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FindBoost.cmake 4.58 KiB
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# This file is NOT an original FindBoost.cmake module provided by KitWare!
# It's a simplified version whose only purpose is to be used in a software
# library lib4neuro and it does NOT provide a full funcionality of the original,
# as it only works with the system-layout-named libraries (e.g. libboost_system.so).
# Optional user-defined variables
# (can be passed directly to CMake or exported as environmental variables
# * BOOST_LIBRARYDIR - The path to the folder containing Boost libraries
# * BOOST_INCLUDEDIR - The path to the folder containing Boost header files
# "External" used variables
# * DEPENDENCIES_LINK_TYPE - TODO
# "Output" variables set after running this script
# * Boost_FOUND - TODO
# * Boost_INCLUDE_DIRS - TODO
# * Boost_LIBRARY_DIRS - TODO
# * Boost_LIBRARIES - TODO
# Module usage
# TODO
message("FindBoost starting...")
# Check if needed Boost components were specified
if(NOT Boost_FIND_COMPONENTS)
    message(FATAL_ERROR "No Boost components were specified! Please, set them correctly with flag COMPONENTS (see Module Usage section in this script).")
else()
    message("Required Boost components: ${Boost_FIND_COMPONENTS}")
endif()

# Look for a standard boost header file.
set(Boost_INCLUDE_DIRS "Boost_INCLUDE_DIRS-NOTFOUND")
find_path(
    Boost_INCLUDE_DIRS
    NAMES
        config.hpp
    HINTS
        ${BOOST_INCLUDEDIR}
        $ENV{BOOST_INCLUDEDIR}
        ${ROOT_DIR}/external_dependencies/boost
    PATHS
        /usr/include
        /home/boost
    PATH_SUFFIXES
        boost
        include
if(NOT Boost_INCLUDE_DIRS)
    message(FATAL_ERROR "Boost include directory was not found! Please, set variable BOOST_INCLUDEDIR to the correct path.")
# Create a list of requested Boost libraries with "system" names
if(NOT DEPENDENCIES_LINK_TYPE)
    message(FATAL_ERROR "Variable DEPENDENCIES_LINK_TYPE is not set! Set it to 'static' or 'shared'.")
set(LIB_SUFFIX "a")  # suffix for Linux static libraries
if("${DEPENDENCIES_LINK_TYPE}" STREQUAL "shared" AND WIN32)
    set(LIB_SUFFIX "dll")
elseif("${DEPENDENCIES_LINK_TYPE}" STREQUAL "static" AND WIN32)
    set(LIB_SUFFIX "lib")
elseif("${DEPENDENCIES_LINK_TYPE}" STREQUAL "shared")
    set(LIB_SUFFIX "so")
set(LIB_PREFIX "lib")
#if(WIN32)
#    set(LIB_PREFIX "")
#endif()
set(REQUESTED_BOOST_LIBS "")
foreach(COMPONENT ${Boost_FIND_COMPONENTS})
    list(APPEND REQUESTED_BOOST_LIBS "${LIB_PREFIX}boost_${COMPONENT}.${LIB_SUFFIX}")
endforeach()

# Look for libraries specified by COMPONENTS flag
#set(Boost_LIBRARY_DIRS "Boost_LIBRARY_DIRS-NOTFOUND")
#find_path(
#    Boost_LIBRARY_DIRS
#
#    NAMES
#        ${REQUESTED_BOOST_LIBS}
#
#    HINTS
#        ${BOOST_LIBRARYDIR}
#        $ENV{BOOST_LIBRARYDIR}
#        ${CMAKE_CURRENT_LIST_DIR}/external_dependencies/boost
#
#    PATHS
#        /usr/lib/boost
#        /usr/lib/x86_64-linux-gnu
#
#    PATH_SUFFIXES
#        stage/lib
#        lib
#)
# Construct list of libraries' names and make them
# targets, so they may be linked
set(Boost_LIBRARIES "")
foreach(LIBNAME ${REQUESTED_BOOST_LIBS})
    message("Looking for ${LIBNAME}...")

    set(${LIBNAME} "${LIBNAME}-NOTFOUND")
    find_library(
        ${LIBNAME}
        NAMES
        ${LIBNAME}
        HINTS
            ${BOOST_LIBRARYDIR}
            $ENV{BOOST_LIBRARYDIR}
            ${CMAKE_CURRENT_LIST_DIR}/external_dependencies/boost

        PATHS
            ${Boost_LIBRARY_DIRS}
            /usr/lib/boost
            /usr/lib/x86_64-linux-gnu
        PATH_SUFFIXES
            stage/lib
            lib
        NO_DEFAULT_PATH
    )
    message("${LIBNAME} ${${LIBNAME}}")

    # Check, if the Boost component was found
    if("${${LIBNAME}}" STREQUAL "${LIBNAME}-NOTFOUND")
        message(FATAL_ERROR "Boost library ${LIBNAME} was NOT found!\
                             Please, set variable BOOST_LIBRARYDIR to the correct path and check the library names\
                             format in your Boost installation.")
    else()
        message("${LIBNAME} was found: ${${LIBNAME}}")
    endif()
    list(APPEND Boost_LIBRARIES ${${LIBNAME}})
if(NOT Boost_LIBRARY_DIRS)
    message(FATAL_ERROR "Boost library directory was not found! Please, set variable BOOST_LIBRARYDIR to the correct path.")
# Set Boost_FOUND
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(
    Boost
    
    FAIL_MESSAGE 
        "Boost was NOT found!"
    
    REQUIRED_VARS
        Boost_INCLUDE_DIRS
        Boost_LIBRARY_DIRS
message("Boost_INCLUDE_DIRS: ${Boost_INCLUDE_DIRS}")
message("Boost_LIBRARY_DIRS: ${Boost_LIBRARY_DIRS}")
message("Boost_LIBRARIES: ${Boost_LIBRARIES}")