CMake/Modules/FindFLTK.cmake

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CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindFLTK
--------
Find the FLTK library
Input Variables
^^^^^^^^^^^^^^^
By default this module will search for all of the FLTK components and
add them to the FLTK_LIBRARIES variable. You can limit the components
which get placed in FLTK_LIBRARIES by defining one or more of the
following three options:
``FLTK_SKIP_OPENGL``
Set to true to disable searching for the FLTK GL library
``FLTK_SKIP_FORMS``
Set to true to disable searching for the FLTK Forms library
``FLTK_SKIP_IMAGES``
Set to true to disable searching for the FLTK Images library
FLTK is composed also by a binary tool. You can set the following option:
``FLTK_SKIP_FLUID``
Set to true to not look for the FLUID binary
Result Variables
^^^^^^^^^^^^^^^^
The following variables will be defined:
``FLTK_FOUND``
True if all components not skipped were found
``FLTK_INCLUDE_DIR``
Path to the include directory for FLTK header files
``FLTK_LIBRARIES``
List of the FLTK libraries found
``FLTK_FLUID_EXECUTABLE``
Path to the FLUID binary tool
``FLTK_WRAP_UI``
True if FLUID is found, used to enable the FLTK_WRAP_UI command
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables are also available to set or use:
``FLTK_BASE_LIBRARY_RELEASE``
The FLTK base library (optimized)
``FLTK_BASE_LIBRARY_DEBUG``
The FLTK base library (debug)
``FLTK_GL_LIBRARY_RELEASE``
The FLTK GL library (optimized)
``FLTK_GL_LIBRARY_DEBUG``
The FLTK GL library (debug)
``FLTK_FORMS_LIBRARY_RELEASE``
The FLTK Forms library (optimized)
``FLTK_FORMS_LIBRARY_DEBUG``
The FLTK Forms library (debug)
``FLTK_IMAGES_LIBRARY_RELEASE``
The FLTK Images protobuf library (optimized)
``FLTK_IMAGES_LIBRARY_DEBUG``
The FLTK Images library (debug)
#]=======================================================================]
if(NOT FLTK_SKIP_OPENGL)
find_package(OpenGL)
endif()
# Platform dependent libraries required by FLTK
if(WIN32)
if(NOT CYGWIN)
if(BORLAND)
set( FLTK_PLATFORM_DEPENDENT_LIBS import32 )
else()
set( FLTK_PLATFORM_DEPENDENT_LIBS wsock32 comctl32 )
endif()
endif()
endif()
if(UNIX)
include(${CMAKE_CURRENT_LIST_DIR}/FindX11.cmake)
find_library(FLTK_MATH_LIBRARY m)
set( FLTK_PLATFORM_DEPENDENT_LIBS ${X11_LIBRARIES} ${FLTK_MATH_LIBRARY})
endif()
if(APPLE)
set( FLTK_PLATFORM_DEPENDENT_LIBS "-framework Carbon -framework Cocoa -framework ApplicationServices -lz")
endif()
# If FLTK_INCLUDE_DIR is already defined we assigne its value to FLTK_DIR
if(FLTK_INCLUDE_DIR)
set(FLTK_DIR ${FLTK_INCLUDE_DIR})
endif()
# If FLTK has been built using CMake we try to find everything directly
set(FLTK_DIR_STRING "directory containing FLTKConfig.cmake. This is either the root of the build tree, or PREFIX/lib/fltk for an installation.")
# Search only if the location is not already known.
if(NOT FLTK_DIR)
# Get the system search path as a list.
file(TO_CMAKE_PATH "$ENV{PATH}" FLTK_DIR_SEARCH2)
# Construct a set of paths relative to the system search path.
set(FLTK_DIR_SEARCH "")
foreach(dir ${FLTK_DIR_SEARCH2})
set(FLTK_DIR_SEARCH ${FLTK_DIR_SEARCH} "${dir}/../lib/fltk")
endforeach()
string(REPLACE "//" "/" FLTK_DIR_SEARCH "${FLTK_DIR_SEARCH}")
#
# Look for an installation or build tree.
#
find_path(FLTK_DIR FLTKConfig.cmake
# Look for an environment variable FLTK_DIR.
HINTS
ENV FLTK_DIR
# Look in places relative to the system executable search path.
${FLTK_DIR_SEARCH}
PATH_SUFFIXES
fltk
fltk/include
lib/fltk
lib/fltk/include
# Help the user find it if we cannot.
DOC "The ${FLTK_DIR_STRING}"
)
endif()
# Check if FLTK was built using CMake
if(EXISTS ${FLTK_DIR}/FLTKConfig.cmake)
set(FLTK_BUILT_WITH_CMAKE 1)
endif()
if(FLTK_BUILT_WITH_CMAKE)
set(FLTK_FOUND 1)
include(${FLTK_DIR}/FLTKConfig.cmake)
# Fluid
if(FLUID_COMMAND)
set(FLTK_FLUID_EXECUTABLE ${FLUID_COMMAND} CACHE FILEPATH "Fluid executable")
else()
find_program(FLTK_FLUID_EXECUTABLE fluid PATHS
${FLTK_EXECUTABLE_DIRS}
${FLTK_EXECUTABLE_DIRS}/RelWithDebInfo
${FLTK_EXECUTABLE_DIRS}/Debug
${FLTK_EXECUTABLE_DIRS}/Release
NO_SYSTEM_PATH)
endif()
# mark_as_advanced(FLTK_FLUID_EXECUTABLE)
set(FLTK_INCLUDE_DIR ${FLTK_DIR})
link_directories(${FLTK_LIBRARY_DIRS})
set(FLTK_BASE_LIBRARY fltk)
set(FLTK_GL_LIBRARY fltk_gl)
set(FLTK_FORMS_LIBRARY fltk_forms)
set(FLTK_IMAGES_LIBRARY fltk_images)
# Add the extra libraries
load_cache(${FLTK_DIR}
READ_WITH_PREFIX
FL FLTK_USE_SYSTEM_JPEG
FL FLTK_USE_SYSTEM_PNG
FL FLTK_USE_SYSTEM_ZLIB
)
set(FLTK_IMAGES_LIBS "")
if(FLFLTK_USE_SYSTEM_JPEG)
set(FLTK_IMAGES_LIBS ${FLTK_IMAGES_LIBS} fltk_jpeg)
endif()
if(FLFLTK_USE_SYSTEM_PNG)
set(FLTK_IMAGES_LIBS ${FLTK_IMAGES_LIBS} fltk_png)
endif()
if(FLFLTK_USE_SYSTEM_ZLIB)
set(FLTK_IMAGES_LIBS ${FLTK_IMAGES_LIBS} fltk_zlib)
endif()
set(FLTK_IMAGES_LIBS "${FLTK_IMAGES_LIBS}" CACHE INTERNAL
"Extra libraries for fltk_images library.")
else()
# if FLTK was not built using CMake
# Find fluid executable.
find_program(FLTK_FLUID_EXECUTABLE fluid ${FLTK_INCLUDE_DIR}/fluid)
# Use location of fluid to help find everything else.
set(FLTK_INCLUDE_SEARCH_PATH "")
set(FLTK_LIBRARY_SEARCH_PATH "")
if(FLTK_FLUID_EXECUTABLE)
get_filename_component(FLTK_BIN_DIR "${FLTK_FLUID_EXECUTABLE}" PATH)
set(FLTK_INCLUDE_SEARCH_PATH ${FLTK_INCLUDE_SEARCH_PATH}
${FLTK_BIN_DIR}/../include ${FLTK_BIN_DIR}/..)
set(FLTK_LIBRARY_SEARCH_PATH ${FLTK_LIBRARY_SEARCH_PATH}
${FLTK_BIN_DIR}/../lib)
set(FLTK_WRAP_UI 1)
endif()
#
# Try to find FLTK include dir using fltk-config
#
if(UNIX)
# Use fltk-config to generate a list of possible include directories
find_program(FLTK_CONFIG_SCRIPT fltk-config PATHS ${FLTK_BIN_DIR})
if(FLTK_CONFIG_SCRIPT)
if(NOT FLTK_INCLUDE_DIR)
exec_program(${FLTK_CONFIG_SCRIPT} ARGS --cxxflags OUTPUT_VARIABLE FLTK_CXXFLAGS)
if(FLTK_CXXFLAGS)
string(REGEX MATCHALL "-I[^ ]*" _fltk_temp_dirs ${FLTK_CXXFLAGS})
string(REPLACE "-I" "" _fltk_temp_dirs "${_fltk_temp_dirs}")
foreach(_dir ${_fltk_temp_dirs})
string(STRIP ${_dir} _output)
list(APPEND _FLTK_POSSIBLE_INCLUDE_DIRS ${_output})
endforeach()
endif()
endif()
endif()
endif()
list(APPEND FLTK_INCLUDE_SEARCH_PATH ${_FLTK_POSSIBLE_INCLUDE_DIRS})
find_path(FLTK_INCLUDE_DIR
NAMES FL/Fl.h FL/Fl.H # fltk 1.1.9 has Fl.H (#8376)
PATH_SUFFIXES fltk fltk/include
PATHS ${FLTK_INCLUDE_SEARCH_PATH})
#
# Try to find FLTK library
if(UNIX)
if(FLTK_CONFIG_SCRIPT)
exec_program(${FLTK_CONFIG_SCRIPT} ARGS --libs OUTPUT_VARIABLE _FLTK_POSSIBLE_LIBS)
if(_FLTK_POSSIBLE_LIBS)
get_filename_component(_FLTK_POSSIBLE_LIBRARY_DIR ${_FLTK_POSSIBLE_LIBS} PATH)
endif()
endif()
endif()
list(APPEND FLTK_LIBRARY_SEARCH_PATH ${FLTK_INCLUDE_DIR}/lib ${_FLTK_POSSIBLE_LIBRARY_DIR})
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
# Allow libraries to be set manually
if(NOT FLTK_BASE_LIBRARY)
find_library(FLTK_BASE_LIBRARY_RELEASE NAMES fltk PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
find_library(FLTK_BASE_LIBRARY_DEBUG NAMES fltkd PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
select_library_configurations(FLTK_BASE)
endif()
if(NOT FLTK_GL_LIBRARY)
find_library(FLTK_GL_LIBRARY_RELEASE NAMES fltkgl fltk_gl PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
find_library(FLTK_GL_LIBRARY_DEBUG NAMES fltkgld fltk_gld PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
select_library_configurations(FLTK_GL)
endif()
if(NOT FLTK_FORMS_LIBRARY)
find_library(FLTK_FORMS_LIBRARY_RELEASE NAMES fltkforms fltk_forms PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
find_library(FLTK_FORMS_LIBRARY_DEBUG NAMES fltkformsd fltk_formsd PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
select_library_configurations(FLTK_FORMS)
endif()
if(NOT FLTK_IMAGES_LIBRARY)
find_library(FLTK_IMAGES_LIBRARY_RELEASE NAMES fltkimages fltk_images PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
find_library(FLTK_IMAGES_LIBRARY_DEBUG NAMES fltkimagesd fltk_imagesd PATHS ${FLTK_LIBRARY_SEARCH_PATH} PATH_SUFFIXES fltk fltk/lib)
select_library_configurations(FLTK_IMAGES)
endif()
# Find the extra libraries needed for the fltk_images library.
if(UNIX)
if(FLTK_CONFIG_SCRIPT)
exec_program(${FLTK_CONFIG_SCRIPT} ARGS --use-images --ldflags
OUTPUT_VARIABLE FLTK_IMAGES_LDFLAGS)
set(FLTK_LIBS_EXTRACT_REGEX ".*-lfltk_images (.*) -lfltk.*")
if("${FLTK_IMAGES_LDFLAGS}" MATCHES "${FLTK_LIBS_EXTRACT_REGEX}")
string(REGEX REPLACE " +" ";" FLTK_IMAGES_LIBS "${CMAKE_MATCH_1}")
# The EXEC_PROGRAM will not be inherited into subdirectories from
# the file that originally included this module. Save the answer.
set(FLTK_IMAGES_LIBS "${FLTK_IMAGES_LIBS}" CACHE INTERNAL
"Extra libraries for fltk_images library.")
endif()
endif()
endif()
endif()
# Append all of the required libraries together (by default, everything)
set(FLTK_LIBRARIES)
if(NOT FLTK_SKIP_IMAGES)
list(APPEND FLTK_LIBRARIES ${FLTK_IMAGES_LIBRARY})
endif()
if(NOT FLTK_SKIP_FORMS)
list(APPEND FLTK_LIBRARIES ${FLTK_FORMS_LIBRARY})
endif()
if(NOT FLTK_SKIP_OPENGL)
list(APPEND FLTK_LIBRARIES ${FLTK_GL_LIBRARY} ${OPENGL_gl_LIBRARY})
list(APPEND FLTK_INCLUDE_DIR ${OPENGL_INCLUDE_DIR})
list(REMOVE_DUPLICATES FLTK_INCLUDE_DIR)
endif()
list(APPEND FLTK_LIBRARIES ${FLTK_BASE_LIBRARY})
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
if(FLTK_SKIP_FLUID)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(FLTK DEFAULT_MSG FLTK_LIBRARIES FLTK_INCLUDE_DIR)
else()
FIND_PACKAGE_HANDLE_STANDARD_ARGS(FLTK DEFAULT_MSG FLTK_LIBRARIES FLTK_INCLUDE_DIR FLTK_FLUID_EXECUTABLE)
endif()
if(FLTK_FOUND)
if(APPLE)
set(FLTK_LIBRARIES ${FLTK_PLATFORM_DEPENDENT_LIBS} ${FLTK_LIBRARIES})
else()
set(FLTK_LIBRARIES ${FLTK_LIBRARIES} ${FLTK_PLATFORM_DEPENDENT_LIBS})
endif()
# The following deprecated settings are for compatibility with CMake 1.4
set (HAS_FLTK ${FLTK_FOUND})
set (FLTK_INCLUDE_PATH ${FLTK_INCLUDE_DIR})
set (FLTK_FLUID_EXE ${FLTK_FLUID_EXECUTABLE})
set (FLTK_LIBRARY ${FLTK_LIBRARIES})
endif()