mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-11-25 17:53:47 +00:00
181 lines
7.3 KiB
CMake
181 lines
7.3 KiB
CMake
# - Locate SDL2 library
|
|
# This module defines
|
|
# SDL2_LIBRARY, the name of the library to link against
|
|
# SDL2_FOUND, if false, do not try to link to SDL
|
|
# SDL2_INCLUDE_DIR, where to find SDL.h
|
|
# SDL2_VERSION_STRING, human-readable string containing the version of SDL2
|
|
#
|
|
# This module responds to the the flag:
|
|
# SDL2_BUILDING_LIBRARY
|
|
# If this is defined, then no SDL2_main will be linked in because
|
|
# only applications need main().
|
|
# Otherwise, it is assumed you are building an application and this
|
|
# module will attempt to locate and set the the proper link flags
|
|
# as part of the returned SDL2_LIBRARY variable.
|
|
#
|
|
# Don't forget to include SDL2main.h and SDL2main.m your project for the
|
|
# OS X framework based version. (Other versions link to -lSDL2main which
|
|
# this module will try to find on your behalf.) Also for OS X, this
|
|
# module will automatically add the -framework Cocoa on your behalf.
|
|
#
|
|
#
|
|
# Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration
|
|
# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library
|
|
# (SDL2.dll, libsdl2.so, SDL2.framework, etc).
|
|
# Set SDL2_LIBRARY_TEMP to point to your SDL library, and configure again.
|
|
# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value
|
|
# as appropriate. These values are used to generate the final SDL2_LIBRARY
|
|
# variable, but when these values are unset, SDL2_LIBRARY does not get created.
|
|
#
|
|
#
|
|
# $SDL2DIR is an environment variable that would
|
|
# correspond to the ./configure --prefix=$SDL2DIR
|
|
# used in building SDL2.
|
|
# l.e.galup 9-20-02
|
|
#
|
|
# Modified by Eric Wing.
|
|
# Added code to assist with automated building by using environmental variables
|
|
# and providing a more controlled/consistent search behavior.
|
|
# Added new modifications to recognize OS X frameworks and
|
|
# additional Unix paths (FreeBSD, etc).
|
|
# Also corrected the header search path to follow "proper" SDL guidelines.
|
|
# Added a search for SDLmain which is needed by some platforms.
|
|
# Added a search for threads which is needed by some platforms.
|
|
# Added needed compile switches for MinGW.
|
|
#
|
|
# Modified for use in Aquaria:
|
|
# Ported to SDL2.
|
|
#
|
|
# On OSX, this will prefer the Framework version (if found) over others.
|
|
# People will have to manually change the cache values of
|
|
# SDL2_LIBRARY to override this selection or set the CMake environment
|
|
# CMAKE_INCLUDE_PATH to modify the search paths.
|
|
#
|
|
# Note that the header path has changed from SDL/SDL.h to just SDL.h
|
|
# This needed to change because "proper" SDL convention
|
|
# is #include "SDL.h", not <SDL/SDL.h>. This is done for portability
|
|
# reasons because not all systems place things in SDL/ (see FreeBSD).
|
|
|
|
#=============================================================================
|
|
# Copyright 2003-2009 Kitware, Inc.
|
|
# Copyright 2012 Benjamin Eikel
|
|
#
|
|
# Distributed under the OSI-approved BSD License (the "License");
|
|
# see accompanying file Copyright.txt for details.
|
|
#
|
|
# This software is distributed WITHOUT ANY WARRANTY; without even the
|
|
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
# See the License for more information.
|
|
#=============================================================================
|
|
# (To distribute this file outside of CMake, substitute the full
|
|
# License text for the above reference.)
|
|
|
|
find_path(SDL2_INCLUDE_DIR SDL.h
|
|
HINTS
|
|
ENV SDL2DIR
|
|
PATH_SUFFIXES include/SDL2 include
|
|
)
|
|
|
|
# SDL-1.1 is the name used by FreeBSD ports...
|
|
# don't confuse it for the version number.
|
|
find_library(SDL2_LIBRARY_TEMP
|
|
NAMES SDL2 # SDL-1.1
|
|
HINTS
|
|
ENV SDL2DIR
|
|
PATH_SUFFIXES lib
|
|
)
|
|
|
|
if(NOT SDL2_BUILDING_LIBRARY)
|
|
if(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
|
|
# Non-OS X framework versions expect you to also dynamically link to
|
|
# SDLmain. This is mainly for Windows and OS X. Other (Unix) platforms
|
|
# seem to provide SDLmain for compatibility even though they don't
|
|
# necessarily need it.
|
|
find_library(SDL2MAIN_LIBRARY
|
|
NAMES SDL2main # SDLmain-1.1
|
|
HINTS
|
|
ENV SDL2DIR
|
|
PATH_SUFFIXES lib
|
|
PATHS
|
|
/sw
|
|
/opt/local
|
|
/opt/csw
|
|
/opt
|
|
)
|
|
endif()
|
|
endif()
|
|
|
|
# SDL may require threads on your system.
|
|
# The Apple build may not need an explicit flag because one of the
|
|
# frameworks may already provide it.
|
|
# But for non-OSX systems, I will use the CMake Threads package.
|
|
if(NOT APPLE)
|
|
find_package(Threads)
|
|
endif()
|
|
|
|
# MinGW needs an additional library, mwindows
|
|
# It's total link flags should look like -lmingw32 -lSDLmain -lSDL -lmwindows
|
|
# (Actually on second look, I think it only needs one of the m* libraries.)
|
|
if(MINGW)
|
|
set(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW")
|
|
endif()
|
|
|
|
if(SDL2_LIBRARY_TEMP)
|
|
# For SDLmain
|
|
if(SDL2MAIN_LIBRARY AND NOT SDL2_BUILDING_LIBRARY)
|
|
list(FIND SDL2_LIBRARY_TEMP "${SDL2MAIN_LIBRARY}" _SDL2_MAIN_INDEX)
|
|
if(_SDL2_MAIN_INDEX EQUAL -1)
|
|
set(SDL2_LIBRARY_TEMP "${SDL2MAIN_LIBRARY}" ${SDL2_LIBRARY_TEMP})
|
|
endif()
|
|
unset(_SDL2_MAIN_INDEX)
|
|
endif()
|
|
|
|
# For OS X, SDL uses Cocoa as a backend so it must link to Cocoa.
|
|
# CMake doesn't display the -framework Cocoa string in the UI even
|
|
# though it actually is there if I modify a pre-used variable.
|
|
# I think it has something to do with the CACHE STRING.
|
|
# So I use a temporary variable until the end so I can set the
|
|
# "real" variable in one-shot.
|
|
if(APPLE)
|
|
set(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa")
|
|
endif()
|
|
|
|
# For threads, as mentioned Apple doesn't need this.
|
|
# In fact, there seems to be a problem if I used the Threads package
|
|
# and try using this line, so I'm just skipping it entirely for OS X.
|
|
if(NOT APPLE)
|
|
set(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
|
|
endif()
|
|
|
|
# For MinGW library
|
|
if(MINGW)
|
|
set(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
|
|
endif()
|
|
|
|
# Set the final string here so the GUI reflects the final state.
|
|
set(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL Library can be found")
|
|
# Set the temp variable to INTERNAL so it is not seen in the CMake GUI
|
|
set(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
|
|
endif()
|
|
|
|
if(SDL2_INCLUDE_DIR AND EXISTS "${SDL2_INCLUDE_DIR}/SDL_version.h")
|
|
file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$")
|
|
file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$")
|
|
file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$")
|
|
string(REGEX REPLACE "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MAJOR "${SDL_VERSION_MAJOR_LINE}")
|
|
string(REGEX REPLACE "^#define[ \t]+SDL_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MINOR "${SDL_VERSION_MINOR_LINE}")
|
|
string(REGEX REPLACE "^#define[ \t]+SDL_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL_VERSION_PATCH "${SDL_VERSION_PATCH_LINE}")
|
|
set(SDL2_VERSION_STRING ${SDL_VERSION_MAJOR}.${SDL_VERSION_MINOR}.${SDL_VERSION_PATCH})
|
|
unset(SDL_VERSION_MAJOR_LINE)
|
|
unset(SDL_VERSION_MINOR_LINE)
|
|
unset(SDL_VERSION_PATCH_LINE)
|
|
unset(SDL_VERSION_MAJOR)
|
|
unset(SDL_VERSION_MINOR)
|
|
unset(SDL_VERSION_PATCH)
|
|
endif()
|
|
|
|
include(FindPackageHandleStandardArgs)
|
|
|
|
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2
|
|
REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR
|
|
VERSION_VAR SDL2_VERSION_STRING)
|