sdl2-config.cmake.in

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Author : James Le Cuirot
Date : 2020-04-11 23:38:34
Hash : 99f87a71
Message : build: Merge pkg-config Libs.private into Libs for static-only builds A project being built entirely statically will call pkg-config with --static, which utilises the Libs.private field. Conversely it will not use --static when not being built entirely statically, even if there is only a static build of SDL available. This will most likely cause the build to fail due to underlinking unless we merge the Libs fields. This is what the Meson build system does when it generates pkg-config files. This also also follows the behaviour of sdl2-config. At the same time, the runtime linker flags are not applicable to static-only builds so only add them for shared builds.

sdl2-config.cmake.in

# 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${SDL2_LIBDIR} @SDL_RLD_FLAGS@ @SDL_LIBS@")
string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)

if(NOT TARGET SDL2::SDL2)
  # Remove -lSDL2 as that is handled by CMake, note the space at the end so it does not replace e.g. -lSDL2main
  # This may require "libdir" beeing set (from above)
  string(REPLACE "-lSDL2 " "" SDL2_EXTRA_LINK_FLAGS "@SDL_RLD_FLAGS@ @SDL_LIBS@ ")
  string(STRIP "${SDL2_EXTRA_LINK_FLAGS}" SDL2_EXTRA_LINK_FLAGS)
  string(REPLACE "-lSDL2 " "" SDL2_EXTRA_LINK_FLAGS_STATIC "@SDL_STATIC_LIBS@ ")
  string(STRIP "${SDL2_EXTRA_LINK_FLAGS_STATIC}" SDL2_EXTRA_LINK_FLAGS_STATIC)

  add_library(SDL2::SDL2 SHARED IMPORTED)
  set_target_properties(SDL2::SDL2 PROPERTIES
    INTERFACE_INCLUDE_DIRECTORIES "@includedir@/SDL2"
    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    IMPORTED_LOCATION "@libdir@/${CMAKE_SHARED_LIBRARY_PREFIX}SDL2${CMAKE_SHARED_LIBRARY_SUFFIX}"
    INTERFACE_LINK_LIBRARIES "${SDL2_EXTRA_LINK_FLAGS}")

  add_library(SDL2::SDL2-static STATIC IMPORTED)
  set_target_properties(SDL2::SDL2-static PROPERTIES
    INTERFACE_INCLUDE_DIRECTORIES "@includedir@/SDL2"
    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    IMPORTED_LOCATION "@libdir@/${CMAKE_STATIC_LIBRARY_PREFIX}SDL2${CMAKE_STATIC_LIBRARY_SUFFIX}"
    INTERFACE_LINK_LIBRARIES "${SDL2_EXTRA_LINK_FLAGS_STATIC}")

  add_library(SDL2::SDL2main STATIC IMPORTED)
  set_target_properties(SDL2::SDL2main PROPERTIES
    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    IMPORTED_LOCATION "@libdir@/${CMAKE_STATIC_LIBRARY_PREFIX}SDL2main${CMAKE_STATIC_LIBRARY_SUFFIX}")
endif()

kc3-lang/SDL/sdl2-config.cmake.in

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kc3-lang/SDL /sdl2-config.cmake.in