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opencv/cmake/OpenCVFindLAPACK.cmake
dwardor 54c180092d
Merge pull request #21114 from dwardor:patch-1 
* Fix compile against lapack-3.10.0

Fix compilation against lapack >= 3.9.1 and 3.10.0 while not breaking older versions

OpenCVFindLAPACK.cmake & CMakeLists.txt: determine OPENCV_USE_LAPACK_PREFIX from LAPACK_VERSION

hal_internal.cpp : Only apply LAPACK_FUNC to functions whose number of inputs depends on LAPACK_FORTRAN_STR_LEN in lapack >= 3.9.1

lapack_check.cpp : remove LAPACK_FUNC which is not OK as function are not used with input parameters (so lapack.h preprocessing of "LAPACK_xxxx(...)" is not applicable with lapack >= 3.9.1
If not removed lapack_check fails so LAPACK is deactivated in build (not want we want)

use OCV_ prefix and don't use Global, instead generate OCV_LAPACK_FUNC depending on CMake Conditions

Remove CONFIG from find_package(LAPACK) and use LAPACK_GLOBAL and LAPACK_NAME to figure out if using netlib's reference LAPACK implementation and how to #define OCV_LAPACK_FUNC(f)

* Fix typos and grammar in comments
2021-12-22 12:00:00 +00:00

195 lines
7.4 KiB
CMake
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macro(_find_header_file_in_dirs VAR NAME)
unset(${VAR})
unset(${VAR} CACHE)
if(" ${ARGN}" STREQUAL " ")
check_include_file("${NAME}" HAVE_${VAR})
if(HAVE_${VAR})
set(${VAR} "${NAME}") # fallback
else()
set(${VAR} "")
endif()
else()
find_path(${VAR} "${NAME}" ${ARGN} NO_DEFAULT_PATH)
if(${VAR})
set(${VAR} "${${VAR}}/${NAME}")
unset(${VAR} CACHE)
else()
unset(${VAR} CACHE)
set(${VAR} "")
endif()
endif()
endmacro()
macro(ocv_lapack_check)
string(REGEX REPLACE "[^a-zA-Z0-9_]" "_" _lapack_impl "${LAPACK_IMPL}")
message(STATUS "LAPACK(${LAPACK_IMPL}): LAPACK_LIBRARIES: ${LAPACK_LIBRARIES}")
_find_header_file_in_dirs(OPENCV_CBLAS_H_PATH_${_lapack_impl} "${LAPACK_CBLAS_H}" "${LAPACK_INCLUDE_DIR}")
_find_header_file_in_dirs(OPENCV_LAPACKE_H_PATH_${_lapack_impl} "${LAPACK_LAPACKE_H}" "${LAPACK_INCLUDE_DIR}")
if(NOT OPENCV_CBLAS_H_PATH_${_lapack_impl} OR NOT OPENCV_LAPACKE_H_PATH_${_lapack_impl})
message(WARNING "LAPACK(${LAPACK_IMPL}): CBLAS/LAPACK headers are not found in '${LAPACK_INCLUDE_DIR}'")
unset(LAPACK_LIBRARIES)
else()
# adding proxy opencv_lapack.h header
set(CBLAS_H_PROXY_PATH ${CMAKE_BINARY_DIR}/opencv_lapack.h)
set(_lapack_add_extern_c NOT (APPLE OR OPENCV_SKIP_LAPACK_EXTERN_C) OR OPENCV_FORCE_LAPACK_EXTERN_C)
set(_lapack_content "// This file is auto-generated\n")
if(${_lapack_add_extern_c})
list(APPEND _lapack_content "extern \"C\" {")
endif()
if(NOT OPENCV_SKIP_LAPACK_MSVC_FIX)
list(APPEND _lapack_content "
#ifdef _MSC_VER
#include <complex.h>
#define lapack_complex_float _Fcomplex
#define lapack_complex_double _Dcomplex
#endif
")
endif()
list(APPEND _lapack_content "#include \"${OPENCV_CBLAS_H_PATH_${_lapack_impl}}\"")
if(NOT "${OPENCV_CBLAS_H_PATH_${_lapack_impl}}" STREQUAL "${OPENCV_LAPACKE_H_PATH_${_lapack_impl}}")
list(APPEND _lapack_content "#include \"${OPENCV_LAPACKE_H_PATH_${_lapack_impl}}\"")
endif()
list(APPEND _lapack_content "
#if defined(LAPACK_GLOBAL) || defined(LAPACK_NAME)
/*
* Using netlib's reference LAPACK implementation version >= 3.4.0 (first with C interface).
* Use LAPACK_xxxx to transparently (via predefined lapack macros) deal with pre and post 3.9.1 versions.
* LAPACK 3.9.1 introduces LAPACK_FORTRAN_STRLEN_END and modifies (through preprocessing) the declarations of the following functions used in opencv
* sposv_, dposv_, spotrf_, dpotrf_, sgesdd_, dgesdd_, sgels_, dgels_
* which end up with an extra parameter.
* So we also need to preprocess the function calls in opencv coding by prefixing them with LAPACK_.
* The good news is the preprocessing works fine whatever netlib's LAPACK version.
*/
#define OCV_LAPACK_FUNC(f) LAPACK_##f
#else
/* Using other LAPACK implementations so fall back to opencv's assumption until now */
#define OCV_LAPACK_FUNC(f) f##_
#endif
")
if(${_lapack_add_extern_c})
list(APPEND _lapack_content "}")
endif()
string(REPLACE ";" "\n" _lapack_content "${_lapack_content}")
ocv_update_file("${CBLAS_H_PROXY_PATH}" "${_lapack_content}")
try_compile(__VALID_LAPACK
"${OpenCV_BINARY_DIR}"
"${OpenCV_SOURCE_DIR}/cmake/checks/lapack_check.cpp"
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${LAPACK_INCLUDE_DIR}\;${CMAKE_BINARY_DIR}"
"-DLINK_DIRECTORIES:STRING=${LAPACK_LINK_LIBRARIES}"
"-DLINK_LIBRARIES:STRING=${LAPACK_LIBRARIES}"
OUTPUT_VARIABLE TRY_OUT
)
if(NOT __VALID_LAPACK)
#message(FATAL_ERROR "LAPACK: check build log:\n${TRY_OUT}")
message(STATUS "LAPACK(${LAPACK_IMPL}): Can't build LAPACK check code. This LAPACK version is not supported.")
unset(LAPACK_LIBRARIES)
else()
message(STATUS "LAPACK(${LAPACK_IMPL}): Support is enabled.")
ocv_include_directories(${LAPACK_INCLUDE_DIR})
set(HAVE_LAPACK 1)
endif()
endif()
endmacro()
if(WITH_LAPACK)
ocv_update(LAPACK_IMPL "Unknown")
if(NOT OPENCV_LAPACK_FIND_PACKAGE_ONLY)
if(NOT LAPACK_LIBRARIES AND NOT OPENCV_LAPACK_DISABLE_MKL)
include(cmake/OpenCVFindMKL.cmake)
if(HAVE_MKL)
set(LAPACK_INCLUDE_DIR ${MKL_INCLUDE_DIRS})
set(LAPACK_LIBRARIES ${MKL_LIBRARIES})
set(LAPACK_CBLAS_H "mkl_cblas.h")
set(LAPACK_LAPACKE_H "mkl_lapack.h")
set(LAPACK_IMPL "MKL")
ocv_lapack_check()
endif()
endif()
if(NOT LAPACK_LIBRARIES)
include(cmake/OpenCVFindOpenBLAS.cmake)
if(OpenBLAS_FOUND)
set(LAPACK_INCLUDE_DIR ${OpenBLAS_INCLUDE_DIR})
set(LAPACK_LIBRARIES ${OpenBLAS_LIB})
set(LAPACK_CBLAS_H "cblas.h")
set(LAPACK_LAPACKE_H "lapacke.h")
set(LAPACK_IMPL "OpenBLAS")
ocv_lapack_check()
endif()
endif()
if(NOT LAPACK_LIBRARIES AND UNIX)
include(cmake/OpenCVFindAtlas.cmake)
if(ATLAS_FOUND)
set(LAPACK_INCLUDE_DIR ${Atlas_INCLUDE_DIR})
set(LAPACK_LIBRARIES ${Atlas_LIBRARIES})
set(LAPACK_CBLAS_H "cblas.h")
set(LAPACK_LAPACKE_H "lapacke.h")
set(LAPACK_IMPL "Atlas")
ocv_lapack_check()
endif()
endif()
endif()
if(NOT LAPACK_LIBRARIES)
if(WIN32 AND NOT OPENCV_LAPACK_SHARED_LIBS)
set(BLA_STATIC 1)
endif()
find_package(LAPACK)
if(LAPACK_FOUND)
if(NOT DEFINED LAPACKE_INCLUDE_DIR)
find_path(LAPACKE_INCLUDE_DIR "lapacke.h")
endif()
if(NOT DEFINED MKL_LAPACKE_INCLUDE_DIR)
find_path(MKL_LAPACKE_INCLUDE_DIR "mkl_lapack.h")
endif()
if(MKL_LAPACKE_INCLUDE_DIR AND NOT OPENCV_LAPACK_DISABLE_MKL)
set(LAPACK_INCLUDE_DIR ${MKL_LAPACKE_INCLUDE_DIR})
set(LAPACK_CBLAS_H "mkl_cblas.h")
set(LAPACK_LAPACKE_H "mkl_lapack.h")
set(LAPACK_IMPL "LAPACK/MKL")
ocv_lapack_check()
endif()
if(NOT HAVE_LAPACK)
if(LAPACKE_INCLUDE_DIR)
set(LAPACK_INCLUDE_DIR ${LAPACKE_INCLUDE_DIR})
set(LAPACK_CBLAS_H "cblas.h")
set(LAPACK_LAPACKE_H "lapacke.h")
set(LAPACK_IMPL "LAPACK/Generic")
ocv_lapack_check()
elseif(APPLE)
set(LAPACK_CBLAS_H "Accelerate/Accelerate.h")
set(LAPACK_LAPACKE_H "Accelerate/Accelerate.h")
set(LAPACK_IMPL "LAPACK/Apple")
ocv_lapack_check()
endif()
endif()
endif()
if(NOT HAVE_LAPACK)
unset(LAPACK_LIBRARIES)
unset(LAPACK_LIBRARIES CACHE)
endif()
endif()
if(NOT LAPACK_LIBRARIES AND APPLE AND NOT OPENCV_LAPACK_FIND_PACKAGE_ONLY)
set(LAPACK_INCLUDE_DIR "")
set(LAPACK_LIBRARIES "-framework Accelerate")
set(LAPACK_CBLAS_H "Accelerate/Accelerate.h")
set(LAPACK_LAPACKE_H "Accelerate/Accelerate.h")
set(LAPACK_IMPL "Apple")
ocv_lapack_check()
endif()
if(NOT HAVE_LAPACK AND LAPACK_LIBRARIES AND LAPACK_CBLAS_H AND LAPACK_LAPACKE_H)
ocv_lapack_check()
endif()
set(LAPACK_INCLUDE_DIR ${LAPACK_INCLUDE_DIR} CACHE PATH "Path to BLAS include dir" FORCE)
set(LAPACK_CBLAS_H ${LAPACK_CBLAS_H} CACHE STRING "Alternative name of cblas.h" FORCE)
set(LAPACK_LAPACKE_H ${LAPACK_LAPACKE_H} CACHE STRING "Alternative name of lapacke.h" FORCE)
set(LAPACK_LIBRARIES ${LAPACK_LIBRARIES} CACHE STRING "Names of BLAS & LAPACK binaries (.so, .dll, .a, .lib)" FORCE)
set(LAPACK_IMPL ${LAPACK_IMPL} CACHE STRING "Lapack implementation id" FORCE)
endif()
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