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@@ -1,16 +1,17 @@
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# This module defines
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# SDL2::SDL2, a target providing SDL2 itself
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# SDL2::SDL2main, a target providing an entry point for applications
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# SDL2_LIBRARY, the name of the library to link against
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# SDL2_FOUND, if false, do not try to link to SDL2
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# SDL2_INCLUDE_DIR, where to find SDL.h
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#
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# This module responds to the the flag:
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# SDL2_BUILDING_LIBRARY
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# If this is defined, then no SDL2main will be linked in because
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# If this is defined, then no SDL2::SDL2main target will be created because
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# only applications need main().
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# Otherwise, it is assumed you are building an application and this
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# module will attempt to locate and set the the proper link flags
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# as part of the returned SDL2_LIBRARY variable.
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# as part of the SDL2::SDL2main target.
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#
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# Don't forget to include SDLmain.h and SDLmain.m your project for the
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# OS X framework based version. (Other versions link to -lSDL2main which
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@@ -18,15 +19,17 @@
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# module will automatically add the -framework Cocoa on your behalf.
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#
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#
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# Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration
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# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library
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# (SDL2.dll, libsdl2.so, SDL2.framework, etc).
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# Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again.
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# Additional Note: If you see an empty SDL2_LIBRARY in your configuration, it
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# means CMake did not find your SDL2 library (SDL2.dll, libsdl2.so,
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# SDL2.framework, etc).
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# Set SDL2_LIBRARY to point to your SDL2 library, and configure again.
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# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value
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# as appropriate. These values are used to generate the final SDL2_LIBRARY
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# variable, but when these values are unset, SDL2_LIBRARY does not get created.
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# as appropriate.
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#
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#
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# Modified by Dominic Clark.
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# Added modern CMake targets to match those SDL2 itself uses.
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#
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# $SDL2DIR is an environment variable that would
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# correspond to the ./configure --prefix=$SDL2DIR
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# used in building SDL2.
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@@ -92,7 +95,7 @@ else()
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set(PATH_SUFFIXES lib/x86 lib)
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endif()
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FIND_LIBRARY(SDL2_LIBRARY_TEMP
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FIND_LIBRARY(SDL2_LIBRARY
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NAMES SDL2
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HINTS
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$ENV{SDL2DIR}
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@@ -130,41 +133,42 @@ IF(MINGW)
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SET(MINGW32_LIBRARY mingw32 "-mwindows" CACHE STRING "mwindows for MinGW")
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ENDIF(MINGW)
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IF(SDL2_LIBRARY_TEMP)
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# For SDL2main
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IF(NOT SDL2_BUILDING_LIBRARY)
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IF(SDL2MAIN_LIBRARY)
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SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP})
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ENDIF(SDL2MAIN_LIBRARY)
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ENDIF(NOT SDL2_BUILDING_LIBRARY)
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IF(SDL2_LIBRARY)
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ADD_LIBRARY(SDL2::SDL2 UNKNOWN IMPORTED)
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SET_TARGET_PROPERTIES(SDL2::SDL2 PROPERTIES
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IMPORTED_LOCATION "${SDL2_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
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)
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# For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa.
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# CMake doesn't display the -framework Cocoa string in the UI even
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# though it actually is there if I modify a pre-used variable.
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# I think it has something to do with the CACHE STRING.
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# So I use a temporary variable until the end so I can set the
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# "real" variable in one-shot.
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IF(APPLE)
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SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa")
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SET_PROPERTY(TARGET SDL2::SDL2 APPEND PROPERTY
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INTERFACE_LINK_OPTIONS "-framework Cocoa"
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)
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ENDIF(APPLE)
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# For threads, as mentioned Apple doesn't need this.
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# In fact, there seems to be a problem if I used the Threads package
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# and try using this line, so I'm just skipping it entirely for OS X.
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IF(NOT APPLE)
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SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
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ENDIF(NOT APPLE)
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IF(NOT APPLE AND Threads_FOUND)
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SET_PROPERTY(TARGET SDL2::SDL2 APPEND PROPERTY
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INTERFACE_LINK_LIBRARIES "Threads::Threads"
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)
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ENDIF(NOT APPLE AND Threads_FOUND)
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ENDIF(SDL2_LIBRARY)
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# For MinGW library
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IF(NOT SDL2_BUILDING_LIBRARY AND SDL2MAIN_LIBRARY)
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ADD_LIBRARY(SDL2::SDL2main STATIC IMPORTED)
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SET_TARGET_PROPERTIES(SDL2::SDL2main PROPERTIES
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IMPORTED_LOCATION "${SDL2MAIN_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
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)
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IF(MINGW)
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SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
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SET_PROPERTY(TARGET SDL2::SDL2main APPEND PROPERTY
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INTERFACE_LINK_OPTIONS "${MINGW32_LIBRARY}"
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)
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ENDIF(MINGW)
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# Set the final string here so the GUI reflects the final state.
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SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found")
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# Set the temp variable to INTERNAL so it is not seen in the CMake GUI
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SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
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ENDIF(SDL2_LIBRARY_TEMP)
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ENDIF(NOT SDL2_BUILDING_LIBRARY AND SDL2MAIN_LIBRARY)
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# message("</FindSDL2.cmake>")
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Dominic Clark