build(sdl2): use SDL2 vars in cmake

In Ubuntu Jammy (22.04LTS) and some other Linux OS, FindSDL2_mixer cmake
is not provided. However, the pkg-config file is present.

Ref fofix#21

CMakeLists.txt

@@ -37,8 +37,8 @@ if (WIN32 AND USE_WIN_DEP)
     # gthread
     find_path(GTHREAD2_INCLUDE_DIRS NAMES glib/gthread.h PATHS "${DEPENDENCY_FOLDER}/include/glib-2.0")
     find_library(GTHREAD2_LINK_LIBRARIES NAMES gthread-2.0 PATHS "${DEPENDENCY_FOLDER}/lib")
-    # sdl_mixer
-    find_package(FindSDL_mixer)
+    # sdl2_mixer
+    find_package(FindSDL2_mixer)
     # soundtouch
     find_path(SOUNDTOUCH_INCLUDE_DIRS NAMES SoundTouch.h SoundTouchDLL.h PATHS "${DEPENDENCY_FOLDER}/include/soundtouch")
     find_library(SOUNDTOUCH_LINK_LIBRARIES NAMES libsoundtouch soundtouch soundtouchdll_x64 soundtouchdll_x86 soundtouchdll soundtouch-c PATHS "${DEPENDENCY_FOLDER}/lib")
@@ -54,7 +54,8 @@ else()
     pkg_search_module(GTHREAD2 REQUIRED gthread-2.0 IMPORTED_TARGET)
     pkg_search_module(SOUNDTOUCH REQUIRED soundtouch soundtouch-1.0 soundtouch-1.4 IMPORTED_TARGET)
     pkg_search_module(VORBISFILE REQUIRED vorbisfile IMPORTED_TARGET)
-    find_package(SDL_mixer REQUIRED)
+    pkg_search_module(SDL2_MIXER REQUIRED SDL2_mixer IMPORTED_TARGET)
+    #find_package(SDL_mixer REQUIRED)
 endif()
 
 

mixstream/CMakeLists.txt

@@ -7,14 +7,14 @@ target_include_directories(_MixStream
     PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
     PRIVATE ${GLIB2_INCLUDE_DIRS}
     PRIVATE ${GTHREAD2_INCLUDE_DIRS}   # for osx
-    PRIVATE ${SDL_MIXER_INCLUDE_DIRS}
+    PRIVATE ${SDL2_MIXER_INCLUDE_DIRS}
     PRIVATE ${SOUNDTOUCH_INCLUDE_DIRS}
     PRIVATE ${VORBISFILE_INCLUDE_DIRS} # for osx
 )
 target_link_libraries(_MixStream
     ${GLIB2_LINK_LIBRARIES}
     ${GTHREAD2_LINK_LIBRARIES}         # for osx
-    ${SDL_MIXER_LIBRARIES}
+    ${SDL2_MIXER_LIBRARIES}
     ${SOUNDTOUCH_LINK_LIBRARIES}
     ${VORBISFILE_LINK_LIBRARIES}
 )
@@ -37,7 +37,7 @@ if (WIN32)
     list(APPEND DEPENDENCIES_DLL ${DEPENDENCY_FOLDER}/bin/SoundTouchDll_x64.dll)
     list(APPEND DEPENDENCIES_DLL ${DEPENDENCY_FOLDER}/bin/SoundTouchDll_x84.dll)
     list(APPEND DEPENDENCIES_DLL ${DEPENDENCY_FOLDER}/bin/libSoundTouch-0.dll)
-    list(APPEND DEPENDENCIES_DLL ${DEPENDENCY_FOLDER}/bin/SDL_mixer.dll)
+    list(APPEND DEPENDENCIES_DLL ${DEPENDENCY_FOLDER}/bin/SDL2_mixer.dll)
     foreach(DEP IN LISTS ${DEPENDENCIES_DLL})
         if (EXISTS ${DEP})
             install(FILES ${DEP}