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34 lines
1.3 KiB
CMake

find_path(Eigen3_INCLUDE_DIR
NAMES signature_of_eigen3_matrix_library
PATH_SUFFIXES eigen3 eigen
DOC "Eigen include directory")
mark_as_advanced(Eigen3_INCLUDE_DIR)
if (Eigen3_INCLUDE_DIR)
file(STRINGS "${Eigen3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _Eigen3_version_lines
REGEX "#define[ \t]+EIGEN_(WORLD|MAJOR|MINOR)_VERSION")
string(REGEX REPLACE ".*EIGEN_WORLD_VERSION *\([0-9]*\).*" "\\1" _Eigen3_version_world "${_Eigen3_version_lines}")
string(REGEX REPLACE ".*EIGEN_MAJOR_VERSION *\([0-9]*\).*" "\\1" _Eigen3_version_major "${_Eigen3_version_lines}")
string(REGEX REPLACE ".*EIGEN_MINOR_VERSION *\([0-9]*\).*" "\\1" _Eigen3_version_minor "${_Eigen3_version_lines}")
set(Eigen3_VERSION "${_Eigen3_version_world}.${_Eigen3_version_major}.${_Eigen3_version_minor}")
unset(_Eigen3_version_world)
unset(_Eigen3_version_major)
unset(_Eigen3_version_minor)
unset(_Eigen3_version_lines)
endif ()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Eigen3
REQUIRED_VARS Eigen3_INCLUDE_DIR
VERSION_VAR Eigen3_VERSION)
if (Eigen3_FOUND)
set(Eigen3_INCLUDE_DIRS "${Eigen3_INCLUDE_DIR}")
if (NOT TARGET Eigen3::Eigen3)
add_library(Eigen3::Eigen3 INTERFACE IMPORTED)
set_target_properties(Eigen3::Eigen3 PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${Eigen3_INCLUDE_DIR}")
endif ()
endif ()