Use system game-music-emu

.gitmodules

@@ -57,6 +57,3 @@
 [submodule "subprojects/protobuf-c"]
 	path = subprojects/protobuf-c
 	url = https://github.com/protobuf-c/protobuf-c.git
-[submodule "backends/playback/gme/game-music-emu"]
-	path = backends/playback/gme/game-music-emu
-	url = https://github.com/libgme/game-music-emu.git

backends/playback/gme/CMakeLists.txt

@@ -1,8 +1,7 @@
 set(BACKEND_GME_SRC ${CMAKE_CURRENT_SOURCE_DIR}/gme_backend.cpp)
 set(BACKEND_GME_INC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
-add_subdirectory(game-music-emu)
+pkg_check_modules(libgme IMPORTED_TARGET libgme)
 add_playback_backend(gme_backend ${BACKEND_GME_SRC})
 target_include_directories(gme_backend PRIVATE ${BACKEND_GME_INC})
 find_package(OpenMP)
-target_include_directories(gme_backend PUBLIC game-music-emu/gme)
-target_link_libraries(gme_backend PUBLIC gme OpenMP::OpenMP_CXX)
+target_link_libraries(gme_backend PUBLIC PkgConfig::libgme OpenMP::OpenMP_CXX)

backends/playback/gme/game-music-emu

@@ -1 +0,0 @@
-Subproject commit e76bdc0cb916e79aa540290e6edd0c445879d3ba

backends/playback/gme/gme_backend.cpp

@@ -11,7 +11,7 @@
 #include <license.hpp>
 #include <assets/assets.h>
 #include <limits.h>
-#include <gme.h>
+#include <gme/gme.h>
 void GmeBackend::load(const char *filename) {
     memset(&spec, 0, sizeof(spec));
     current_file = filename;

backends/playback/gme/gme_backend.hpp

@@ -10,7 +10,7 @@
 #include <vector>
 #include <util.hpp>
 #include <SDL.h>
-#include <gme.h>
+#include <gme/gme.h>
 #include "file_backend.hpp"
 class GmeBackend : public PlaybackBackend {
     File *file;