gre-ilya/fltk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
16f9e2e344
fltk/CMake/resources.cmake
Albrecht Schlosser 74187844a2 CMake/MSVC: remove confusing recommendation to rerun CMake 
... if GL or locale headers are not found. These headers will be
  resolved by the Visual Studio SDK (backported from 1.4).

Also improve finding the GLEW library on Windows (named 'glew32')
  (backported from 1.4).
2023-12-07 19:49:31 +01:00

255 lines
8.5 KiB
CMake
Raw Blame History

#
# Resource definitions to build the FLTK project using CMake (www.cmake.org)
# Written by Michael Surette
#
# Copyright 1998-2023 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
#
#######################################################################
# check for headers, libraries and functions
#######################################################################
# If CMAKE_REQUIRED_QUIET is 1 (default) the search is mostly quiet,
# if it is 0 (or not defined) check_include_files() is more verbose
# and the result of the search is logged with fl_debug_var().
# This is useful for debugging.
set (CMAKE_REQUIRED_QUIET 1)
include (CheckIncludeFiles)
macro (fl_find_header VAR HEADER)
check_include_files ("${HEADER}" ${VAR})
if (NOT CMAKE_REQUIRED_QUIET)
fl_debug_var (${VAR})
endif (NOT CMAKE_REQUIRED_QUIET)
endmacro (fl_find_header)
#######################################################################
# Include FindPkgConfig for later use of pkg-config
#######################################################################
include (FindPkgConfig)
# fl_debug_var (PKG_CONFIG_FOUND)
# fl_debug_var (PKG_CONFIG_EXECUTABLE)
# fl_debug_var (PKG_CONFIG_VERSION_STRING)
#######################################################################
# Find header files...
#######################################################################
fl_find_header (HAVE_ALSA_ASOUNDLIB_H alsa/asoundlib.h)
fl_find_header (HAVE_DLFCN_H dlfcn.h)
fl_find_header (HAVE_GL_GLU_H GL/glu.h)
fl_find_header (HAVE_LIBPNG_PNG_H libpng/png.h)
fl_find_header (HAVE_LOCALE_H locale.h)
fl_find_header (HAVE_OPENGL_GLU_H OpenGL/glu.h)
fl_find_header (HAVE_PNG_H png.h)
fl_find_header (HAVE_STDIO_H stdio.h)
fl_find_header (HAVE_STRINGS_H strings.h)
fl_find_header (HAVE_SYS_SELECT_H sys/select.h)
fl_find_header (HAVE_SYS_STDTYPES_H sys/stdtypes.h)
fl_find_header (HAVE_X11_XREGION_H "X11/Xlib.h;X11/Xregion.h")
fl_find_header (HAVE_XDBE_H "X11/Xlib.h;X11/extensions/Xdbe.h")
if (WIN32 AND NOT CYGWIN)
# we don't use pthreads on Windows (except for Cygwin, see options.cmake)
set (HAVE_PTHREAD_H 0)
else ()
fl_find_header (HAVE_PTHREAD_H pthread.h)
endif (WIN32 AND NOT CYGWIN)
# Special case for Microsoft Visual Studio generator (MSVC):
#
# The header files <GL/glu.h> and <locale.h> are located in the SDK's
# for Visual Studio. If CMake is invoked from a desktop icon or the Windows
# menu it doesn't have the correct paths to find these header files.
# The CMake folks recommend not to search for these files at all, because
# they must always be there, but we do anyway.
# If we don't find them we issue a warning and continue anyway.
#
# Note: these cache variables can only be seen in "advanced" mode.
if (MSVC)
if (NOT HAVE_GL_GLU_H)
message (STATUS "Info: Header file GL/glu.h was not found. Continuing...")
set (HAVE_GL_GLU_H 1)
endif (NOT HAVE_GL_GLU_H)
if (NOT HAVE_LOCALE_H)
message (STATUS "Info: Header file locale.h was not found. Continuing...")
set (HAVE_LOCALE_H 1)
endif (NOT HAVE_LOCALE_H)
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.
fl_find_header (HAVE_DIRENT_H dirent.h)
if (NOT HAVE_DIRENT_H)
fl_find_header (HAVE_SYS_NDIR_H sys/ndir.h)
if (NOT HAVE_SYS_NDIR_H)
fl_find_header (HAVE_SYS_DIR_H sys/dir.h)
if (NOT HAVE_SYS_DIR_H)
fl_find_header (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_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)
#----------------------------------------------------------------------
# The following code is used to find the include path for freetype
# headers to be able to #include <ft2build.h> in Xft.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_dl dl)
if (NOT APPLE)
find_library (LIB_fontconfig fontconfig)
endif (NOT APPLE)
find_library (LIB_freetype freetype)
find_library (LIB_GL GL)
find_library (LIB_MesaGL MesaGL)
find_library (LIB_GLEW NAMES GLEW glew32)
find_library (LIB_jpeg jpeg)
find_library (LIB_png png)
find_library (LIB_zlib z)
mark_as_advanced (LIB_dl LIB_fontconfig LIB_freetype)
mark_as_advanced (LIB_GL LIB_MesaGL LIB_GLEW)
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
${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/CMake/posixScandir.cxx
)
if (V)
message (STATUS "${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}")
# Cleanup: unset local variables
unset (CMAKE_REQUIRED_QUIET)
Reference in New Issue View Git Blame Copy Permalink