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Fixed bug 2464 - Configure a sdl2-config.cmake.in together with sdl2.…

…pc.in

Leonardo

Despite having a CMakeLists.txt file, SDL2 seems to be mainly built using the autotools system by package-managers. It is nice to have it but it is only useful if you are building SDL2 by yourself.

People that want to use CMake to find their already-installed SDL2 are using a FindSDL2.cmake module based on the old FindSDL.cmake. This is not deprecated but it is discouraged by the CMake devs (see http://www.cmake.org/Bug/view.php?id=14826), as these modules needs maintainers to be included in the official CMake installation.

To fix that, SDL and its accompanying libraries could configure a simple sdl2-config.cmake file, much like it does with sdl2.pc.in. We don't need to configure a full sdl2-config.cmake as in this post, http://forums.libsdl.org/viewtopic.php?t=10068&sid=ccf8abbf0d73fb03ae9cded991e60959 (because it depends on it being built with CMake). Using something as simple as http://www.cmake.org/Wiki/CMake/Tutorials/Packaging#Package_Configuration_Files is deemed enough. Here is another: http://quickgit.kde.org/?p=prison.git&a=blob&f=lib%2Fprison%2FPrisonConfig.cmake.in
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slouken committed Jun 30, 2015
1 parent f1b7a84 commit bf9bd59c013ec9c2f799421ec1a410c5d35b8c38
Showing with 16 additions and 2 deletions.
  1. +3 −0 Makefile.in
  2. +2 −1 configure
  3. +1 −1 configure.in
  4. +10 −0 sdl2-config.cmake.in
@@ -176,6 +176,8 @@ install-data:
$(INSTALL) -m 644 $(srcdir)/sdl2.m4 $(DESTDIR)$(datadir)/aclocal/sdl2.m4
$(SHELL) $(auxdir)/mkinstalldirs $(DESTDIR)$(libdir)/pkgconfig
$(INSTALL) -m 644 sdl2.pc $(DESTDIR)$(libdir)/pkgconfig
$(SHELL) $(auxdir)/mkinstalldirs $(DESTDIR)$(libdir)/cmake/SDL2
$(INSTALL) -m 644 sdl2-config.cmake $(DESTDIR)$(libdir)/cmake/SDL2

uninstall: uninstall-bin uninstall-hdrs uninstall-lib uninstall-data
uninstall-bin:
@@ -194,6 +196,7 @@ uninstall-lib:
uninstall-data:
rm -f $(DESTDIR)$(datadir)/aclocal/sdl2.m4
rm -f $(DESTDIR)$(libdir)/pkgconfig/sdl2.pc
rm -f $(DESTDIR)$(libdir)/cmake/SDL2/sdl2-config.cmake

clean:
rm -rf $(objects)
$SDLTEST_DEPENDS
__EOF__

ac_config_files="$ac_config_files Makefile:Makefile.in:Makefile.rules sdl2-config SDL2.spec sdl2.pc"
ac_config_files="$ac_config_files Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc"

ac_config_commands="$ac_config_commands sdl2_config"

"libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
"Makefile") CONFIG_FILES="$CONFIG_FILES Makefile:Makefile.in:Makefile.rules" ;;
"sdl2-config") CONFIG_FILES="$CONFIG_FILES sdl2-config" ;;
"sdl2-config.cmake") CONFIG_FILES="$CONFIG_FILES sdl2-config.cmake" ;;
"SDL2.spec") CONFIG_FILES="$CONFIG_FILES SDL2.spec" ;;
"sdl2.pc") CONFIG_FILES="$CONFIG_FILES sdl2.pc" ;;
"sdl2_config") CONFIG_COMMANDS="$CONFIG_COMMANDS sdl2_config" ;;
@@ -3533,7 +3533,7 @@ $SDLTEST_DEPENDS
__EOF__

AC_CONFIG_FILES([
Makefile:Makefile.in:Makefile.rules sdl2-config SDL2.spec sdl2.pc
Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc
])
AC_CONFIG_COMMANDS([sdl2_config],[chmod a+x sdl2-config])

@@ -0,0 +1,10 @@
# sdl2 cmake project-config input for ./configure scripts

set(prefix "@prefix@")
set(exec_prefix "@exec_prefix@")
set(libdir "@libdir")
set(SDL2_PREFIX "@prefix@")
set(SDL2_EXEC_PREFIX "@prefix@")
set(SDL2_LIBDIR "@libdir@")
set(SDL2_INCLUDE_DIRS "@includedir@/SDL2")
set(SDL2_LIBRARIES "-L${SDL2_LIBDIR} @SDL_RLD_FLAGS@ @SDL_LIBS@")

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