# # Resource definitions to build the FLTK project using CMake (www.cmake.org) # Written by Michael Surette # # Copyright 1998-2021 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_LOCALE_H locale.h) fl_find_header (HAVE_OPENGL_GLU_H OpenGL/glu.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") 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) # Do we have PTHREAD_MUTEX_RECURSIVE ? if (HAVE_PTHREAD_H) try_compile(HAVE_PTHREAD_MUTEX_RECURSIVE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/CMake/pthread_mutex_recursive.c ) else () set (HAVE_PTHREAD_MUTEX_RECURSIVE 0) endif () # Special case for Microsoft Visual Studio generator (MSVC): # # The header files and 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_OPENGL_GLU_H) mark_as_advanced (HAVE_LOCALE_H HAVE_NDIR_H) mark_as_advanced (HAVE_PTHREAD_H HAVE_PTHREAD_MUTEX_RECURSIVE) 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) 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 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) OR OPTION_APPLE_X11) find_library (LIB_fontconfig fontconfig) endif ((NOT APPLE) OR OPTION_APPLE_X11) 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)