1project(Eigen) 2 3cmake_minimum_required(VERSION 2.8.2) 4 5# guard against in-source builds 6 7if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR}) 8 message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there. You may need to remove CMakeCache.txt. ") 9endif() 10 11# guard against bad build-type strings 12 13if (NOT CMAKE_BUILD_TYPE) 14 set(CMAKE_BUILD_TYPE "Release") 15endif() 16 17string(TOLOWER "${CMAKE_BUILD_TYPE}" cmake_build_type_tolower) 18if( NOT cmake_build_type_tolower STREQUAL "debug" 19 AND NOT cmake_build_type_tolower STREQUAL "release" 20 AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo") 21 message(FATAL_ERROR "Unknown build type \"${CMAKE_BUILD_TYPE}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).") 22endif() 23 24 25############################################################################# 26# retrieve version infomation # 27############################################################################# 28 29# automatically parse the version number 30file(READ "${PROJECT_SOURCE_DIR}/Eigen/src/Core/util/Macros.h" _eigen_version_header) 31string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen_world_version_match "${_eigen_version_header}") 32set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}") 33string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen_major_version_match "${_eigen_version_header}") 34set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}") 35string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_version_match "${_eigen_version_header}") 36set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}") 37set(EIGEN_VERSION_NUMBER ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION}) 38 39# if the mercurial program is absent, this will leave the EIGEN_HG_CHANGESET string empty, 40# but won't stop CMake. 41execute_process(COMMAND hg tip -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_HGTIP_OUTPUT) 42execute_process(COMMAND hg branch -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_BRANCH_OUTPUT) 43 44# if this is the default (aka development) branch, extract the mercurial changeset number from the hg tip output... 45if(EIGEN_BRANCH_OUTPUT MATCHES "default") 46string(REGEX MATCH "^changeset: *[0-9]*:([0-9;a-f]+).*" EIGEN_HG_CHANGESET_MATCH "${EIGEN_HGTIP_OUTPUT}") 47set(EIGEN_HG_CHANGESET "${CMAKE_MATCH_1}") 48endif(EIGEN_BRANCH_OUTPUT MATCHES "default") 49#...and show it next to the version number 50if(EIGEN_HG_CHANGESET) 51 set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (mercurial changeset ${EIGEN_HG_CHANGESET})") 52else(EIGEN_HG_CHANGESET) 53 set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}") 54endif(EIGEN_HG_CHANGESET) 55 56 57include(CheckCXXCompilerFlag) 58 59set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake) 60 61############################################################################# 62# find how to link to the standard libraries # 63############################################################################# 64 65find_package(StandardMathLibrary) 66 67 68set(EIGEN_TEST_CUSTOM_LINKER_FLAGS "" CACHE STRING "Additional linker flags when linking unit tests.") 69set(EIGEN_TEST_CUSTOM_CXX_FLAGS "" CACHE STRING "Additional compiler flags when compiling unit tests.") 70 71set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "") 72 73if(NOT STANDARD_MATH_LIBRARY_FOUND) 74 75 message(FATAL_ERROR 76 "Can't link to the standard math library. Please report to the Eigen developers, telling them about your platform.") 77 78else() 79 80 if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) 81 set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO} ${STANDARD_MATH_LIBRARY}") 82 else() 83 set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${STANDARD_MATH_LIBRARY}") 84 endif() 85 86endif() 87 88if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) 89 message(STATUS "Standard libraries to link to explicitly: ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO}") 90else() 91 message(STATUS "Standard libraries to link to explicitly: none") 92endif() 93 94option(EIGEN_BUILD_BTL "Build benchmark suite" OFF) 95if(NOT WIN32) 96 option(EIGEN_BUILD_PKGCONFIG "Build pkg-config .pc file for Eigen" ON) 97endif(NOT WIN32) 98 99set(CMAKE_INCLUDE_CURRENT_DIR ON) 100 101option(EIGEN_SPLIT_LARGE_TESTS "Split large tests into smaller executables" ON) 102 103option(EIGEN_DEFAULT_TO_ROW_MAJOR "Use row-major as default matrix storage order" OFF) 104if(EIGEN_DEFAULT_TO_ROW_MAJOR) 105 add_definitions("-DEIGEN_DEFAULT_TO_ROW_MAJOR") 106endif() 107 108set(EIGEN_TEST_MAX_SIZE "320" CACHE STRING "Maximal matrix/vector size, default is 320") 109 110macro(ei_add_cxx_compiler_flag FLAG) 111 string(REGEX REPLACE "-" "" SFLAG ${FLAG}) 112 check_cxx_compiler_flag(${FLAG} COMPILER_SUPPORT_${SFLAG}) 113 if(COMPILER_SUPPORT_${SFLAG}) 114 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}") 115 endif() 116endmacro(ei_add_cxx_compiler_flag) 117 118if(NOT MSVC) 119 # We assume that other compilers are partly compatible with GNUCC 120 121 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions") 122 set(CMAKE_CXX_FLAGS_DEBUG "-g3") 123 set(CMAKE_CXX_FLAGS_RELEASE "-g0 -O2") 124 125 # clang outputs some warnings for unknwon flags that are not caught by check_cxx_compiler_flag 126 # adding -Werror turns such warnings into errors 127 check_cxx_compiler_flag("-Werror" COMPILER_SUPPORT_WERROR) 128 if(COMPILER_SUPPORT_WERROR) 129 set(CMAKE_REQUIRED_FLAGS "-Werror") 130 endif() 131 132 ei_add_cxx_compiler_flag("-pedantic") 133 ei_add_cxx_compiler_flag("-Wall") 134 ei_add_cxx_compiler_flag("-Wextra") 135 #ei_add_cxx_compiler_flag("-Weverything") # clang 136 137 ei_add_cxx_compiler_flag("-Wundef") 138 ei_add_cxx_compiler_flag("-Wcast-align") 139 ei_add_cxx_compiler_flag("-Wchar-subscripts") 140 ei_add_cxx_compiler_flag("-Wnon-virtual-dtor") 141 ei_add_cxx_compiler_flag("-Wunused-local-typedefs") 142 ei_add_cxx_compiler_flag("-Wpointer-arith") 143 ei_add_cxx_compiler_flag("-Wwrite-strings") 144 ei_add_cxx_compiler_flag("-Wformat-security") 145 146 ei_add_cxx_compiler_flag("-Wno-psabi") 147 ei_add_cxx_compiler_flag("-Wno-variadic-macros") 148 ei_add_cxx_compiler_flag("-Wno-long-long") 149 150 ei_add_cxx_compiler_flag("-fno-check-new") 151 ei_add_cxx_compiler_flag("-fno-common") 152 ei_add_cxx_compiler_flag("-fstrict-aliasing") 153 ei_add_cxx_compiler_flag("-wd981") # disable ICC's "operands are evaluated in unspecified order" remark 154 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 155 156 # The -ansi flag must be added last, otherwise it is also used as a linker flag by check_cxx_compiler_flag making it fails 157 # Moreover we should not set both -strict-ansi and -ansi 158 check_cxx_compiler_flag("-strict-ansi" COMPILER_SUPPORT_STRICTANSI) 159 ei_add_cxx_compiler_flag("-Qunused-arguments") # disable clang warning: argument unused during compilation: '-ansi' 160 161 if(COMPILER_SUPPORT_STRICTANSI) 162 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -strict-ansi") 163 else() 164 ei_add_cxx_compiler_flag("-ansi") 165 endif() 166 167 set(CMAKE_REQUIRED_FLAGS "") 168 169 option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF) 170 if(EIGEN_TEST_SSE2) 171 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2") 172 message(STATUS "Enabling SSE2 in tests/examples") 173 endif() 174 175 option(EIGEN_TEST_SSE3 "Enable/Disable SSE3 in tests/examples" OFF) 176 if(EIGEN_TEST_SSE3) 177 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse3") 178 message(STATUS "Enabling SSE3 in tests/examples") 179 endif() 180 181 option(EIGEN_TEST_SSSE3 "Enable/Disable SSSE3 in tests/examples" OFF) 182 if(EIGEN_TEST_SSSE3) 183 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3") 184 message(STATUS "Enabling SSSE3 in tests/examples") 185 endif() 186 187 option(EIGEN_TEST_SSE4_1 "Enable/Disable SSE4.1 in tests/examples" OFF) 188 if(EIGEN_TEST_SSE4_1) 189 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1") 190 message(STATUS "Enabling SSE4.1 in tests/examples") 191 endif() 192 193 option(EIGEN_TEST_SSE4_2 "Enable/Disable SSE4.2 in tests/examples" OFF) 194 if(EIGEN_TEST_SSE4_2) 195 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2") 196 message(STATUS "Enabling SSE4.2 in tests/examples") 197 endif() 198 199 option(EIGEN_TEST_ALTIVEC "Enable/Disable AltiVec in tests/examples" OFF) 200 if(EIGEN_TEST_ALTIVEC) 201 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec -mabi=altivec") 202 message(STATUS "Enabling AltiVec in tests/examples") 203 endif() 204 205 option(EIGEN_TEST_NEON "Enable/Disable Neon in tests/examples" OFF) 206 if(EIGEN_TEST_NEON) 207 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon -mcpu=cortex-a8") 208 message(STATUS "Enabling NEON in tests/examples") 209 endif() 210 211 check_cxx_compiler_flag("-fopenmp" COMPILER_SUPPORT_OPENMP) 212 if(COMPILER_SUPPORT_OPENMP) 213 option(EIGEN_TEST_OPENMP "Enable/Disable OpenMP in tests/examples" OFF) 214 if(EIGEN_TEST_OPENMP) 215 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp") 216 message(STATUS "Enabling OpenMP in tests/examples") 217 endif() 218 endif() 219 220else(NOT MSVC) 221 222 # C4127 - conditional expression is constant 223 # C4714 - marked as __forceinline not inlined (I failed to deactivate it selectively) 224 # We can disable this warning in the unit tests since it is clear that it occurs 225 # because we are oftentimes returning objects that have a destructor or may 226 # throw exceptions - in particular in the unit tests we are throwing extra many 227 # exceptions to cover indexing errors. 228 # C4505 - unreferenced local function has been removed (impossible to deactive selectively) 229 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /wd4127 /wd4505 /wd4714") 230 231 # replace all /Wx by /W4 232 string(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 233 234 check_cxx_compiler_flag("/openmp" COMPILER_SUPPORT_OPENMP) 235 if(COMPILER_SUPPORT_OPENMP) 236 option(EIGEN_TEST_OPENMP "Enable/Disable OpenMP in tests/examples" OFF) 237 if(EIGEN_TEST_OPENMP) 238 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /openmp") 239 message(STATUS "Enabling OpenMP in tests/examples") 240 endif() 241 endif() 242 243 option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF) 244 if(EIGEN_TEST_SSE2) 245 if(NOT CMAKE_CL_64) 246 # arch is not supported on 64 bit systems, SSE is enabled automatically. 247 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2") 248 endif(NOT CMAKE_CL_64) 249 message(STATUS "Enabling SSE2 in tests/examples") 250 endif(EIGEN_TEST_SSE2) 251endif(NOT MSVC) 252 253option(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION "Disable explicit vectorization in tests/examples" OFF) 254option(EIGEN_TEST_X87 "Force using X87 instructions. Implies no vectorization." OFF) 255option(EIGEN_TEST_32BIT "Force generating 32bit code." OFF) 256 257if(EIGEN_TEST_X87) 258 set(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION ON) 259 if(CMAKE_COMPILER_IS_GNUCXX) 260 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpmath=387") 261 message(STATUS "Forcing use of x87 instructions in tests/examples") 262 else() 263 message(STATUS "EIGEN_TEST_X87 ignored on your compiler") 264 endif() 265endif() 266 267if(EIGEN_TEST_32BIT) 268 if(CMAKE_COMPILER_IS_GNUCXX) 269 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32") 270 message(STATUS "Forcing generation of 32-bit code in tests/examples") 271 else() 272 message(STATUS "EIGEN_TEST_32BIT ignored on your compiler") 273 endif() 274endif() 275 276if(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION) 277 add_definitions(-DEIGEN_DONT_VECTORIZE=1) 278 message(STATUS "Disabling vectorization in tests/examples") 279endif() 280 281option(EIGEN_TEST_NO_EXPLICIT_ALIGNMENT "Disable explicit alignment (hence vectorization) in tests/examples" OFF) 282if(EIGEN_TEST_NO_EXPLICIT_ALIGNMENT) 283 add_definitions(-DEIGEN_DONT_ALIGN=1) 284 message(STATUS "Disabling alignment in tests/examples") 285endif() 286 287option(EIGEN_TEST_C++0x "Enables all C++0x features." OFF) 288 289include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) 290 291# the user modifiable install path for header files 292set(EIGEN_INCLUDE_INSTALL_DIR ${EIGEN_INCLUDE_INSTALL_DIR} CACHE PATH "The directory where we install the header files (optional)") 293 294# set the internal install path for header files which depends on wether the user modifiable 295# EIGEN_INCLUDE_INSTALL_DIR has been set by the user or not. 296if(EIGEN_INCLUDE_INSTALL_DIR) 297 set(INCLUDE_INSTALL_DIR 298 ${EIGEN_INCLUDE_INSTALL_DIR} 299 CACHE INTERNAL 300 "The directory where we install the header files (internal)" 301 ) 302else() 303 set(INCLUDE_INSTALL_DIR 304 "${CMAKE_INSTALL_PREFIX}/include/eigen3" 305 CACHE INTERNAL 306 "The directory where we install the header files (internal)" 307 ) 308endif() 309 310# similar to set_target_properties but append the property instead of overwriting it 311macro(ei_add_target_property target prop value) 312 313 get_target_property(previous ${target} ${prop}) 314 # if the property wasn't previously set, ${previous} is now "previous-NOTFOUND" which cmake allows catching with plain if() 315 if(NOT previous) 316 set(previous "") 317 endif(NOT previous) 318 set_target_properties(${target} PROPERTIES ${prop} "${previous} ${value}") 319endmacro(ei_add_target_property) 320 321install(FILES 322 signature_of_eigen3_matrix_library 323 DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel 324 ) 325 326if(EIGEN_BUILD_PKGCONFIG) 327 SET(path_separator ":") 328 STRING(REPLACE ${path_separator} ";" pkg_config_libdir_search "$ENV{PKG_CONFIG_LIBDIR}") 329 message(STATUS "searching for 'pkgconfig' directory in PKG_CONFIG_LIBDIR ( $ENV{PKG_CONFIG_LIBDIR} ), ${CMAKE_INSTALL_PREFIX}/share, and ${CMAKE_INSTALL_PREFIX}/lib") 330 FIND_PATH(pkg_config_libdir pkgconfig ${pkg_config_libdir_search} ${CMAKE_INSTALL_PREFIX}/share ${CMAKE_INSTALL_PREFIX}/lib ${pkg_config_libdir_search}) 331 if(pkg_config_libdir) 332 SET(pkg_config_install_dir ${pkg_config_libdir}) 333 message(STATUS "found ${pkg_config_libdir}/pkgconfig" ) 334 else(pkg_config_libdir) 335 SET(pkg_config_install_dir ${CMAKE_INSTALL_PREFIX}/share) 336 message(STATUS "pkgconfig not found; installing in ${pkg_config_install_dir}" ) 337 endif(pkg_config_libdir) 338 339 configure_file(eigen3.pc.in eigen3.pc) 340 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eigen3.pc 341 DESTINATION ${pkg_config_install_dir}/pkgconfig 342 ) 343endif(EIGEN_BUILD_PKGCONFIG) 344 345add_subdirectory(Eigen) 346 347add_subdirectory(doc EXCLUDE_FROM_ALL) 348 349include(EigenConfigureTesting) 350 351# fixme, not sure this line is still needed: 352enable_testing() # must be called from the root CMakeLists, see man page 353 354 355if(EIGEN_LEAVE_TEST_IN_ALL_TARGET) 356 add_subdirectory(test) # can't do EXCLUDE_FROM_ALL here, breaks CTest 357else() 358 add_subdirectory(test EXCLUDE_FROM_ALL) 359endif() 360 361if(EIGEN_LEAVE_TEST_IN_ALL_TARGET) 362 add_subdirectory(blas) 363 add_subdirectory(lapack) 364else() 365 add_subdirectory(blas EXCLUDE_FROM_ALL) 366 add_subdirectory(lapack EXCLUDE_FROM_ALL) 367endif() 368 369add_subdirectory(unsupported) 370 371add_subdirectory(demos EXCLUDE_FROM_ALL) 372 373# must be after test and unsupported, for configuring buildtests.in 374add_subdirectory(scripts EXCLUDE_FROM_ALL) 375 376# TODO: consider also replacing EIGEN_BUILD_BTL by a custom target "make btl"? 377if(EIGEN_BUILD_BTL) 378 add_subdirectory(bench/btl EXCLUDE_FROM_ALL) 379endif(EIGEN_BUILD_BTL) 380 381if(NOT WIN32) 382 add_subdirectory(bench/spbench EXCLUDE_FROM_ALL) 383endif(NOT WIN32) 384 385configure_file(scripts/cdashtesting.cmake.in cdashtesting.cmake @ONLY) 386 387ei_testing_print_summary() 388 389message(STATUS "") 390message(STATUS "Configured Eigen ${EIGEN_VERSION_NUMBER}") 391message(STATUS "") 392 393option(EIGEN_FAILTEST "Enable failtests." OFF) 394if(EIGEN_FAILTEST) 395 add_subdirectory(failtest) 396endif() 397 398string(TOLOWER "${CMAKE_GENERATOR}" cmake_generator_tolower) 399if(cmake_generator_tolower MATCHES "makefile") 400 message(STATUS "Some things you can do now:") 401 message(STATUS "--------------+--------------------------------------------------------------") 402 message(STATUS "Command | Description") 403 message(STATUS "--------------+--------------------------------------------------------------") 404 message(STATUS "make install | Install to ${CMAKE_INSTALL_PREFIX}. To change that:") 405 message(STATUS " | cmake . -DCMAKE_INSTALL_PREFIX=yourpath") 406 message(STATUS " | Eigen headers will then be installed to:") 407 message(STATUS " | ${INCLUDE_INSTALL_DIR}") 408 message(STATUS " | To install Eigen headers to a separate location, do:") 409 message(STATUS " | cmake . -DEIGEN_INCLUDE_INSTALL_DIR=yourpath") 410 message(STATUS "make doc | Generate the API documentation, requires Doxygen & LaTeX") 411 message(STATUS "make check | Build and run the unit-tests. Read this page:") 412 message(STATUS " | http://eigen.tuxfamily.org/index.php?title=Tests") 413 message(STATUS "make blas | Build BLAS library (not the same thing as Eigen)") 414 message(STATUS "--------------+--------------------------------------------------------------") 415else() 416 message(STATUS "To build/run the unit tests, read this page:") 417 message(STATUS " http://eigen.tuxfamily.org/index.php?title=Tests") 418endif() 419 420message(STATUS "") 421