diff --git a/headers/build/HaikuBuildCompatibility.h b/headers/build/HaikuBuildCompatibility.h
index 74bedebe9b..33f2aa3f1f 100644
--- a/headers/build/HaikuBuildCompatibility.h
+++ b/headers/build/HaikuBuildCompatibility.h
@@ -78,5 +78,14 @@ extern float	roundf(float value);
 #define INT64_MAX LONGLONG_MAX
 #endif
 
+#define	B_MPEG_2_AUDIO_LAYER_1 (enum mpeg_id)0x201
+#define	B_MPEG_2_AUDIO_LAYER_2 (enum mpeg_id)0x202
+#define	B_MPEG_2_AUDIO_LAYER_3 (enum mpeg_id)0x203
+#define	B_MPEG_2_VIDEO (enum mpeg_id)0x211
+#define	B_MPEG_2_5_AUDIO_LAYER_1 (enum mpeg_id)0x301
+#define	B_MPEG_2_5_AUDIO_LAYER_2 (enum mpeg_id)0x302
+#define	B_MPEG_2_5_AUDIO_LAYER_3 (enum mpeg_id)0x303
+
+
 #endif	// HAIKU_BUILD_COMPATIBILITY_H
 
diff --git a/src/add-ons/media/plugins/mp3_decoder/mpglib/Jamfile b/src/add-ons/media/plugins/mp3_decoder/mpglib/Jamfile
index bbb8f4a90d..0ef9bbab1d 100644
--- a/src/add-ons/media/plugins/mp3_decoder/mpglib/Jamfile
+++ b/src/add-ons/media/plugins/mp3_decoder/mpglib/Jamfile
@@ -1,5 +1,7 @@
 SubDir HAIKU_TOP src add-ons media plugins mp3_decoder mpglib ;
 
+SetSubDirSupportedPlatformsBeOSCompatible ;
+
 StaticLibrary libmpglib.a :
 	common.c
 	dct64_i386.c