project(Eigen) cmake_minimum_required(VERSION 2.8.4) # guard against in-source builds if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR}) message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there. You may need to remove CMakeCache.txt. ") endif() # guard against bad build-type strings if (NOT CMAKE_BUILD_TYPE) set(CMAKE_BUILD_TYPE "Release") endif() string(TOLOWER "${CMAKE_BUILD_TYPE}" cmake_build_type_tolower) if( NOT cmake_build_type_tolower STREQUAL "debug" AND NOT cmake_build_type_tolower STREQUAL "release" AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo") message(FATAL_ERROR "Unknown build type \"${CMAKE_BUILD_TYPE}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).") endif() ############################################################################# # retrieve version infomation # ############################################################################# # automatically parse the version number file(READ "${PROJECT_SOURCE_DIR}/Eigen/src/Core/util/Macros.h" _eigen_version_header) string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen_world_version_match "${_eigen_version_header}") set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}") string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen_major_version_match "${_eigen_version_header}") set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}") string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_version_match "${_eigen_version_header}") set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}") set(EIGEN_VERSION_NUMBER ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION}) # if the mercurial program is absent, this will leave the EIGEN_HG_CHANGESET string empty, # but won't stop CMake. execute_process(COMMAND hg tip -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_HGTIP_OUTPUT) execute_process(COMMAND hg branch -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_BRANCH_OUTPUT) # if this is the default (aka development) branch, extract the mercurial changeset number from the hg tip output... if(EIGEN_BRANCH_OUTPUT MATCHES "default") string(REGEX MATCH "^changeset: *[0-9]*:([0-9;a-f]+).*" EIGEN_HG_CHANGESET_MATCH "${EIGEN_HGTIP_OUTPUT}") set(EIGEN_HG_CHANGESET "${CMAKE_MATCH_1}") endif(EIGEN_BRANCH_OUTPUT MATCHES "default") #...and show it next to the version number if(EIGEN_HG_CHANGESET) set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (mercurial changeset ${EIGEN_HG_CHANGESET})") else(EIGEN_HG_CHANGESET) set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}") endif(EIGEN_HG_CHANGESET) include(CheckCXXCompilerFlag) set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake) ############################################################################# # find how to link to the standard libraries # ############################################################################# find_package(StandardMathLibrary) set(EIGEN_TEST_CUSTOM_LINKER_FLAGS "" CACHE STRING "Additional linker flags when linking unit tests.") set(EIGEN_TEST_CUSTOM_CXX_FLAGS "" CACHE STRING "Additional compiler flags when compiling unit tests.") set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "") if(NOT STANDARD_MATH_LIBRARY_FOUND) message(FATAL_ERROR "Can't link to the standard math library. Please report to the Eigen developers, telling them about your platform.") else() if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO} ${STANDARD_MATH_LIBRARY}") else() set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${STANDARD_MATH_LIBRARY}") endif() endif() if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) message(STATUS "Standard libraries to link to explicitly: ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO}") else() message(STATUS "Standard libraries to link to explicitly: none") endif() option(EIGEN_BUILD_BTL "Build benchmark suite" OFF) if(NOT WIN32) option(EIGEN_BUILD_PKGCONFIG "Build pkg-config .pc file for Eigen" ON) endif(NOT WIN32) set(CMAKE_INCLUDE_CURRENT_DIR ON) option(EIGEN_SPLIT_LARGE_TESTS "Split large tests into smaller executables" ON) option(EIGEN_DEFAULT_TO_ROW_MAJOR "Use row-major as default matrix storage order" OFF) if(EIGEN_DEFAULT_TO_ROW_MAJOR) add_definitions("-DEIGEN_DEFAULT_TO_ROW_MAJOR") endif() set(EIGEN_TEST_MAX_SIZE "320" CACHE STRING "Maximal matrix/vector size, default is 320") macro(ei_add_cxx_compiler_flag FLAG) string(REGEX REPLACE "-" "" SFLAG1 ${FLAG}) string(REGEX REPLACE "\\+" "p" SFLAG ${SFLAG1}) check_cxx_compiler_flag(${FLAG} COMPILER_SUPPORT_${SFLAG}) if(COMPILER_SUPPORT_${SFLAG}) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}") endif() endmacro(ei_add_cxx_compiler_flag) if(NOT MSVC) # We assume that other compilers are partly compatible with GNUCC # set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions") set(CMAKE_CXX_FLAGS_DEBUG "-g3") set(CMAKE_CXX_FLAGS_RELEASE "-g0 -O2") # clang outputs some warnings for unknwon flags that are not caught by check_cxx_compiler_flag # adding -Werror turns such warnings into errors check_cxx_compiler_flag("-Werror" COMPILER_SUPPORT_WERROR) if(COMPILER_SUPPORT_WERROR) set(CMAKE_REQUIRED_FLAGS "-Werror") endif() ei_add_cxx_compiler_flag("-pedantic") ei_add_cxx_compiler_flag("-Wall") ei_add_cxx_compiler_flag("-Wextra") #ei_add_cxx_compiler_flag("-Weverything") # clang ei_add_cxx_compiler_flag("-Wundef") ei_add_cxx_compiler_flag("-Wcast-align") ei_add_cxx_compiler_flag("-Wchar-subscripts") ei_add_cxx_compiler_flag("-Wnon-virtual-dtor") ei_add_cxx_compiler_flag("-Wunused-local-typedefs") ei_add_cxx_compiler_flag("-Wpointer-arith") ei_add_cxx_compiler_flag("-Wwrite-strings") ei_add_cxx_compiler_flag("-Wformat-security") ei_add_cxx_compiler_flag("-Wshorten-64-to-32") ei_add_cxx_compiler_flag("-Wenum-conversion") ei_add_cxx_compiler_flag("-Wc++11-extensions") # -Wshadow is insanely too strict with gcc, hopefully it will become usable with gcc 6 # if(NOT CMAKE_COMPILER_IS_GNUCXX OR (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.0.0")) if(NOT CMAKE_COMPILER_IS_GNUCXX) ei_add_cxx_compiler_flag("-Wshadow") endif() ei_add_cxx_compiler_flag("-Wno-psabi") ei_add_cxx_compiler_flag("-Wno-variadic-macros") ei_add_cxx_compiler_flag("-Wno-long-long") ei_add_cxx_compiler_flag("-fno-check-new") ei_add_cxx_compiler_flag("-fno-common") ei_add_cxx_compiler_flag("-fstrict-aliasing") ei_add_cxx_compiler_flag("-wd981") # disable ICC's "operands are evaluated in unspecified order" remark ei_add_cxx_compiler_flag("-wd2304") # disbale ICC's "warning #2304: non-explicit constructor with single argument may cause implicit type conversion" produced by -Wnon-virtual-dtor # The -ansi flag must be added last, otherwise it is also used as a linker flag by check_cxx_compiler_flag making it fails # Moreover we should not set both -strict-ansi and -ansi check_cxx_compiler_flag("-strict-ansi" COMPILER_SUPPORT_STRICTANSI) ei_add_cxx_compiler_flag("-Qunused-arguments") # disable clang warning: argument unused during compilation: '-ansi' if(COMPILER_SUPPORT_STRICTANSI) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -strict-ansi") else() ei_add_cxx_compiler_flag("-ansi") endif() if(ANDROID_NDK) ei_add_cxx_compiler_flag("-pie") ei_add_cxx_compiler_flag("-fPIE") endif() set(CMAKE_REQUIRED_FLAGS "") option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF) if(EIGEN_TEST_SSE2) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2") message(STATUS "Enabling SSE2 in tests/examples") endif() option(EIGEN_TEST_SSE3 "Enable/Disable SSE3 in tests/examples" OFF) if(EIGEN_TEST_SSE3) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse3") message(STATUS "Enabling SSE3 in tests/examples") endif() option(EIGEN_TEST_SSSE3 "Enable/Disable SSSE3 in tests/examples" OFF) if(EIGEN_TEST_SSSE3) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3") message(STATUS "Enabling SSSE3 in tests/examples") endif() option(EIGEN_TEST_SSE4_1 "Enable/Disable SSE4.1 in tests/examples" OFF) if(EIGEN_TEST_SSE4_1) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1") message(STATUS "Enabling SSE4.1 in tests/examples") endif() option(EIGEN_TEST_SSE4_2 "Enable/Disable SSE4.2 in tests/examples" OFF) if(EIGEN_TEST_SSE4_2) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2") message(STATUS "Enabling SSE4.2 in tests/examples") endif() option(EIGEN_TEST_AVX "Enable/Disable AVX in tests/examples" OFF) if(EIGEN_TEST_AVX) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx") message(STATUS "Enabling AVX in tests/examples") endif() option(EIGEN_TEST_FMA "Enable/Disable FMA in tests/examples" OFF) if(EIGEN_TEST_FMA AND NOT EIGEN_TEST_NEON) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfma") message(STATUS "Enabling FMA in tests/examples") endif() option(EIGEN_TEST_ALTIVEC "Enable/Disable AltiVec in tests/examples" OFF) if(EIGEN_TEST_ALTIVEC) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec -mabi=altivec") message(STATUS "Enabling AltiVec in tests/examples") endif() option(EIGEN_TEST_VSX "Enable/Disable VSX in tests/examples" OFF) if(EIGEN_TEST_VSX) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m64 -mvsx") message(STATUS "Enabling VSX in tests/examples") endif() option(EIGEN_TEST_NEON "Enable/Disable Neon in tests/examples" OFF) if(EIGEN_TEST_NEON) if(EIGEN_TEST_FMA) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon-vfpv4") else() set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon") endif() set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=softfp") message(STATUS "Enabling NEON in tests/examples") endif() option(EIGEN_TEST_NEON64 "Enable/Disable Neon in tests/examples" OFF) if(EIGEN_TEST_NEON64) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") message(STATUS "Enabling NEON in tests/examples") endif() check_cxx_compiler_flag("-fopenmp" COMPILER_SUPPORT_OPENMP) if(COMPILER_SUPPORT_OPENMP) option(EIGEN_TEST_OPENMP "Enable/Disable OpenMP in tests/examples" OFF) if(EIGEN_TEST_OPENMP) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp") message(STATUS "Enabling OpenMP in tests/examples") endif() endif() else(NOT MSVC) # C4127 - conditional expression is constant # C4714 - marked as __forceinline not inlined (I failed to deactivate it selectively) # We can disable this warning in the unit tests since it is clear that it occurs # because we are oftentimes returning objects that have a destructor or may # throw exceptions - in particular in the unit tests we are throwing extra many # exceptions to cover indexing errors. # C4505 - unreferenced local function has been removed (impossible to deactive selectively) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /wd4127 /wd4505 /wd4714") # replace all /Wx by /W4 string(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") check_cxx_compiler_flag("/openmp" COMPILER_SUPPORT_OPENMP) if(COMPILER_SUPPORT_OPENMP) option(EIGEN_TEST_OPENMP "Enable/Disable OpenMP in tests/examples" OFF) if(EIGEN_TEST_OPENMP) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /openmp") message(STATUS "Enabling OpenMP in tests/examples") endif() endif() option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF) if(EIGEN_TEST_SSE2) if(NOT CMAKE_CL_64) # arch is not supported on 64 bit systems, SSE is enabled automatically. set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2") endif(NOT CMAKE_CL_64) message(STATUS "Enabling SSE2 in tests/examples") endif(EIGEN_TEST_SSE2) endif(NOT MSVC) option(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION "Disable explicit vectorization in tests/examples" OFF) option(EIGEN_TEST_X87 "Force using X87 instructions. Implies no vectorization." OFF) option(EIGEN_TEST_32BIT "Force generating 32bit code." OFF) if(EIGEN_TEST_X87) set(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION ON) if(CMAKE_COMPILER_IS_GNUCXX) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpmath=387") message(STATUS "Forcing use of x87 instructions in tests/examples") else() message(STATUS "EIGEN_TEST_X87 ignored on your compiler") endif() endif() if(EIGEN_TEST_32BIT) if(CMAKE_COMPILER_IS_GNUCXX) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32") message(STATUS "Forcing generation of 32-bit code in tests/examples") else() message(STATUS "EIGEN_TEST_32BIT ignored on your compiler") endif() endif() if(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION) add_definitions(-DEIGEN_DONT_VECTORIZE=1) message(STATUS "Disabling vectorization in tests/examples") endif() option(EIGEN_TEST_NO_EXPLICIT_ALIGNMENT "Disable explicit alignment (hence vectorization) in tests/examples" OFF) if(EIGEN_TEST_NO_EXPLICIT_ALIGNMENT) add_definitions(-DEIGEN_DONT_ALIGN=1) message(STATUS "Disabling alignment in tests/examples") endif() option(EIGEN_TEST_NO_EXCEPTIONS "Disables C++ exceptions" OFF) if(EIGEN_TEST_NO_EXCEPTIONS) ei_add_cxx_compiler_flag("-fno-exceptions") message(STATUS "Disabling exceptions in tests/examples") endif() option(EIGEN_TEST_CXX11 "Enable testing with C++11 and C++11 features (e.g. Tensor module)." OFF) include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) # the user modifiable install path for header files set(EIGEN_INCLUDE_INSTALL_DIR ${EIGEN_INCLUDE_INSTALL_DIR} CACHE PATH "The directory where we install the header files (optional)") # set the internal install path for header files which depends on wether the user modifiable # EIGEN_INCLUDE_INSTALL_DIR has been set by the user or not. if(EIGEN_INCLUDE_INSTALL_DIR) set(INCLUDE_INSTALL_DIR ${EIGEN_INCLUDE_INSTALL_DIR} CACHE INTERNAL "The directory where we install the header files (internal)" ) else() set(INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/include/eigen3" CACHE INTERNAL "The directory where we install the header files (internal)" ) endif() # similar to set_target_properties but append the property instead of overwriting it macro(ei_add_target_property target prop value) get_target_property(previous ${target} ${prop}) # if the property wasn't previously set, ${previous} is now "previous-NOTFOUND" which cmake allows catching with plain if() if(NOT previous) set(previous "") endif(NOT previous) set_target_properties(${target} PROPERTIES ${prop} "${previous} ${value}") endmacro(ei_add_target_property) install(FILES signature_of_eigen3_matrix_library DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel ) if(EIGEN_BUILD_PKGCONFIG) SET(path_separator ":") STRING(REPLACE ${path_separator} ";" pkg_config_libdir_search "$ENV{PKG_CONFIG_LIBDIR}") message(STATUS "searching for 'pkgconfig' directory in PKG_CONFIG_LIBDIR ( $ENV{PKG_CONFIG_LIBDIR} ), ${CMAKE_INSTALL_PREFIX}/share, and ${CMAKE_INSTALL_PREFIX}/lib") FIND_PATH(pkg_config_libdir pkgconfig ${pkg_config_libdir_search} ${CMAKE_INSTALL_PREFIX}/share ${CMAKE_INSTALL_PREFIX}/lib ${pkg_config_libdir_search}) if(pkg_config_libdir) SET(pkg_config_install_dir ${pkg_config_libdir}) message(STATUS "found ${pkg_config_libdir}/pkgconfig" ) else(pkg_config_libdir) SET(pkg_config_install_dir ${CMAKE_INSTALL_PREFIX}/share) message(STATUS "pkgconfig not found; installing in ${pkg_config_install_dir}" ) endif(pkg_config_libdir) configure_file(eigen3.pc.in eigen3.pc) install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eigen3.pc DESTINATION ${pkg_config_install_dir}/pkgconfig ) endif(EIGEN_BUILD_PKGCONFIG) add_subdirectory(Eigen) add_subdirectory(doc EXCLUDE_FROM_ALL) include(EigenConfigureTesting) # fixme, not sure this line is still needed: enable_testing() # must be called from the root CMakeLists, see man page if(EIGEN_LEAVE_TEST_IN_ALL_TARGET) add_subdirectory(test) # can't do EXCLUDE_FROM_ALL here, breaks CTest else() add_subdirectory(test EXCLUDE_FROM_ALL) endif() if(EIGEN_LEAVE_TEST_IN_ALL_TARGET) add_subdirectory(blas) add_subdirectory(lapack) else() add_subdirectory(blas EXCLUDE_FROM_ALL) add_subdirectory(lapack EXCLUDE_FROM_ALL) endif() add_subdirectory(unsupported) add_subdirectory(demos EXCLUDE_FROM_ALL) # must be after test and unsupported, for configuring buildtests.in add_subdirectory(scripts EXCLUDE_FROM_ALL) # TODO: consider also replacing EIGEN_BUILD_BTL by a custom target "make btl"? if(EIGEN_BUILD_BTL) add_subdirectory(bench/btl EXCLUDE_FROM_ALL) endif(EIGEN_BUILD_BTL) if(NOT WIN32) add_subdirectory(bench/spbench EXCLUDE_FROM_ALL) endif(NOT WIN32) configure_file(scripts/cdashtesting.cmake.in cdashtesting.cmake @ONLY) ei_testing_print_summary() message(STATUS "") message(STATUS "Configured Eigen ${EIGEN_VERSION_NUMBER}") message(STATUS "") option(EIGEN_FAILTEST "Enable failtests." OFF) if(EIGEN_FAILTEST) add_subdirectory(failtest) endif() string(TOLOWER "${CMAKE_GENERATOR}" cmake_generator_tolower) if(cmake_generator_tolower MATCHES "makefile") message(STATUS "Some things you can do now:") message(STATUS "--------------+--------------------------------------------------------------") message(STATUS "Command | Description") message(STATUS "--------------+--------------------------------------------------------------") message(STATUS "make install | Install to ${CMAKE_INSTALL_PREFIX}. To change that:") message(STATUS " | cmake . -DCMAKE_INSTALL_PREFIX=yourpath") message(STATUS " | Eigen headers will then be installed to:") message(STATUS " | ${INCLUDE_INSTALL_DIR}") message(STATUS " | To install Eigen headers to a separate location, do:") message(STATUS " | cmake . -DEIGEN_INCLUDE_INSTALL_DIR=yourpath") message(STATUS "make doc | Generate the API documentation, requires Doxygen & LaTeX") message(STATUS "make check | Build and run the unit-tests. Read this page:") message(STATUS " | http://eigen.tuxfamily.org/index.php?title=Tests") message(STATUS "make blas | Build BLAS library (not the same thing as Eigen)") message(STATUS "make uninstall| Removes files installed by make install") message(STATUS "--------------+--------------------------------------------------------------") else() message(STATUS "To build/run the unit tests, read this page:") message(STATUS " http://eigen.tuxfamily.org/index.php?title=Tests") endif() message(STATUS "") set ( EIGEN_CONFIG_CMAKE_PATH lib${LIB_SUFFIX}/cmake/eigen3 CACHE PATH "The directory where the CMake files are installed" ) if ( NOT IS_ABSOLUTE EIGEN_CONFIG_CMAKE_PATH ) set ( EIGEN_CONFIG_CMAKE_PATH ${CMAKE_INSTALL_PREFIX}/${EIGEN_CONFIG_CMAKE_PATH} ) endif () set ( EIGEN_USE_FILE ${EIGEN_CONFIG_CMAKE_PATH}/UseEigen3.cmake ) set ( EIGEN_VERSION_STRING ${EIGEN_VERSION_NUMBER} ) set ( EIGEN_VERSION_MAJOR ${EIGEN_WORLD_VERSION} ) set ( EIGEN_VERSION_MINOR ${EIGEN_MAJOR_VERSION} ) set ( EIGEN_VERSION_PATCH ${EIGEN_MINOR_VERSION} ) set ( EIGEN_DEFINITIONS "") set ( EIGEN_INCLUDE_DIR ${INCLUDE_INSTALL_DIR} ) set ( EIGEN_INCLUDE_DIRS ${EIGEN_INCLUDE_DIR} ) set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} ) configure_file ( ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3Config.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake @ONLY ESCAPE_QUOTES ) install ( FILES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/UseEigen3.cmake ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake DESTINATION ${EIGEN_CONFIG_CMAKE_PATH} ) # Add uninstall target add_custom_target ( uninstall COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/EigenUninstall.cmake)