Open Source Computer Vision Library https://opencv.org/
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# ----- Find Matlab/Octave -----
#
# OpenCVFindMatlab.cmake attempts to locate the install path of Matlab in order
# to extract the mex headers, libraries and shell scripts. If found
# successfully, the following variables will be defined
#
# MATLAB_FOUND: true/false
# MATLAB_ROOT_DIR: Root of Matlab installation
# MATLAB_MEX_SCRIPT The mex script used to compile mex files
# MATLAB_INCLUDE_DIR Path to "mex.h"
# MATLAB_LIBRARY_DIR Path to mex and matrix libraries
# MATLAB_LIBS The Matlab libs, usually mx, mex, mat
# MATLAB_MEXEXT The mex library extension. It will be one of:
# mexwin32, mexwin64, mexglx, mexa64, mexmac,
# mexmaci, mexmaci64, mexsol, mexs64
# MATLAB_ARCH The installation architecture. It is simply
# the MEXEXT with the preceding "mex" removed
#
# There doesn't appear to be an elegant way to detect all versions of Matlab
# across different platforms. If you know the matlab path and want to avoid
# the search, you can define the path to the Matlab root when invoking cmake:
#
# cmake -DMATLAB_ROOT_DIR='/PATH/TO/ROOT_DIR' ..
# ----- locate_matlab_root -----
#
# Attempt to find the path to the Matlab installation. If successful, sets
# the absolute path in the variable MATLAB_ROOT_DIR
function(locate_matlab_root)
# --- LINUX ---
if (UNIX AND NOT APPLE)
# possible root locations, in order of likelihood
set(SEARCH_DIRS_ /usr/local /opt/local /usr /opt)
foreach (DIR_ ${SEARCH_DIRS_})
file(GLOB MATLAB_ROOT_DIR_ ${DIR_}/*matlab*)
if (MATLAB_ROOT_DIR_)
list(SORT MATLAB_ROOT_DIR_)
list(REVERSE MATLAB_ROOT_DIR_)
list(GET MATLAB_ROOT_DIR_ 0 MATLAB_ROOT_DIR_)
break()
endif()
endforeach()
# --- APPLE ---
elseif (APPLE)
# possible root locations, in order of likelihood
set(SEARCH_DIRS_ /Applications /usr/local /opt/local /usr /opt)
foreach (DIR_ ${SEARCH_DIRS_})
file(GLOB MATLAB_ROOT_DIR_ ${DIR_}/*matlab*)
if (MATLAB_ROOT_DIR_)
list(SORT MATLAB_ROOT_DIR_)
list(REVERSE MATLAB_ROOT_DIR_)
list(GET MATLAB_ROOT_DIR_ 0 MATLAB_ROOT_DIR_)
break()
endif()
endforeach()
# --- WINDOWS ---
elseif (WIN32)
# query the registry
set(REG_ROOTS_ "HKEY_LOCAL_MACHINE" "HKEY_CURRENT_USER")
foreach(REG_ROOT_ REG_ROOTS_)
execute_process(COMMAND reg query ${REG_ROOT_}\\SOFTWARE\\MathWorks\\MATLAB /f * /k OUTPUT_VARIABLE VERSIONS_)
if (VERSIONS_)
# sort in order from highest to lowest
list(SORT VERSIONS_)
list(REVERSE VERSIONS_)
list(GET VERSIONS_ 0 VERSION_)
get_filename_component(MATLAB_ROOT_DIR_ [${REG_ROOT_}\\SOFTWARE\\MathWorks\\MATLAB\\${VERSION_};Install_Dir] ABSOLUTE PATH)
if (MATLAB_ROOT_DIR_)
break()
endif()
endif()
endforeach()
endif()
# export output into parent scope
if (MATLAB_ROOT_DIR_)
set(MATLAB_ROOT_DIR ${MATLAB_ROOT_DIR_} PARENT_SCOPE)
endif()
return()
endfunction()
# ----- locate_matlab_components -----
#
# Given a directory MATLAB_ROOT_DIR, attempt to find the Matlab components
# (include directory and libraries) under the root. If everything is found,
# sets the variable MATLAB_FOUND to TRUE
function(locate_matlab_components MATLAB_ROOT_DIR)
# get the mex extension
if (UNIX)
execute_process(COMMAND ${MATLAB_ROOT_DIR}/bin/mexext OUTPUT_VARIABLE MATLAB_MEXEXT_)
elseif (WIN32)
execute_process(COMMAND ${MATLAB_ROOT_DIR}/bin/mexext.bat OUTPUT_VARIABLE MATLAB_MEXEXT_)
endif()
if (NOT MATLAB_MEXEXT_)
return()
endif()
string(STRIP ${MATLAB_MEXEXT_} MATLAB_MEXEXT_)
string(REPLACE "mex" "" MATLAB_ARCH_ ${MATLAB_MEXEXT_})
# get the path to the libraries
set(MATLAB_LIBRARY_DIR_ ${MATLAB_ROOT_DIR}/bin/${MATLAB_ARCH_})
# get the libraries
find_library(MATLAB_LIB_MX_ mx PATHS ${MATLAB_LIBRARY_DIR_} NO_DEFAULT_PATH)
find_library(MATLAB_LIB_MEX_ mex PATHS ${MATLAB_LIBRARY_DIR_} NO_DEFAULT_PATH)
find_library(MATLAB_LIB_MAT_ mat PATHS ${MATLAB_LIBRARY_DIR_} NO_DEFAULT_PATH)
set(MATLAB_LIBS_ ${MATLAB_LIB_MX_} ${MATLAB_LIB_MEX_} ${MATLAB_LIB_MAT_})
# get the include path
find_path(MATLAB_INCLUDE_DIR_ mex.h ${MATLAB_ROOT_DIR}/extern/include)
# get the mex shell script
find_file(MATLAB_MEX_SCRIPT_ NAMES mex mex.bat PATHS ${MATLAB_ROOT_DIR}/bin NO_DEFAULT_PATH)
# export into parent scope
if (MATLAB_MEX_SCRIPT_ AND MATLAB_LIBS_ AND MATLAB_INCLUDE_DIR_)
set(MATLAB_MEX_SCRIPT ${MATLAB_MEX_SCRIPT_} PARENT_SCOPE)
set(MATLAB_INCLUDE_DIR ${MATLAB_INCLUDE_DIR_} PARENT_SCOPE)
set(MATLAB_LIBS ${MATLAB_LIBS_} PARENT_SCOPE)
set(MATLAB_LIBRARY_DIR ${MATLAB_LIBRARY_DIR_} PARENT_SCOPE)
set(MATLAB_MEXEXT ${MATLAB_MEXEXT_} PARENT_SCOPE)
set(MATLAB_ARCH ${MATLAB_ARCH_} PARENT_SCOPE)
endif()
return()
endfunction()
# ----------------------------------------------------------------------------
# FIND MATLAB COMPONENTS
# ----------------------------------------------------------------------------
if (NOT MATLAB_FOUND)
# guilty until proven innocent
set(MATLAB_FOUND FALSE)
# attempt to find the Matlab root folder
if (NOT MATLAB_ROOT_DIR)
locate_matlab_root()
endif()
# given the matlab root folder, find the library locations
if (MATLAB_ROOT_DIR)
locate_matlab_components(${MATLAB_ROOT_DIR})
endif()
find_package_handle_standard_args(Matlab DEFAULT_MSG MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIR
MATLAB_ROOT_DIR MATLAB_LIBS MATLAB_LIBRARY_DIR
MATLAB_MEXEXT MATLAB_ARCH)
# if Matlab was not found, unset the local variables
if (NOT MATLAB_FOUND)
unset (MATLAB_ROOT_DIR)
endif()
endif()