mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
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307 lines
13 KiB
307 lines
13 KiB
# ---------------------------------------------------------------------------- |
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# CMake file for Matlab/Octave support |
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# |
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# Matlab code generation and compilation is broken down into two distinct |
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# stages: configure time and build time. The idea is that we want to give |
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# the user reasonable guarantees that once they type 'make', wrapper |
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# generation is unlikely to fail. Therefore we run a series of tests at |
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# configure time to check the working status of the core components. |
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# |
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# Configure Time |
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# During configure time, the script attempts to ascertain whether the |
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# generator and mex compiler are working for a given architecture. |
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# Currently this involves: |
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# 1) Generating a simple CV_EXPORTS_W symbol and checking whether a file |
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# of the symbol name is generated |
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# 2) Compiling a simple mex gateway to check that Bridge.hpp and mex.h |
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# can be found, and that a file with the mexext is produced |
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# |
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# Build Time |
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# If the configure time tests pass, then we assume Matlab wrapper generation |
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# will not fail during build time. We simply glob all of the symbols in |
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# the OpenCV module headers, generate intermediate .cpp files, then compile |
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# them with mex. |
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# ---------------------------------------------------------------------------- |
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# PREPEND |
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# Given a list of strings IN and a TOKEN, prepend the token to each string |
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# and append to OUT. This is used for passing command line "-I", "-L" and "-l" |
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# arguments to mex. e.g. |
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# prepend("-I" OUT /path/to/include/dir) --> -I/path/to/include/dir |
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macro(PREPEND TOKEN OUT IN) |
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foreach(VAR ${IN} ${ARGN}) |
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list(APPEND ${OUT} "${TOKEN}${VAR}") |
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endforeach() |
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endmacro() |
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# WARN_MIXED_PRECISION |
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# Formats a warning message if the compiler and Matlab bitness is different |
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macro(WARN_MIXED_PRECISION COMPILER_BITNESS MATLAB_BITNESS) |
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set(MSG "Your compiler is ${COMPILER_BITNESS}-bit") |
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set(MSG "${MSG} but your version of Matlab is ${MATLAB_BITNESS}-bit.") |
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set(MSG "${MSG} To build Matlab bindings, please switch to a ${MATLAB_BITNESS}-bit compiler.") |
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message(WARNING ${MSG}) |
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endmacro() |
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# ---------------------------------------------------------------------------- |
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# Architecture checks |
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# ---------------------------------------------------------------------------- |
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# make sure we're on a supported architecture with Matlab and python installed |
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if (IOS OR ANDROID OR NOT MATLAB_FOUND) |
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ocv_module_disable(matlab) |
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return() |
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elseif (NOT PYTHONLIBS_FOUND) |
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message(WARNING "A required dependency of the matlab module (PythonLibs) was not found. Disabling Matlab bindings...") |
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ocv_module_disable(matlab) |
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return() |
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endif() |
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# If the user built OpenCV as X-bit, but they have a Y-bit version of Matlab, |
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# attempting to link to OpenCV during binding generation will fail, since |
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# mixed precision pointers are not allowed. Disable the bindings. |
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math(EXPR ARCH "${CMAKE_SIZEOF_VOID_P} * 8") |
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if (${ARCH} EQUAL 32 AND ${MATLAB_ARCH} MATCHES "64") |
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warn_mixed_precision("32" "64") |
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ocv_module_disable(matlab) |
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return() |
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elseif (${ARCH} EQUAL 64 AND NOT ${MATLAB_ARCH} MATCHES "64") |
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warn_mixed_precision("64" "32") |
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ocv_module_disable(matlab) |
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return() |
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endif() |
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# If it's MSVC, warn the user that bindings will only be built in Release mode. |
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# Debug mode seems to cause issues... |
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if (MSVC) |
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message(STATUS "Warning: Matlab bindings will only be built in Release configurations") |
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endif() |
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# ---------------------------------------------------------------------------- |
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# Configure time components |
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# ---------------------------------------------------------------------------- |
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set(the_description "The Matlab/Octave bindings") |
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ocv_add_module(matlab BINDINGS |
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OPTIONAL opencv_core |
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opencv_imgproc opencv_ml opencv_highgui |
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opencv_objdetect opencv_flann opencv_features2d |
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opencv_photo opencv_video opencv_videostab |
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opencv_calib opencv_calib3d |
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opencv_stitching opencv_superres |
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opencv_nonfree |
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) |
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# get the commit information |
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execute_process(COMMAND git log -1 --pretty=%H OUTPUT_VARIABLE GIT_COMMIT ERROR_QUIET) |
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string(REGEX REPLACE "(\r?\n)+$" "" GIT_COMMIT "${GIT_COMMIT}") |
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# set the path to the C++ header and doc parser, and template engine |
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set(JINJA2_PATH ${CMAKE_SOURCE_DIR}/3rdparty) |
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set(HDR_PARSER_PATH ${CMAKE_SOURCE_DIR}/modules/python/src2) |
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set(RST_PARSER_PATH ${CMAKE_SOURCE_DIR}/modules/java/generator) |
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# set mex compiler options |
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prepend("-I" MEX_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include) |
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prepend("-L" MEX_LIB_DIR ${LIBRARY_OUTPUT_PATH}/${CMAKE_CFG_INTDIR} ) |
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set(MEX_OPTS "-largeArrayDims") |
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if (BUILD_TESTS) |
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add_subdirectory(test) |
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endif() |
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include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include) |
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# intersection of available modules and optional dependencies |
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# 1. populate the command-line include directories (-I/path/to/module/header, ...) |
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# 2. populate the command-line link libraries (-lopencv_core, ...) for Debug and Release |
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set(MATLAB_DEPS ${OPENCV_MODULE_${the_module}_REQ_DEPS} ${OPENCV_MODULE_${the_module}_OPT_DEPS}) |
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foreach(opencv_module ${MATLAB_DEPS}) |
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if (HAVE_${opencv_module}) |
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string(REPLACE "opencv_" "" module ${opencv_module}) |
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list(APPEND opencv_modules ${module}) |
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list(APPEND ${the_module}_ACTUAL_DEPS ${opencv_module}) |
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prepend("-I" MEX_INCLUDE_DIRS "${OPENCV_MODULE_${opencv_module}_LOCATION}/include") |
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prepend("-l" MEX_LIBS ${opencv_module}${OPENCV_DLLVERSION}) |
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prepend("-l" MEX_DEBUG_LIBS ${opencv_module}${OPENCV_DLLVERSION}${OPENCV_DEBUG_POSTFIX}) |
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endif() |
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endforeach() |
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# add extra headers by hand |
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list(APPEND opencv_extra_hdrs "core=${OPENCV_MODULE_opencv_core_LOCATION}/include/opencv2/core/base.hpp") |
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list(APPEND opencv_extra_hdrs "video=${OPENCV_MODULE_opencv_video_LOCATION}/include/opencv2/video/tracking.hpp") |
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# pass the OPENCV_CXX_EXTRA_FLAGS through to the mex compiler |
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# remove the visibility modifiers, so the mex gateway is visible |
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# TODO: get mex working without warnings |
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string(REGEX REPLACE "[^\ ]*visibility[^\ ]*" "" MEX_CXXFLAGS "${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}") |
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# Configure checks |
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# Check to see whether the generator and the mex compiler are working. |
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# The checks currently test: |
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# - whether the python generator can be found |
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# - whether the python generator correctly outputs a file for a definition |
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# - whether the mex compiler can find the required headers |
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# - whether the mex compiler can compile a trivial definition |
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if (NOT MEX_WORKS) |
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# attempt to generate a gateway for a function |
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message(STATUS "Trying to generate Matlab code") |
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execute_process( |
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COMMAND ${PYTHON_EXECUTABLE} |
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${CMAKE_CURRENT_SOURCE_DIR}/generator/gen_matlab.py |
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--jinja2 ${JINJA2_PATH} |
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--hdrparser ${HDR_PARSER_PATH} |
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--rstparser ${RST_PARSER_PATH} |
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--extra "test=${CMAKE_CURRENT_SOURCE_DIR}/test/test_generator.hpp" |
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--outdir ${CMAKE_BINARY_DIR}/junk |
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ERROR_VARIABLE GEN_ERROR |
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OUTPUT_QUIET |
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) |
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if (GEN_ERROR) |
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message(${GEN_ERROR}) |
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message(STATUS "Error generating Matlab code. Disabling Matlab bindings...") |
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ocv_module_disable(matlab) |
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return() |
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else() |
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message(STATUS "Trying to generate Matlab code - OK") |
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endif() |
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# attempt to compile a gateway using mex |
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message(STATUS "Trying to compile mex file") |
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execute_process( |
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COMMAND ${MATLAB_MEX_SCRIPT} ${MEX_OPTS} "CXXFLAGS=\$CXXFLAGS ${MEX_CXX_FLAGS}" |
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${MEX_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR}/test/test_compiler.cpp |
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WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/junk |
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ERROR_VARIABLE MEX_ERROR |
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OUTPUT_QUIET |
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) |
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if (MEX_ERROR) |
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message(${MEX_ERROR}) |
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message(STATUS "Error compiling mex file. Disabling Matlab bindings...") |
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ocv_module_disable(matlab) |
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return() |
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else() |
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message(STATUS "Trying to compile mex file - OK") |
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endif() |
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endif() |
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# if we make it here, mex works! |
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set(MEX_WORKS True CACHE BOOL ADVANCED) |
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# ---------------------------------------------------------------------------- |
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# Build time components |
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# ---------------------------------------------------------------------------- |
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# proxies |
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# these proxies are used to trigger the add_custom_commands |
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# (which do the real work) only when they're outdated |
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set(GENERATE_PROXY ${CMAKE_CURRENT_BINARY_DIR}/generate.proxy) |
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set(COMPILE_PROXY ${CMAKE_CURRENT_BINARY_DIR}/compile.proxy) |
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# TODO: Remove following line before merging with master |
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file(REMOVE ${GENERATE_PROXY} ${COMPILE_PROXY}) |
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# generate |
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# call the python executable to generate the Matlab gateways |
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add_custom_command( |
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OUTPUT ${GENERATE_PROXY} |
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COMMAND ${PYTHON_EXECUTABLE} |
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${CMAKE_CURRENT_SOURCE_DIR}/generator/gen_matlab.py |
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--jinja2 ${JINJA2_PATH} |
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--hdrparser ${HDR_PARSER_PATH} |
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--rstparser ${RST_PARSER_PATH} |
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--moduleroot ${CMAKE_SOURCE_DIR}/modules |
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--modules ${opencv_modules} |
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--extra ${opencv_extra_hdrs} |
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--outdir ${CMAKE_CURRENT_BINARY_DIR} |
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COMMAND ${PYTHON_EXECUTABLE} |
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${CMAKE_CURRENT_SOURCE_DIR}/generator/build_info.py |
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--jinja2 ${JINJA2_PATH} |
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--os ${CMAKE_SYSTEM} |
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--arch ${ARCH} ${CMAKE_SYSTEM_PROCESSOR} |
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--compiler ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION} |
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--mex_arch ${MATLAB_ARCH} |
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--mex_script ${MATLAB_MEX_SCRIPT} |
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--cxx_flags ${MEX_CXXFLAGS} |
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--opencv_version ${OPENCV_VERSION} |
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--commit ${GIT_COMMIT} |
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--modules ${opencv_modules} |
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--configuration $<CONFIGURATION> |
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--outdir ${CMAKE_CURRENT_BINARY_DIR} |
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COMMAND ${PYTHON_EXECUTABLE} |
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${CMAKE_CURRENT_SOURCE_DIR}/generator/cvmex.py |
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--jinja2 ${JINJA2_PATH} |
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--opts="${MEX_OPTS}" |
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--include_dirs="${MEX_INCLUDE_DIRS}" |
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--lib_dir="${MEX_LIB_DIR}" |
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--libs="${MEX_LIBS}" |
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--flags ${MEX_CXXFLAGS} |
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--outdir ${CMAKE_CURRENT_BINARY_DIR} |
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COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/test/help.m ${CMAKE_CURRENT_BINARY_DIR}/+cv |
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COMMAND ${CMAKE_COMMAND} -E touch ${GENERATE_PROXY} |
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COMMENT "Generating Matlab source files" |
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) |
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# compile |
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# call the mex compiler to compile the gateways |
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# because we don't know the source files at configure-time, this |
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# has to be executed in a separate script in cmake's script processing mode |
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add_custom_command( |
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OUTPUT ${COMPILE_PROXY} |
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COMMAND ${CMAKE_COMMAND} -DMATLAB_MEX_SCRIPT=${MATLAB_MEX_SCRIPT} |
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-DMATLAB_MEXEXT=${MATLAB_MEXEXT} |
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-DMEX_OPTS=${MEX_OPTS} |
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-DMEX_CXXFLAGS=${MEX_CXX_FLAGS} |
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-DMEX_INCLUDE_DIRS="${MEX_INCLUDE_DIRS}" |
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-DMEX_LIB_DIR="${MEX_LIB_DIR}" |
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-DCONFIGURATION="$<CONFIGURATION>" |
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-DMEX_LIBS="${MEX_LIBS}" |
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-DMEX_DEBUG_LIBS="${MEX_DEBUG_LIBS}" |
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-P ${CMAKE_CURRENT_SOURCE_DIR}/compile.cmake |
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COMMAND ${CMAKE_COMMAND} -E touch ${COMPILE_PROXY} |
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COMMENT "Compiling Matlab source files. This could take a while..." |
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) |
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# targets |
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# opencv_matlab_sources --> opencv_matlab |
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add_custom_target(${the_module}_sources ALL DEPENDS ${GENERATE_PROXY}) |
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add_custom_target(${the_module} ALL DEPENDS ${COMPILE_PROXY}) |
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add_dependencies(${the_module} ${the_module}_sources ${${the_module}_ACTUAL_DEPS}) |
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if (ENABLE_SOLUTION_FOLDERS) |
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set_target_properties(${the_module} PROPERTIES FOLDER "modules") |
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endif() |
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# ---------------------------------------------------------------------------- |
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# Install time components |
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# ---------------------------------------------------------------------------- |
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# NOTE: Trailing slashes on the DIRECTORY paths are important! |
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# TODO: What needs to be done with rpath???? |
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# install the +cv directory verbatim |
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install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/ DESTINATION ${OPENCV_INCLUDE_INSTALL_PATH}) |
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install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/+cv/ DESTINATION matlab/+cv) |
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/cv.m DESTINATION matlab) |
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# update the custom mex compiler to point to the install locations |
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string(REPLACE ";" "\\ " MEX_OPTS "${MEX_OPTS}") |
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string(REPLACE ";" "\\ " MEX_LIBS "${MEX_LIBS}") |
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string(REPLACE " " "\\ " MEX_CXXFLAGS ${MEX_CXXFLAGS}) |
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string(REPLACE ";" "\\ " MEX_INCLUDE_DIRS "${MEX_INCLUDE_DIRS}") |
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install(CODE |
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"execute_process( |
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COMMAND ${PYTHON_EXECUTABLE} |
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${CMAKE_CURRENT_SOURCE_DIR}/generator/cvmex.py |
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--jinja2 ${JINJA2_PATH} |
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--opts=${MEX_OPTS} |
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--include_dirs=-I${CMAKE_INSTALL_PREFIX}/${OPENCV_INCLUDE_INSTALL_PATH} |
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--lib_dir=-L${CMAKE_INSTALL_PREFIX}/${OPENCV_LIB_INSTALL_PATH} |
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--libs=${MEX_LIBS} |
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--flags=${MEX_CXXFLAGS} |
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--outdir ${CMAKE_INSTALL_PREFIX}/matlab |
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)" |
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)
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