FreeCAD

FindNETGEN.cmake
149 строк · 6.4 Кб
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# Try to find nglib/netgen
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#
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# Optional input NETGENDATA is path to the netgen libsrc source tree - this is
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# required due to some headers not being installed by netgen.
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#
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# Once done this will define
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#
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# NGLIB_INCLUDE_DIR   - where the nglib include directory can be found
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# NGLIB_LIBRARIES     - Link this to use nglib
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# NETGEN_INCLUDE_DIRS - where the netgen include directories can be found
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# NETGEN_DEFINITIONS  - C++ compiler defines required to use netgen/nglib
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#
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# See also: http://git.salome-platform.org/gitweb/?p=NETGENPLUGIN_SRC.git;a=summary
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find_package(Netgen CONFIG)
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IF (Netgen_FOUND)
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    set(NGLIB_INCLUDE_DIR ${NETGEN_INCLUDE_DIRS})
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    set(NGLIB_LIBRARIES nglib)
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    set(NETGEN_DEFINITIONS -DNO_PARALLEL_THREADS -DOCCGEOMETRY)
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    # for external smesh only the following two variables are needed:
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    set(NETGEN_FOUND True)
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    set(NETGEN_INCLUDE_DIRS ${NETGEN_INCLUDE_DIRS})
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ELSE ()
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    SET(NETGEN_DEFINITIONS -DNO_PARALLEL_THREADS -DOCCGEOMETRY)
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    IF (WIN32)
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        FIND_PATH(NGLIB_INCLUDE_DIR NAMES nglib.h PATHS ${NETGEN_INCLUDEDIR})
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        SET(NETGEN_LIBS nglib mesh occ interface)
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        SET(NGLIB_LIBRARIES "")
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        FOREACH (it ${NETGEN_LIBS})
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            FIND_LIBRARY(NGLIB ${it} PATHS ${NETGEN_LIBDIR})
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            FIND_LIBRARY(NGLIBD ${it}d PATHS ${NETGEN_LIBDIR})
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            IF (NGLIBD AND NGLIB)
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                SET(NG_LIB optimized ${NGLIB}
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                        debug ${NGLIBD})
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                SET(NGLIB_LIBRARIES ${NGLIB_LIBRARIES} ${NG_LIB})
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                UNSET(NGLIB CACHE)
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                UNSET(NGLIBD CACHE)
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            ELSEIF (NGLIB)
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                SET(NGLIB_LIBRARIES ${NGLIB_LIBRARIES} ${NGLIB})
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                UNSET(NGLIB CACHE)
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            ENDIF ()
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        ENDFOREACH ()
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        IF (NOT NETGENDATA)
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            SET(NETGENDATA netgen)
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        ENDIF (NOT NETGENDATA)
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    ELSEIF (DEFINED MACPORTS_PREFIX OR DEFINED HOMEBREW_PREFIX)
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        IF (NETGEN_ROOT)
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            SET(NETGEN_INCLUDEDIR ${NETGEN_ROOT}/include)
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            SET(NETGEN_LIBDIR ${NETGEN_ROOT}/lib)
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            # allow to customize if NETGEN_ROOT is used
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            IF (NOT NETGENDATA)
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                SET(NETGENDATA ${NETGEN_ROOT}/libsrc)
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            ENDIF ()
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        ENDIF ()
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        FIND_PATH(NGLIB_INCLUDE_DIR NAMES nglib.h PATHS ${NETGEN_INCLUDEDIR} /usr/include /usr/include/netgen-mesher)
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        FIND_LIBRARY(NGLIB_LIBNGLIB nglib PATHS ${NETGEN_LIBDIR} /usr/lib /usr/lib64 /usr/local/lib)
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        SET(NGLIB_LIBRARIES ${NGLIB_LIBNGLIB})
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        FIND_LIBRARY(NGLIB_LIBMESH NAMES mesh ngmesh PATHS ${NETGEN_LIBDIR} /usr/lib /usr/lib64 /usr/local/lib)
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        IF (NGLIB_LIBMESH)
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            SET(NGLIB_LIBRARIES ${NGLIB_LIBRARIES} ${NGLIB_LIBMESH})
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        ENDIF ()
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        FIND_LIBRARY(NGLIB_LIBOCC NAMES occ ngocc PATHS ${NETGEN_LIBDIR} /usr/lib /usr/lib64 /usr/local/lib)
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        IF (NGLIB_LIBOCC)
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            SET(NGLIB_LIBRARIES ${NGLIB_LIBRARIES} ${NGLIB_LIBOCC})
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        ENDIF ()
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        FIND_LIBRARY(NGLIB_LIBINTERFACE NAMES interface nginterface PATHS ${NETGEN_LIBDIR} /usr/lib /usr/lib64 /usr/local/lib)
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        IF (NGLIB_LIBINTERFACE)
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            SET(NGLIB_LIBRARIES ${NGLIB_LIBRARIES} ${NGLIB_LIBINTERFACE})
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        ENDIF ()
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        IF (NOT NETGENDATA)
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            SET(NETGENDATA /usr/share/netgen/libsrc)
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        ENDIF ()
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    ENDIF ()
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    FIND_PATH(NETGEN_DIR_include NAMES mydefs.hpp NO_DEFAULT_PATH PATHS ${NGLIB_INCLUDE_DIR}/include ${NETGENDATA}/include ${NETGEN_INCLUDEDIR} ${NGLIB_INCLUDE_DIR})
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    IF (NOT NGLIB_INCLUDE_DIR AND NOT NETGEN_DIR_include)
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        MESSAGE(STATUS "Cannot find NETGEN header files.")
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    ELSEIF (NOT NETGEN_VERSION)
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        file(STRINGS ${NETGEN_DIR_include}/mydefs.hpp NETGEN_VERSION REGEX "#define PACKAGE_VERSION.*")
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    ENDIF ()
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    IF (NOT NGLIB_LIBRARIES)
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        MESSAGE(STATUS "Cannot find NETGEN library.")
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    ENDIF ()
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    IF (NGLIB_INCLUDE_DIR AND NGLIB_LIBRARIES)
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        SET(Netgen_FOUND TRUE)
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        SET(NETGEN_INCLUDE_DIRS ${NETGEN_DIR_include} ${NGLIB_INCLUDE_DIR})
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        LIST(REMOVE_DUPLICATES NETGEN_INCLUDE_DIRS)
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    ELSE ()
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        SET(Netgen_FOUND FALSE)
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    ENDIF ()
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ENDIF ()
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# Package-provided cMake file is not enough
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IF (Netgen_FOUND)
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    IF (NOT NETGEN_VERSION_MAJOR)
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        IF (NETGEN_VERSION)
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            string(REGEX MATCHALL "[0-9]+" NETGEN_VERSION_expr ${NETGEN_VERSION})
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            list(LENGTH NETGEN_VERSION_expr NETGEN_VERSION_COUNT)
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            list(GET NETGEN_VERSION_expr 0 NETGEN_VERSION_MAJOR)
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            IF (NETGEN_VERSION_COUNT GREATER 1)
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                list(GET NETGEN_VERSION_expr 1 NETGEN_VERSION_MINOR)
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            ELSE ()
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                set(NETGEN_VERSION_MINOR 0)
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            ENDIF ()
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        ELSE ()  # workaround for netgen 6.2 and newer. currently there is no easy way to detect the version
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            # better use "find_package(netgen CONFIG REQUIRED)"
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            set(NETGEN_VERSION_MAJOR 6)
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            set(NETGEN_VERSION_MINOR 2)
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        ENDIF ()
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        set(NETGEN_VERSION_PATCH 0)
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    ENDIF ()
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    MATH(EXPR NETGEN_VERSION_C "(${NETGEN_VERSION_MAJOR} << 16) + (${NETGEN_VERSION_MINOR} << 8) + (${NETGEN_VERSION_PATCH})")
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    MATH(EXPR NETGEN_VERSION_62 "(6 << 16) + (2 << 8)")
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    MATH(EXPR NETGEN_VERSION_62_2004 "(6 << 16) + (2 << 8) + (2004)")
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    IF (NOT NETGEN_VERSION_C LESS NETGEN_VERSION_62) # Version >= 6.2
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        IF (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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            # Clang sometimes fails to include <cstdio>
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            include(CMakePushCheckState)
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            cmake_push_check_state(RESET)
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            set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${NETGEN_CXX_FLAGS}")
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            check_cxx_source_compiles("#include <cstdio>\nint main(){}" CSTDIO_INCLUDE_TRY1)
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            IF (NOT CSTDIO_INCLUDE_TRY1)
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                # Ugly hack to make <stdio.h> building gets function
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                set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -U__cplusplus -D__cplusplus=201103L")
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                check_cxx_source_compiles("#include <cstdio>\nint main(){}" CSTDIO_INCLUDE_TRY2)
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                IF (NOT CSTDIO_INCLUDE_TRY2)
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                    message(FATAL_ERROR "Cannot #include <cstdio>.")
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                ELSE ()
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                    set(NETGEN_CXX_FLAGS "${NETGEN_CXX_FLAGS} -U__cplusplus -D__cplusplus=201103L")
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                ENDIF ()
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            ENDIF ()
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            cmake_pop_check_state()
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        ENDIF ()
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    ENDIF ()
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    MESSAGE(STATUS "Found NETGEN version ${NETGEN_VERSION_MAJOR}.${NETGEN_VERSION_MINOR}, calculated: ${NETGEN_VERSION_C}")
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    LIST(APPEND NETGEN_DEFINITIONS -DNETGEN_VERSION=${NETGEN_VERSION_C})
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ENDIF ()
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