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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 CMake minimum version (must be before `project()`
#######################################################################
# Note: previous (1.3.5) minimum version
# cmake_minimum_required (VERSION 2.6.3)
# Note: minimum CMake version required by GNUInstallDirs
# cmake_minimum_required (VERSION 2.8.4)
# Minimum CMake version required by FLTK 1.4 (06/2020, work in progress)
cmake_minimum_required (VERSION 3.2.3 FATAL_ERROR)
# Use "legacy mode" of FindOpenGL (avoid CMake developer warning)
# Note: we're using FindOpenGL with `OPENGL_LIBRARIES` and not (yet)
# the `OpenGL::GL` target. May be changed in the future.
# See https://cmake.org/cmake/help/latest/policy/CMP0072.html
if (POLICY CMP0072)
cmake_policy (SET CMP0072 OLD)
endif ()
#######################################################################
# define the FLTK project and version
#######################################################################
project (FLTK VERSION 1.4.0)
#######################################################################
# include macro definitions of generally used macros
#######################################################################
include (CMake/fl_debug_var.cmake)
include (CMake/fl_add_library.cmake)
if (false)
fl_debug_var (FLTK_VERSION_MAJOR)
fl_debug_var (FLTK_VERSION_MINOR)
fl_debug_var (FLTK_VERSION_PATCH)
fl_debug_var (FLTK_VERSION)
endif (false)
#######################################################################
# basic setup
#######################################################################
include (CMake/setup.cmake)
#######################################################################
# check for headers, libraries and functions
#######################################################################
include (CMake/resources.cmake)
#######################################################################
# options
#######################################################################
include (CMake/options.cmake)
#######################################################################
# Android Studio setup
#######################################################################
if (OPTION_CREATE_ANDROID_STUDIO_IDE)
include (CMake/android.cmake)
endif (OPTION_CREATE_ANDROID_STUDIO_IDE)
#######################################################################
# print (debug) several build variables and options
#######################################################################
set (debug_build 0) # set to 1 to show debug info
if (debug_build)
message ("")
message (STATUS "${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt: set debug_build to 0 to disable the following info:")
fl_debug_var (WIN32)
fl_debug_var (MINGW)
fl_debug_var (CYGWIN)
fl_debug_var (MSVC)
fl_debug_var (UNIX)
fl_debug_var (APPLE)
fl_debug_var (ANDROID)
fl_debug_var (CMAKE_BUILD_TYPE)
fl_debug_var (CMAKE_SIZEOF_VOID_P)
fl_debug_var (OPTION_OPTIM)
fl_debug_var (CMAKE_C_FLAGS)
fl_debug_var (CMAKE_CXX_FLAGS)
fl_debug_var (CMAKE_EXE_LINKER_FLAGS)
message (STATUS "${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt: end of debug_build info.")
endif (debug_build)
unset (debug_build)
#######################################################################
# variables shared by export and install
# export.cmake creates configuration files for direct use in a built but uninstalled FLTK
# install.cmake creates these files for an installed FLTK
# these two would only differ in paths, so common variables are set here
#######################################################################
include (CMake/variables.cmake)
#######################################################################
# final config and export
#######################################################################
include (CMake/export.cmake)
configure_file (
${CMAKE_CURRENT_SOURCE_DIR}/abi-version.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/FL/abi-version.h
@ONLY
)
#######################################################################
# options to build test/demo and example programs
#######################################################################
if (FLTK_BUILD_TEST)
add_subdirectory (test)
endif (FLTK_BUILD_TEST)
if (FLTK_BUILD_EXAMPLES)
add_subdirectory (examples)
endif (FLTK_BUILD_EXAMPLES)
#######################################################################
# Android Studio wrapup
#######################################################################
if (OPTION_CREATE_ANDROID_STUDIO_IDE)
CREATE_ANDROID_IDE_WRAPUP()
endif (OPTION_CREATE_ANDROID_STUDIO_IDE)
#######################################################################
# installation
#######################################################################
include (CMake/install.cmake)
#######################################################################
# Generate Library Export Headers *** EXPERIMENTAL *** WIP ***
#######################################################################
# Enable (1) or disable (0) generation of experimental headers (WIP)
set (GENERATE_EXPORT_HEADERS 0)
if (OPTION_BUILD_SHARED_LIBS AND GENERATE_EXPORT_HEADERS)
include (GenerateExportHeader)
generate_export_header (fltk_SHARED
BASE_NAME fl
EXPORT_FILE_NAME FL/fltk_export.h
STATIC_DEFINE FL_STATIC_LIB
)
if (NOT MSVC)
# Visual Studio builds only one shared lib (DLL)
generate_export_header (fltk_images_SHARED
BASE_NAME fl_images
EXPORT_FILE_NAME FL/fltk_images_export.h
STATIC_DEFINE FL_STATIC_LIB
)
generate_export_header (fltk_forms_SHARED
BASE_NAME fl_forms
EXPORT_FILE_NAME FL/fltk_forms_export.h
STATIC_DEFINE FL_STATIC_LIB
)
generate_export_header (fltk_gl_SHARED
BASE_NAME fl_gl
EXPORT_FILE_NAME FL/fltk_gl_export.h
STATIC_DEFINE FL_STATIC_LIB
)
endif (NOT MSVC)
endif (OPTION_BUILD_SHARED_LIBS AND GENERATE_EXPORT_HEADERS)
#######################################################################
# Output Configuration Summary
#######################################################################
include (FeatureSummary)
message ("")
feature_summary (WHAT ALL DESCRIPTION "Configuration Summary --\n")
message (STATUS "Static libraries will be written to ${CMAKE_CURRENT_BINARY_DIR}/lib")
if (OPTION_BUILD_SHARED_LIBS)
message (STATUS "Shared libraries will be written to ${CMAKE_CURRENT_BINARY_DIR}/lib")
else ()
message (STATUS "Shared libraries will not be built (set OPTION_BUILD_SHARED_LIBS=ON to build)")
endif ()
if (FLTK_BUILD_TEST)
message (STATUS "Test programs will be written to ${CMAKE_CURRENT_BINARY_DIR}/bin/test")
endif ()
if (FLTK_BUILD_EXAMPLES)
message (STATUS "Example programs will be written to ${CMAKE_CURRENT_BINARY_DIR}/bin/examples")
else ()
message (STATUS "Example programs will not be built (set FLTK_BUILD_EXAMPLES=ON to build)")
endif ()
message ("")
message (STATUS "End of Configuration Summary --\n")
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