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fltk/CMake/options.cmake
Albrecht Schlosser 52a853c39c Backport CMake and related stuff from 1.4 (master) 
- update formatting + documentation generation
- rename help-test.html to help_dialog.html
- update CMake files + Makefiles + related source files
- update fluid files + dependencies
2021-04-08 14:57:40 +02:00

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CMake
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#
# Main CMakeLists.txt to build the FLTK project using CMake (www.cmake.org)
# Written by Michael Surette
#
# Copyright 1998-2020 by Bill Spitzak and others.
#
# This library is free software. Distribution and use rights are outlined in
# the file "COPYING" which should have been included with this file. If this
# file is missing or damaged, see the license at:
#
# https://www.fltk.org/COPYING.php
#
# Please see the following page on how to report bugs and issues:
#
# https://www.fltk.org/bugs.php
#
set (DEBUG_OPTIONS_CMAKE 0)
if (DEBUG_OPTIONS_CMAKE)
message (STATUS "[** options.cmake **]")
fl_debug_var (WIN32)
fl_debug_var (FLTK_LDLIBS)
endif (DEBUG_OPTIONS_CMAKE)
#######################################################################
# options
#######################################################################
set (OPTION_OPTIM ""
CACHE STRING
"custom optimization flags"
)
add_definitions (${OPTION_OPTIM})
#######################################################################
set (OPTION_ARCHFLAGS ""
CACHE STRING
"custom architecture flags"
)
add_definitions (${OPTION_ARCHFLAGS})
#######################################################################
set (OPTION_ABI_VERSION ""
CACHE STRING
"FLTK ABI Version FL_ABI_VERSION: 1xxyy for 1.x.y (xx,yy with leading zero)"
)
set (FL_ABI_VERSION ${OPTION_ABI_VERSION})
#######################################################################
#######################################################################
if (UNIX)
option (OPTION_CREATE_LINKS "create backwards compatibility links" OFF)
list (APPEND FLTK_LDLIBS -lm)
endif (UNIX)
#######################################################################
if (APPLE)
option (OPTION_APPLE_X11 "use X11" OFF)
if (CMAKE_OSX_SYSROOT)
list (APPEND FLTK_CFLAGS "-isysroot ${CMAKE_OSX_SYSROOT}")
endif (CMAKE_OSX_SYSROOT)
endif (APPLE)
# find X11 libraries and headers
set (PATH_TO_XLIBS)
if ((NOT APPLE OR OPTION_APPLE_X11) AND NOT WIN32)
include (FindX11)
if (X11_FOUND)
set (USE_X11 1)
list (APPEND FLTK_LDLIBS -lX11)
if (X11_Xext_FOUND)
list (APPEND FLTK_LDLIBS -lXext)
endif (X11_Xext_FOUND)
get_filename_component (PATH_TO_XLIBS ${X11_X11_LIB} PATH)
endif (X11_FOUND)
endif ((NOT APPLE OR OPTION_APPLE_X11) AND NOT WIN32)
if (OPTION_APPLE_X11)
if (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0)) # a.k.a. macOS version ≥ 10.13
list (APPEND FLTK_CFLAGS "-D_LIBCPP_HAS_THREAD_API_PTHREAD")
endif (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0))
include_directories (AFTER SYSTEM /opt/X11/include/freetype2)
if (PATH_TO_XLIBS)
set (LDFLAGS "-L${PATH_TO_XLIBS} ${LDFLAGS}")
endif (PATH_TO_XLIBS)
if (X11_INCLUDE_DIR)
set (TEMP_INCLUDE_DIR ${X11_INCLUDE_DIR})
list (TRANSFORM TEMP_INCLUDE_DIR PREPEND "-I")
list (APPEND FLTK_CFLAGS "${TEMP_INCLUDE_DIR}")
endif (X11_INCLUDE_DIR)
endif (OPTION_APPLE_X11)
#######################################################################
option (OPTION_USE_POLL "use poll if available" OFF)
mark_as_advanced (OPTION_USE_POLL)
if (OPTION_USE_POLL)
CHECK_FUNCTION_EXISTS(poll USE_POLL)
endif (OPTION_USE_POLL)
#######################################################################
option (OPTION_BUILD_SHARED_LIBS
"Build shared libraries (in addition to static libraries)"
OFF
)
#######################################################################
option (OPTION_FILESYSTEM_SUPPORT "allow file system support" ON)
option (FLTK_BUILD_TEST "Build test/demo programs" ON)
option (FLTK_BUILD_EXAMPLES "Build example programs" OFF)
if (DEFINED OPTION_BUILD_EXAMPLES)
message (WARNING
"'OPTION_BUILD_EXAMPLES' is obsolete, please use 'FLTK_BUILD_TEST' instead.")
message (STATUS
"To remove this warning, please delete 'OPTION_BUILD_EXAMPLES' from the CMake cache")
endif (DEFINED OPTION_BUILD_EXAMPLES)
#######################################################################
if (DOXYGEN_FOUND)
option (OPTION_BUILD_HTML_DOCUMENTATION "build html docs" ON)
option (OPTION_INSTALL_HTML_DOCUMENTATION "install html docs" OFF)
option (OPTION_INCLUDE_DRIVER_DOCUMENTATION "include driver (developer) docs" OFF)
mark_as_advanced (OPTION_INCLUDE_DRIVER_DOCUMENTATION)
if (LATEX_FOUND)
option (OPTION_BUILD_PDF_DOCUMENTATION "build pdf docs" ON)
option (OPTION_INSTALL_PDF_DOCUMENTATION "install pdf docs" OFF)
endif (LATEX_FOUND)
endif (DOXYGEN_FOUND)
if (OPTION_BUILD_HTML_DOCUMENTATION OR OPTION_BUILD_PDF_DOCUMENTATION)
add_subdirectory (documentation)
endif (OPTION_BUILD_HTML_DOCUMENTATION OR OPTION_BUILD_PDF_DOCUMENTATION)
#######################################################################
# Include optional Cairo support
#######################################################################
option (OPTION_CAIRO "use lib Cairo" OFF)
option (OPTION_CAIROEXT
"use FLTK code instrumentation for Cairo extended use" OFF
)
set (FLTK_HAVE_CAIRO 0)
set (FLTK_USE_CAIRO 0)
if (OPTION_CAIRO OR OPTION_CAIROEXT)
pkg_search_module (PKG_CAIRO cairo)
# fl_debug_var (PKG_CAIRO_FOUND)
if (PKG_CAIRO_FOUND)
set (FLTK_HAVE_CAIRO 1)
if (OPTION_CAIROEXT)
set (FLTK_USE_CAIRO 1)
endif (OPTION_CAIROEXT)
add_subdirectory (cairo)
# fl_debug_var (PKG_CAIRO_INCLUDE_DIRS)
# fl_debug_var (PKG_CAIRO_CFLAGS)
# fl_debug_var (PKG_CAIRO_STATIC_CFLAGS)
# fl_debug_var (PKG_CAIRO_LIBRARIES)
# fl_debug_var (PKG_CAIRO_STATIC_LIBRARIES)
include_directories (${PKG_CAIRO_INCLUDE_DIRS})
# Cairo libs and flags for fltk-config
# Hint: use either PKG_CAIRO_* or PKG_CAIRO_STATIC_* variables to
# create the list of libraries used to link programs with cairo
# by running fltk-config --use-cairo --compile ...
# Currently we're using the non-STATIC variables to link cairo shared.
set (CAIROLIBS)
foreach (lib ${PKG_CAIRO_LIBRARIES})
list (APPEND CAIROLIBS "-l${lib}")
endforeach()
string (REPLACE ";" " " CAIROLIBS "${CAIROLIBS}")
string (REPLACE ";" " " CAIROFLAGS "${PKG_CAIRO_CFLAGS}")
# fl_debug_var (FLTK_LDLIBS)
# fl_debug_var (CAIROFLAGS)
# fl_debug_var (CAIROLIBS)
else ()
message (STATUS "*** Cairo was requested but not found - please check your cairo installation")
message (STATUS "*** or disable options OPTION_CAIRO and OPTION_CAIRO_EXT.")
message (FATAL_ERROR "*** Terminating: missing Cairo libs or headers.")
endif (PKG_CAIRO_FOUND)
endif (OPTION_CAIRO OR OPTION_CAIROEXT)
#######################################################################
option (OPTION_USE_SVG "read/write SVG files" ON)
if (OPTION_USE_SVG)
set (FLTK_USE_SVG 1)
endif (OPTION_USE_SVG)
#######################################################################
set (HAVE_GL LIB_GL OR LIB_MesaGL)
if (HAVE_GL)
option (OPTION_USE_GL "use OpenGL" ON)
endif (HAVE_GL)
if (OPTION_USE_GL)
if (OPTION_APPLE_X11)
set (OPENGL_FOUND TRUE)
set (OPENGL_LIBRARIES -L${PATH_TO_XLIBS} -lGLU -lGL)
unset(HAVE_GL_GLU_H CACHE)
find_file (HAVE_GL_GLU_H GL/glu.h PATHS ${X11_INCLUDE_DIR})
else()
include (FindOpenGL)
if (APPLE)
set (HAVE_GL_GLU_H ${HAVE_OPENGL_GLU_H})
endif (APPLE)
endif (OPTION_APPLE_X11)
else ()
set (OPENGL_FOUND FALSE)
endif (OPTION_USE_GL)
if (OPENGL_FOUND)
set (CMAKE_REQUIRED_INCLUDES ${OPENGL_INCLUDE_DIR}/GL)
# Set GLLIBS (used in fltk-config).
# We should probably deduct this from OPENGL_LIBRARIES but it turned
# out to be difficult since FindOpenGL seems to return different
# syntax depending on the platform (and maybe also CMake version).
# Hence we use the following code...
if (WIN32)
set (GLLIBS "-lglu32 -lopengl32")
elseif (APPLE AND NOT OPTION_APPLE_X11)
set (GLLIBS "-framework OpenGL")
else ()
set (GLLIBS "-lGLU -lGL")
endif (WIN32)
# check if function glXGetProcAddressARB exists
set (TEMP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set (CMAKE_REQUIRED_LIBRARIES ${OPENGL_LIBRARIES})
CHECK_FUNCTION_EXISTS (glXGetProcAddressARB HAVE_GLXGETPROCADDRESSARB)
set (CMAKE_REQUIRED_LIBRARIES ${TEMP_REQUIRED_LIBRARIES})
unset (TEMP_REQUIRED_LIBRARIES)
set (FLTK_GL_FOUND TRUE)
else ()
set (FLTK_GL_FOUND FALSE)
set (GLLIBS)
endif (OPENGL_FOUND)
#######################################################################
option (OPTION_LARGE_FILE "enable large file support" ON)
if (OPTION_LARGE_FILE)
if (NOT MSVC)
add_definitions (-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64)
list (APPEND FLTK_CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64)
endif (NOT MSVC)
endif (OPTION_LARGE_FILE)
#######################################################################
# Create an option whether we want to check for pthreads.
# We must not do it on Windows unless we run under Cygwin, since we
# always use native threads on Windows (even if libpthread is available).
# Note: HAVE_PTHREAD_H has already been determined in resources.cmake
# before this file is included (or set to 0 for WIN32).
if (WIN32 AND NOT CYGWIN)
# set (HAVE_PTHREAD_H 0) # (see resources.cmake)
set (OPTION_USE_THREADS FALSE)
else ()
option (OPTION_USE_THREADS "use multi-threading with pthreads" ON)
endif (WIN32 AND NOT CYGWIN)
# initialize more variables
set (USE_THREADS 0)
set (HAVE_PTHREAD 0)
set (FLTK_PTHREADS_FOUND FALSE)
if (OPTION_USE_THREADS)
include (FindThreads)
if (CMAKE_HAVE_THREADS_LIBRARY)
add_definitions ("-D_THREAD_SAFE -D_REENTRANT")
set (USE_THREADS 1)
set (FLTK_THREADS_FOUND TRUE)
endif (CMAKE_HAVE_THREADS_LIBRARY)
if (CMAKE_USE_PTHREADS_INIT AND NOT WIN32)
set (HAVE_PTHREAD 1)
if (NOT APPLE)
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pthread")
endif (NOT APPLE)
list (APPEND FLTK_LDLIBS -lpthread)
list (APPEND FLTK_CFLAGS -D_THREAD_SAFE -D_REENTRANT)
set (FLTK_PTHREADS_FOUND TRUE)
else()
set (HAVE_PTHREAD 0)
set (HAVE_PTHREAD_H 0)
set (FLTK_PTHREADS_FOUND FALSE)
endif (CMAKE_USE_PTHREADS_INIT AND NOT WIN32)
else (OPTION_USE_THREADS)
set (HAVE_PTHREAD_H 0)
endif (OPTION_USE_THREADS)
set (debug_threads 0) # set to 1 to show debug info
if (debug_threads)
message ("")
message (STATUS "options.cmake: set debug_threads to 0 to disable the following info:")
fl_debug_var(OPTION_USE_THREADS)
fl_debug_var(HAVE_PTHREAD)
fl_debug_var(HAVE_PTHREAD_H)
fl_debug_var(FLTK_THREADS_FOUND)
fl_debug_var(CMAKE_EXE_LINKER_FLAGS)
message (STATUS "options.cmake: end of debug_threads info.")
endif (debug_threads)
unset (debug_threads)
#######################################################################
option (OPTION_USE_SYSTEM_ZLIB "use system zlib" ON)
if (OPTION_USE_SYSTEM_ZLIB)
include (FindZLIB)
endif (OPTION_USE_SYSTEM_ZLIB)
if (ZLIB_FOUND)
set (FLTK_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
include_directories (${ZLIB_INCLUDE_DIRS})
set (FLTK_BUILTIN_ZLIB_FOUND FALSE)
else()
if (OPTION_USE_SYSTEM_ZLIB)
message (STATUS "cannot find system zlib library - using built-in\n")
endif (OPTION_USE_SYSTEM_ZLIB)
add_subdirectory (zlib)
set (FLTK_ZLIB_LIBRARIES fltk_z)
set (ZLIB_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/zlib)
include_directories (${CMAKE_CURRENT_SOURCE_DIR}/zlib)
set (FLTK_BUILTIN_ZLIB_FOUND TRUE)
endif (ZLIB_FOUND)
set (HAVE_LIBZ 1)
#######################################################################
if (APPLE)
option (OPTION_USE_SYSTEM_LIBJPEG "use system libjpeg" OFF)
else ()
option (OPTION_USE_SYSTEM_LIBJPEG "use system libjpeg" ON)
endif (APPLE)
if (OPTION_USE_SYSTEM_LIBJPEG)
include (FindJPEG)
endif (OPTION_USE_SYSTEM_LIBJPEG)
if (JPEG_FOUND)
set (FLTK_JPEG_LIBRARIES ${JPEG_LIBRARIES})
include_directories (${JPEG_INCLUDE_DIR})
set (FLTK_BUILTIN_JPEG_FOUND FALSE)
else ()
if (OPTION_USE_SYSTEM_LIBJPEG)
message (STATUS "cannot find system jpeg library - using built-in\n")
endif (OPTION_USE_SYSTEM_LIBJPEG)
add_subdirectory (jpeg)
set (FLTK_JPEG_LIBRARIES fltk_jpeg)
include_directories (${CMAKE_CURRENT_SOURCE_DIR}/jpeg)
set (FLTK_BUILTIN_JPEG_FOUND TRUE)
endif (JPEG_FOUND)
set (HAVE_LIBJPEG 1)
#######################################################################
if (APPLE)
option (OPTION_USE_SYSTEM_LIBPNG "use system libpng" OFF)
else ()
option (OPTION_USE_SYSTEM_LIBPNG "use system libpng" ON)
endif (APPLE)
if (OPTION_USE_SYSTEM_LIBPNG)
include (FindPNG)
endif (OPTION_USE_SYSTEM_LIBPNG)
if (PNG_FOUND)
set (FLTK_PNG_LIBRARIES ${PNG_LIBRARIES})
include_directories (${PNG_INCLUDE_DIR})
add_definitions (${PNG_DEFINITIONS})
set (FLTK_BUILTIN_PNG_FOUND FALSE)
else()
if (OPTION_USE_SYSTEM_LIBPNG)
message (STATUS "cannot find system png library - using built-in\n")
endif (OPTION_USE_SYSTEM_LIBPNG)
add_subdirectory (png)
set (FLTK_PNG_LIBRARIES fltk_png)
set (HAVE_PNG_H 1)
set (HAVE_PNG_GET_VALID 1)
set (HAVE_PNG_SET_TRNS_TO_ALPHA 1)
include_directories (${CMAKE_CURRENT_SOURCE_DIR}/png)
set (FLTK_BUILTIN_PNG_FOUND TRUE)
endif (PNG_FOUND)
set (HAVE_LIBPNG 1)
#######################################################################
if (X11_Xinerama_FOUND)
option (OPTION_USE_XINERAMA "use lib Xinerama" ON)
endif (X11_Xinerama_FOUND)
if (OPTION_USE_XINERAMA)
set (HAVE_XINERAMA ${X11_Xinerama_FOUND})
include_directories (${X11_Xinerama_INCLUDE_PATH})
list (APPEND FLTK_LDLIBS -lXinerama)
set (FLTK_XINERAMA_FOUND TRUE)
else()
set (FLTK_XINERAMA_FOUND FALSE)
endif (OPTION_USE_XINERAMA)
#######################################################################
if (X11_Xfixes_FOUND)
option (OPTION_USE_XFIXES "use lib Xfixes" ON)
endif (X11_Xfixes_FOUND)
if (OPTION_USE_XFIXES)
set (HAVE_XFIXES ${X11_Xfixes_FOUND})
include_directories (${X11_Xfixes_INCLUDE_PATH})
list (APPEND FLTK_LDLIBS -lXfixes)
set (FLTK_XFIXES_FOUND TRUE)
else()
set (FLTK_XFIXES_FOUND FALSE)
endif (OPTION_USE_XFIXES)
#######################################################################
if (X11_Xcursor_FOUND)
option (OPTION_USE_XCURSOR "use lib Xcursor" ON)
endif (X11_Xcursor_FOUND)
if (OPTION_USE_XCURSOR)
set (HAVE_XCURSOR ${X11_Xcursor_FOUND})
include_directories (${X11_Xcursor_INCLUDE_PATH})
list (APPEND FLTK_LDLIBS -lXcursor)
set (FLTK_XCURSOR_FOUND TRUE)
else()
set (FLTK_XCURSOR_FOUND FALSE)
endif (OPTION_USE_XCURSOR)
#######################################################################
if (X11_Xft_FOUND)
option (OPTION_USE_XFT "use lib Xft" ON)
endif (X11_Xft_FOUND)
if (OPTION_USE_XFT)
set (USE_XFT X11_Xft_FOUND)
list (APPEND FLTK_LDLIBS -lXft)
set (FLTK_XFT_FOUND TRUE)
if (APPLE AND OPTION_APPLE_X11)
find_library(LIB_fontconfig fontconfig "/opt/X11/lib")
endif (APPLE AND OPTION_APPLE_X11)
else()
set (FLTK_XFT_FOUND FALSE)
endif (OPTION_USE_XFT)
#######################################################################
if (X11_Xrender_FOUND)
option (OPTION_USE_XRENDER "use lib Xrender" ON)
endif (X11_Xrender_FOUND)
if (OPTION_USE_XRENDER)
set (HAVE_XRENDER ${X11_Xrender_FOUND})
if (HAVE_XRENDER)
include_directories (${X11_Xrender_INCLUDE_PATH})
list (APPEND FLTK_LDLIBS -lXrender)
set (FLTK_XRENDER_FOUND TRUE)
else(HAVE_XRENDER)
set (FLTK_XRENDER_FOUND FALSE)
endif (HAVE_XRENDER)
else(OPTION_USE_XRENDER)
set (FLTK_XRENDER_FOUND FALSE)
endif (OPTION_USE_XRENDER)
#######################################################################
if (X11_FOUND)
option (OPTION_USE_XDBE "use lib Xdbe" ON)
endif (X11_FOUND)
if (OPTION_USE_XDBE AND HAVE_XDBE_H)
set (HAVE_XDBE 1)
set (FLTK_XDBE_FOUND TRUE)
else()
set (FLTK_XDBE_FOUND FALSE)
endif (OPTION_USE_XDBE AND HAVE_XDBE_H)
#######################################################################
set (FL_CFG_NO_FILESYSTEM_SUPPORT TRUE)
if (OPTION_FILESYSTEM_SUPPORT)
set (FL_CFG_NO_FILESYSTEM_SUPPORT FALSE)
endif (OPTION_FILESYSTEM_SUPPORT)
#######################################################################
#######################################################################
option (OPTION_CREATE_ANDROID_STUDIO_IDE "create files needed to compile FLTK for Android" OFF)
#######################################################################
#######################################################################
option (CMAKE_SUPPRESS_REGENERATION "suppress rules to re-run CMake on rebuild" OFF)
mark_as_advanced (CMAKE_SUPPRESS_REGENERATION)
#######################################################################
# Debugging ...
if (DEBUG_OPTIONS_CMAKE)
message (STATUS "") # empty line
fl_debug_var (WIN32)
fl_debug_var (LIBS)
fl_debug_var (GLLIBS)
fl_debug_var (FLTK_LDLIBS)
fl_debug_var (OPENGL_FOUND)
fl_debug_var (OPENGL_INCLUDE_DIR)
fl_debug_var (OPENGL_LIBRARIES)
message ("--- X11 ---")
fl_debug_var (X11_FOUND)
fl_debug_var (X11_INCLUDE_DIR)
fl_debug_var (X11_LIBRARIES)
fl_debug_var (X11_X11_LIB)
fl_debug_var (X11_X11_INCLUDE_PATH)
fl_debug_var (X11_Xft_INCLUDE_PATH)
fl_debug_var (X11_Xft_LIB)
fl_debug_var (X11_Xft_FOUND)
fl_debug_var (PATH_TO_XLIBS)
message (STATUS "[** end of options.cmake **]")
endif (DEBUG_OPTIONS_CMAKE)
unset (DEBUG_OPTIONS_CMAKE)
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