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project ( Eigen )
cmake_minimum_required ( VERSION 2.8.2 )
# 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"
A N D N O T c m a k e _ b u i l d _ t y p e _ t o l o w e r S T R E Q U A L " r e l e a s e "
A N D N O T c m a k e _ b u i l d _ t y p e _ t o l o w e r S T R E Q U A L " r e l w i t h d e b i n f o " )
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 ${ PROJECT_SOURCE_DIR } /cmake )
#############################################################################
# find how to link to the standard libraries #
#############################################################################
find_package ( StandardMathLibrary )
set ( EIGEN_TEST_CUSTOM_LINKER_FLAGS "" CACHE STRING "Additional linker flags when linking unit tests." )
set ( EIGEN_TEST_CUSTOM_CXX_FLAGS "" CACHE STRING "Additional compiler flags when compiling unit tests." )
set ( EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "" )
if ( NOT STANDARD_MATH_LIBRARY_FOUND )
message ( FATAL_ERROR
" C a n ' t l i n k t o t h e s t a n d a r d m a t h l i b r a r y . P l e a s e r e p o r t t o t h e E i g e n d e v e l o p e r s , t e l l i n g t h e m a b o u t y o u r p l a t f o r m . " )
else ( )
if ( EIGEN_STANDARD_LIBRARIES_TO_LINK_TO )
set ( EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${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 "-" "" SFLAG ${ FLAG } )
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 ( "-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 "${CMAKE_CXX_FLAGS} -strict-ansi" )
else ( )
ei_add_cxx_compiler_flag ( "-ansi" )
endif ( )
set ( CMAKE_REQUIRED_FLAGS "" )
option ( EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF )
if ( EIGEN_TEST_SSE2 )
set ( CMAKE_CXX_FLAGS "${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_ALTIVEC "Enable/Disable AltiVec in tests/examples" OFF )
if ( EIGEN_TEST_ALTIVEC )
set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec -mabi=altivec" )
message ( STATUS "Enabling AltiVec in tests/examples" )
endif ( )
option ( EIGEN_TEST_NEON "Enable/Disable Neon in tests/examples" OFF )
if ( EIGEN_TEST_NEON )
set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon -mcpu=cortex-a8" )
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_C++0x "Enables all C++0x features." 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
$ { E I G E N _ I N C L U D E _ I N S T A L L _ D I R }
C A C H E I N T E R N A L
" T h e d i r e c t o r y w h e r e w e i n s t a l l t h e h e a d e r files ( internal ) "
)
else ( )
set ( INCLUDE_INSTALL_DIR
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" i n c l u d e / e i g e n 3 "
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C A C H E I N T E R N A L
" T h e d i r e c t o r y w h e r e w e i n s t a l l t h e h e a d e r 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
s i g n a t u r e _ o f _ e i g e n 3 _ m a t r i x _ l i b r a r y
D E S T I N A T I O N $ { I N C L U D E _ I N S T A L L _ D I R } C O M P O N E N T D e v e l
)
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
D E S T I N A T I O N $ { p k g _ c o n f i g _ i n s t a l l _ d i r } / p k g c o n f i g
)
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:" )
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message ( STATUS " | ${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" )
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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 "--------------+--------------------------------------------------------------" )
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 "" )
