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#
# "$Id$"
#
# Main CMakeLists.txt to build the FLTK project using CMake (www.cmake.org)
# Written by Michael Surette
#
# Copyright 1998-2015 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:
#
# http://www.fltk.org/COPYING.php
#
# Please report all bugs and problems on the following page:
#
# http://www.fltk.org/str.php
#
#######################################################################
# check for headers, libraries and functions
#######################################################################
# headers
find_file(HAVE_ALSA_ASOUNDLIB_H alsa/asoundlib.h)
find_file(HAVE_DLFCN_H dlfcn.h)
find_file(HAVE_FREETYPE_H freetype.h PATH_SUFFIXES freetype2 freetype2/freetype)
find_file(HAVE_GL_GL_H GL/gl.h)
find_file(HAVE_GL_GLU_H GL/glu.h)
find_file(HAVE_LIBPNG_PNG_H libpng/png.h)
find_file(HAVE_LOCALE_H locale.h)
find_file(HAVE_OPENGL_GLU_H OpenGL/glu.h)
find_file(HAVE_PNG_H png.h)
find_file(HAVE_PTHREAD_H pthread.h)
find_file(HAVE_STDIO_H stdio.h)
find_file(HAVE_STRINGS_H strings.h)
find_file(HAVE_SYS_SELECT_H sys/select.h)
find_file(HAVE_SYS_STDTYPES_H sys/stdtypes.h)
find_file(HAVE_X11_XREGION_H X11/Xregion.h)
find_path(HAVE_XDBE_H Xdbe.h PATH_SUFFIXES X11/extensions extensions)
if (MSVC)
message(STATUS "Note: The following three headers should all be found!")
message(STATUS "HAVE_GL_GL_H = '${HAVE_GL_GL_H}'")
message(STATUS "HAVE_GL_GLU_H = '${HAVE_GL_GLU_H}'")
message(STATUS "HAVE_LOCALE_H = '${HAVE_LOCALE_H}'")
message(STATUS "If one of these headers was not found, run cmake-gui ...")
message(STATUS "... again from a Visual Studio developer command prompt!")
endif (MSVC)
# Simulate the behavior of autoconf macro AC_HEADER_DIRENT, see:
# https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Particular-Headers.html
# "Check for the following header files. For the first one that is found
# and defines ‘DIR’, define the listed C preprocessor macro ..."
#
# Note: we don't check if it really defines 'DIR', but we stop processing
# once we found the first suitable header file.
find_file(HAVE_DIRENT_H dirent.h)
if(NOT HAVE_DIRENT_H)
find_file(HAVE_SYS_NDIR_H sys/ndir.h)
if(NOT HAVE_SYS_NDIR_H)
find_file(HAVE_SYS_DIR_H sys/dir.h)
if(NOT HAVE_SYS_DIR_H)
find_file(HAVE_NDIR_H ndir.h)
endif(NOT HAVE_SYS_DIR_H)
endif(NOT HAVE_SYS_NDIR_H)
endif(NOT HAVE_DIRENT_H)
mark_as_advanced(HAVE_ALSA_ASOUNDLIB_H HAVE_DIRENT_H HAVE_DLFCN_H)
mark_as_advanced(HAVE_FREETYPE_H HAVE_GL_GL_H HAVE_GL_GLU_H)
mark_as_advanced(HAVE_LIBPNG_PNG_H HAVE_LOCALE_H HAVE_NDIR_H)
mark_as_advanced(HAVE_OPENGL_GLU_H HAVE_PNG_H HAVE_PTHREAD_H)
mark_as_advanced(HAVE_STDIO_H HAVE_STRINGS_H HAVE_SYS_DIR_H)
mark_as_advanced(HAVE_SYS_NDIR_H HAVE_SYS_SELECT_H)
mark_as_advanced(HAVE_SYS_STDTYPES_H HAVE_XDBE_H)
mark_as_advanced(HAVE_X11_XREGION_H)
# where to find freetype headers
find_path(FREETYPE_PATH freetype.h PATH_SUFFIXES freetype2)
find_path(FREETYPE_PATH freetype/freetype.h PATH_SUFFIXES freetype2)
if(FREETYPE_PATH)
include_directories(${FREETYPE_PATH})
endif(FREETYPE_PATH)
mark_as_advanced(FREETYPE_PATH)
#######################################################################
# libraries
find_library(LIB_CAIRO cairo)
find_library(LIB_dl dl)
find_library(LIB_fontconfig fontconfig)
find_library(LIB_freetype freetype)
find_library(LIB_GL GL)
find_library(LIB_MesaGL MesaGL)
find_library(LIB_jpeg jpeg)
find_library(LIB_png png)
find_library(LIB_zlib z)
mark_as_advanced(LIB_CAIRO LIB_dl LIB_fontconfig LIB_freetype)
mark_as_advanced(LIB_GL LIB_MesaGL)
mark_as_advanced(LIB_jpeg LIB_png LIB_zlib)
#######################################################################
# functions
include(CheckFunctionExists)
# save CMAKE_REQUIRED_LIBRARIES (is this really necessary ?)
if(DEFINED CMAKE_REQUIRED_LIBRARIES)
set(SAVED_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
else(DEFINED CMAKE_REQUIRED_LIBRARIES)
unset(SAVED_REQUIRED_LIBRARIES)
endif(DEFINED CMAKE_REQUIRED_LIBRARIES)
set(CMAKE_REQUIRED_LIBRARIES)
if(HAVE_DLFCN_H)
set(HAVE_DLFCN_H 1)
endif(HAVE_DLFCN_H)
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_DL_LIBS})
CHECK_FUNCTION_EXISTS(dlsym HAVE_DLSYM)
set(CMAKE_REQUIRED_LIBRARIES)
CHECK_FUNCTION_EXISTS(localeconv HAVE_LOCALECONV)
if(LIB_png)
set(CMAKE_REQUIRED_LIBRARIES ${LIB_png})
CHECK_FUNCTION_EXISTS(png_get_valid HAVE_PNG_GET_VALID)
CHECK_FUNCTION_EXISTS(png_set_tRNS_to_alpha HAVE_PNG_SET_TRNS_TO_ALPHA)
set(CMAKE_REQUIRED_LIBRARIES)
endif(LIB_png)
CHECK_FUNCTION_EXISTS(scandir HAVE_SCANDIR)
CHECK_FUNCTION_EXISTS(snprintf HAVE_SNPRINTF)
# not really true but we convert strcasecmp calls to _stricmp calls in flstring.h
if(MSVC)
set(HAVE_STRCASECMP 1)
endif(MSVC)
CHECK_FUNCTION_EXISTS(strcasecmp HAVE_STRCASECMP)
CHECK_FUNCTION_EXISTS(strlcat HAVE_STRLCAT)
CHECK_FUNCTION_EXISTS(strlcpy HAVE_STRLCPY)
CHECK_FUNCTION_EXISTS(vsnprintf HAVE_VSNPRINTF)
if(HAVE_SCANDIR AND NOT HAVE_SCANDIR_POSIX)
set(MSG "POSIX compatible scandir")
message(STATUS "Looking for ${MSG}")
try_compile(V
${FLTK_BINARY_DIR}
${FLTK_SOURCE_DIR}/CMake/posixScandir.cxx
)
if(V)
message(STATUS "${MSG} - found")
set(HAVE_SCANDIR_POSIX 1 CACHE INTERNAL "")
else()
message(STATUS "${MSG} - not found")
set(HAVE_SCANDIR_POSIX HAVE_SCANDIR_POSIX-NOTFOUND)
endif(V)
endif(HAVE_SCANDIR AND NOT HAVE_SCANDIR_POSIX)
mark_as_advanced(HAVE_SCANDIR_POSIX)
# restore CMAKE_REQUIRED_LIBRARIES (is this really necessary ?)
if(DEFINED SAVED_REQUIRED_LIBRARIES)
set(CMAKE_REQUIRED_LIBRARIES ${SAVED_REQUIRED_LIBRARIES})
unset(SAVED_REQUIRED_LIBRARIES)
else(DEFINED SAVED_REQUIRED_LIBRARIES)
unset(CMAKE_REQUIRED_LIBRARIES)
endif(DEFINED SAVED_REQUIRED_LIBRARIES)
#######################################################################
# packages
# Doxygen: necessary for HTML and PDF docs
find_package(Doxygen)
# LaTex: necessary for PDF docs (note: FindLATEX doesn't return LATEX_FOUND)
# Note: we only check existence of `latex' (LATEX_COMPILER), hence
# building the pdf docs may still fail because of other missing tools.
set (LATEX_FOUND)
if (DOXYGEN_FOUND)
find_package(LATEX)
if (LATEX_COMPILER AND NOT LATEX_FOUND)
set(LATEX_FOUND YES)
endif (LATEX_COMPILER AND NOT LATEX_FOUND)
endif (DOXYGEN_FOUND)
# message("Doxygen found : ${DOXYGEN_FOUND}")
# message("LaTex found : ${LATEX_FOUND}")
# message("LaTex Compiler : ${LATEX_COMPILER}")
#
# End of "$Id$".
#
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