mirror of
https://github.com/reactos/CMake.git
synced 2024-11-23 19:49:51 +00:00
191 lines
7.1 KiB
CMake
191 lines
7.1 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
#[=======================================================================[.rst:
|
|
FindSDL
|
|
-------
|
|
|
|
Locate SDL library
|
|
|
|
This module defines
|
|
|
|
::
|
|
|
|
SDL_LIBRARY, the name of the library to link against
|
|
SDL_FOUND, if false, do not try to link to SDL
|
|
SDL_INCLUDE_DIR, where to find SDL.h
|
|
SDL_VERSION_STRING, human-readable string containing the version of SDL
|
|
|
|
|
|
|
|
This module responds to the flag:
|
|
|
|
::
|
|
|
|
SDL_BUILDING_LIBRARY
|
|
If this is defined, then no SDL_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 proper link flags
|
|
as part of the returned SDL_LIBRARY variable.
|
|
|
|
|
|
|
|
Don't forget to include SDLmain.h and SDLmain.m your project for the
|
|
OS X framework based version. (Other versions link to -lSDLmain 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 SDL_LIBRARY_TEMP in your
|
|
configuration and no SDL_LIBRARY, it means CMake did not find your SDL
|
|
library (SDL.dll, libsdl.so, SDL.framework, etc). Set
|
|
SDL_LIBRARY_TEMP to point to your SDL library, and configure again.
|
|
Similarly, if you see an empty SDLMAIN_LIBRARY, you should set this
|
|
value as appropriate. These values are used to generate the final
|
|
SDL_LIBRARY variable, but when these values are unset, SDL_LIBRARY
|
|
does not get created.
|
|
|
|
|
|
|
|
$SDLDIR is an environment variable that would correspond to the
|
|
./configure --prefix=$SDLDIR used in building SDL. 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.
|
|
|
|
On OSX, this will prefer the Framework version (if found) over others.
|
|
People will have to manually change the cache values of SDL_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).
|
|
#]=======================================================================]
|
|
|
|
find_path(SDL_INCLUDE_DIR SDL.h
|
|
HINTS
|
|
ENV SDLDIR
|
|
PATH_SUFFIXES SDL SDL12 SDL11
|
|
# path suffixes to search inside ENV{SDLDIR}
|
|
include/SDL include/SDL12 include/SDL11 include
|
|
)
|
|
|
|
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
|
|
set(VC_LIB_PATH_SUFFIX lib/x64)
|
|
else()
|
|
set(VC_LIB_PATH_SUFFIX lib/x86)
|
|
endif()
|
|
|
|
# SDL-1.1 is the name used by FreeBSD ports...
|
|
# don't confuse it for the version number.
|
|
find_library(SDL_LIBRARY_TEMP
|
|
NAMES SDL SDL-1.1
|
|
HINTS
|
|
ENV SDLDIR
|
|
PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
|
|
)
|
|
|
|
# Hide this cache variable from the user, it's an internal implementation
|
|
# detail. The documented library variable for the user is SDL_LIBRARY
|
|
# which is derived from SDL_LIBRARY_TEMP further below.
|
|
set_property(CACHE SDL_LIBRARY_TEMP PROPERTY TYPE INTERNAL)
|
|
|
|
if(NOT SDL_BUILDING_LIBRARY)
|
|
if(NOT SDL_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(SDLMAIN_LIBRARY
|
|
NAMES SDLmain SDLmain-1.1
|
|
HINTS
|
|
ENV SDLDIR
|
|
PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
|
|
PATHS
|
|
/opt
|
|
)
|
|
endif()
|
|
endif()
|
|
|
|
# SDL may require threads on your system.
|
|
# The Apple build may not need an explicit flag because one of the
|
|
# frameworks may already provide it.
|
|
# But for non-OSX systems, I will use the CMake Threads package.
|
|
if(NOT APPLE)
|
|
find_package(Threads)
|
|
endif()
|
|
|
|
# MinGW needs an additional link flag, -mwindows
|
|
# It's total link flags should look like -lmingw32 -lSDLmain -lSDL -mwindows
|
|
if(MINGW)
|
|
set(MINGW32_LIBRARY mingw32 "-mwindows" CACHE STRING "link flags for MinGW")
|
|
endif()
|
|
|
|
if(SDL_LIBRARY_TEMP)
|
|
# For SDLmain
|
|
if(SDLMAIN_LIBRARY AND NOT SDL_BUILDING_LIBRARY)
|
|
list(FIND SDL_LIBRARY_TEMP "${SDLMAIN_LIBRARY}" _SDL_MAIN_INDEX)
|
|
if(_SDL_MAIN_INDEX EQUAL -1)
|
|
set(SDL_LIBRARY_TEMP "${SDLMAIN_LIBRARY}" ${SDL_LIBRARY_TEMP})
|
|
endif()
|
|
unset(_SDL_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(SDL_LIBRARY_TEMP ${SDL_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(SDL_LIBRARY_TEMP ${SDL_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
|
|
endif()
|
|
|
|
# For MinGW library
|
|
if(MINGW)
|
|
set(SDL_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL_LIBRARY_TEMP})
|
|
endif()
|
|
|
|
# Set the final string here so the GUI reflects the final state.
|
|
set(SDL_LIBRARY ${SDL_LIBRARY_TEMP} CACHE STRING "Where the SDL Library can be found")
|
|
endif()
|
|
|
|
if(SDL_INCLUDE_DIR AND EXISTS "${SDL_INCLUDE_DIR}/SDL_version.h")
|
|
file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$")
|
|
file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$")
|
|
file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$")
|
|
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(SDL_VERSION_STRING ${SDL_VERSION_MAJOR}.${SDL_VERSION_MINOR}.${SDL_VERSION_PATCH})
|
|
unset(SDL_VERSION_MAJOR_LINE)
|
|
unset(SDL_VERSION_MINOR_LINE)
|
|
unset(SDL_VERSION_PATCH_LINE)
|
|
unset(SDL_VERSION_MAJOR)
|
|
unset(SDL_VERSION_MINOR)
|
|
unset(SDL_VERSION_PATCH)
|
|
endif()
|
|
|
|
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
|
|
|
|
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL
|
|
REQUIRED_VARS SDL_LIBRARY SDL_INCLUDE_DIR
|
|
VERSION_VAR SDL_VERSION_STRING)
|