3fb66056d6
Although CMake uses previously undefined variables like empty strings it could happen that variables set in the calling context by other projects initialized some variables with unexpected values. Example: FLTK_LIBRARIES could have been initialized by previous execution of 'find_package(FLTK ...)' in a project using FLTK
157 lines
5.5 KiB
CMake
157 lines
5.5 KiB
CMake
#
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# CMakeLists.txt to build the FLTK project using CMake (www.cmake.org)
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# Originally written by Michael Surette
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#
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# Copyright 1998-2022 by Bill Spitzak and others.
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#
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# This library is free software. Distribution and use rights are outlined in
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# the file "COPYING" which should have been included with this file. If this
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# file is missing or damaged, see the license at:
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#
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# https://www.fltk.org/COPYING.php
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#
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# Please see the following page on how to report bugs and issues:
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#
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# https://www.fltk.org/bugs.php
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#
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#######################################################################
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# basic setup
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#######################################################################
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set (EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin)
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set (LIBRARY_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/lib)
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set (ARCHIVE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/lib)
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# Search for modules in the FLTK source dir first
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set (CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake")
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set (FLTK_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
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include_directories (${FLTK_INCLUDE_DIRS})
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# Remember root of FLTK source directory in case we're in a subdirectory.
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# Used for instance to find the source directory for doxygen docs
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set (FLTK_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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# Setup install locations (requires CMake 2.8.4)
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include(GNUInstallDirs)
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set (FLTK_BINDIR ${CMAKE_INSTALL_BINDIR} CACHE PATH
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"Binary install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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set (FLTK_LIBDIR ${CMAKE_INSTALL_LIBDIR} CACHE PATH
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"Library install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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set (FLTK_INCLUDEDIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH
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"Public header install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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set (FLTK_DATADIR ${CMAKE_INSTALL_DATADIR} CACHE PATH
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"Non-arch data install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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set (FLTK_MANDIR ${CMAKE_INSTALL_MANDIR} CACHE PATH
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"Manual install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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set (FLTK_DOCDIR ${CMAKE_INSTALL_DATADIR}/doc CACHE PATH
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"Non-arch doc install path relative to CMAKE_INSTALL_PREFIX unless set to an absolute path.")
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#######################################################################
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# initialize internally used variables
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# some of these variables are used to *append* other values later
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#######################################################################
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set (FLTK_LDLIBS "")
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set (FLTK_LIBRARIES "")
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set (GLLIBS "")
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set (IMAGELIBS "")
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set (LDFLAGS "")
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set (LIBS "")
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set (LINK_LIBS "")
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set (STATICIMAGELIBS "")
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#######################################################################
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# platform dependent information
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#######################################################################
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# set where config files go
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if (WIN32 AND NOT CYGWIN)
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set (FLTK_CONFIG_PATH CMake)
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elseif (APPLE AND NOT OPTION_APPLE_X11)
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set (FLTK_CONFIG_PATH FLTK.framework/Resources/CMake)
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else ()
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set (FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk)
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endif (WIN32 AND NOT CYGWIN)
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include(TestBigEndian)
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TEST_BIG_ENDIAN(WORDS_BIGENDIAN)
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if (CMAKE_GENERATOR MATCHES "Xcode")
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if (NOT (CMAKE_VERSION VERSION_LESS 3.9)) # CMake 3.9 and up
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# Tell Xcode to regenerate scheme information automatically whenever the
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# CMake configuration changes without asking the user
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set (CMAKE_XCODE_GENERATE_SCHEME 1)
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endif()
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endif()
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if (APPLE)
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set (HAVE_STRCASECMP 1)
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set (HAVE_DIRENT_H 1)
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set (HAVE_SNPRINTF 1)
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set (HAVE_VSNPRINTF 1)
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set (HAVE_SCANDIR 1)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated")
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if (OPTION_APPLE_X11)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -U__APPLE__")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -U__APPLE__")
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if (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0)) # a.k.a. macOS version ≥ 10.13
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_LIBCPP_HAS_THREAD_API_PTHREAD")
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endif (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0))
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else ()
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set (__APPLE_QUARTZ__ 1)
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -framework Cocoa")
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set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -framework Cocoa")
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endif (OPTION_APPLE_X11)
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endif (APPLE)
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if (WIN32)
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# we do no longer define WIN32 or _WIN32 (since FLTK 1.4.0)
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# ... but if we did, we'd define _WIN32 (since FLTK 1.4.0)
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# add_definitions (-D_WIN32)
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if (MSVC)
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add_definitions (-DWIN32_LEAN_AND_MEAN)
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add_definitions (-D_CRT_SECURE_NO_WARNINGS)
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set (BORDER_WIDTH 2)
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endif (MSVC)
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if (CMAKE_C_COMPILER_ID STREQUAL GNU)
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-subsystem,windows")
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endif (CMAKE_C_COMPILER_ID STREQUAL GNU)
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if (MINGW AND EXISTS /mingw)
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list(APPEND CMAKE_PREFIX_PATH /mingw)
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endif (MINGW AND EXISTS /mingw)
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endif (WIN32)
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#######################################################################
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# size of ints
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include(CheckTypeSize)
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CHECK_TYPE_SIZE(short SIZEOF_SHORT)
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CHECK_TYPE_SIZE(int SIZEOF_INT)
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CHECK_TYPE_SIZE(long SIZEOF_LONG)
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CHECK_TYPE_SIZE("long long" HAVE_LONG_LONG)
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if (${SIZEOF_SHORT} MATCHES "^2$")
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set (U16 "unsigned short")
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endif (${SIZEOF_SHORT} MATCHES "^2$")
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if (${SIZEOF_INT} MATCHES "^4$")
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set (U32 "unsigned")
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else ()
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if (${SIZEOF_LONG} MATCHES "^4$")
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set (U32 "unsigned long")
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endif (${SIZEOF_LONG} MATCHES "^4$")
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endif (${SIZEOF_INT} MATCHES "^4$")
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if (${SIZEOF_INT} MATCHES "^8$")
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set (U64 "unsigned")
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else ()
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if (${SIZEOF_LONG} MATCHES "^8$")
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set (U64 "unsigned long")
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endif (${SIZEOF_LONG} MATCHES "^8$")
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endif (${SIZEOF_INT} MATCHES "^8$")
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