Ajout du mixer et de la musique de fond

src/lib/libSDL2_mixer.la

+# libSDL2_mixer.la - a libtool library file
+# Generated by ltmain.sh (GNU libtool) 2.2.6
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='../bin/SDL2_mixer.dll'
+
+# Names of this library.
+library_names='libSDL2_mixer.dll.a'
+
+# The name of the static archive.
+old_library='libSDL2_mixer.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -L/usr/local/x86_64-w64-mingw32/lib -lmingw32 /usr/local/x86_64-w64-mingw32/lib/libSDL2.la -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -lwinmm'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libSDL2_mixer.
+current=600
+age=600
+revision=3
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/Users/valve/release/SDL_mixer/SDL2_mixer-2.6.3/x86_64-w64-mingw32/lib'

src/lib/pkgconfig/SDL2_mixer.pc

+prefix=/x86_64-w64-mingw32
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: SDL2_mixer
+Description: mixer library for Simple DirectMedia Layer
+Version: 2.6.3
+Requires: sdl2 >= 2.0.9
+Libs: -L${libdir} -lSDL2_mixer
+Cflags: -I${includedir}/SDL2
+Requires.private: 
+Libs.private:  -lwinmm