,9 @@ check_include_file(sys/types.h HAVE_SYS_TYPES_H)
2222
check_include_file(sys/utsname.h HAVE_SYS_UTSNAME_H)
2323
check_include_file(g2c.h HAVE_G2C_H)
2424
check_include_file(f2c.h HAVE_F2C_H)
25+
check_include_file(cblas.h HAVE_CBLAS_H)
26+
check_include_file(cblas-atlas.h HAVE_CBLAS_ATLAS_H)
27+
2528

2629
if(MSVC)
2730
set(HAVE_PTHREAD_H 0)
@@ -46,10 +49,6 @@ endif()
4649
#
4750
# check_target(PROJ HAVE_PROJ_H)
4851
#
49-
# check_target(BLAS HAVE_LIBBLAS) check_target(BLAS HAVE_CBLAS_H)
50-
#
51-
# check_target(LAPACK HAVE_LIBLAPACK) check_target(LAPACK HAVE_CLAPACK_H)
52-
#
5352
# check_target(FREETYPE HAVE_FT2BUILD_H) check_target(POSTGRES HAVE_POSTGRES)
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# check_target(ODBC HAVE_SQL_H)
5554
#

‎include/config.h.cmake.in

+3-3
Original file line numberDiff line numberDiff line change
@@ -20,12 +20,12 @@
2020
/* Define to 1 if you have the <cairo.h> header file. */
2121
#cmakedefine HAVE_CAIRO_H ${HAVE_CAIRO_H}
2222

23+
/* Define to 1 if you have the <cblas-atlas.h> header file. */
24+
#cmakedefine HAVE_CBLAS_ATLAS_H ${HAVE_CBLAS_ATLAS_H}
25+
2326
/* Define to 1 if you have the <cblas.h> header file. */
2427
#cmakedefine HAVE_CBLAS_H ${HAVE_CBLAS_H}
2528

26-
/* Define to 1 if you have the <clapack.h> header file. */
27-
#cmakedefine HAVE_CLAPACK_H ${HAVE_CLAPACK_H}
28-
2929
/* Define to 1 if you have the <CL/cl.h> header file. */
3030
#cmakedefine HAVE_CL_CL_H ${HAVE_CL_CL_H}
3131

‎lib/CMakeLists.txt

+2-2
Original file line numberDiff line numberDiff line change
@@ -58,9 +58,9 @@ build_library_in_subdir(
5858
DEFS
5959
"${use_math_DEFS}"
6060
OPTIONAL_DEPENDS
61+
CBLAS::CBLAS
6162
FFTW
62-
LAPACKE
63-
CBLAS
63+
LAPACKE::LAPACKE
6464
OPENMP)
6565

6666
build_library_in_subdir(linkm)

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