Index: mpfc-1.3.7/configure.in
===================================================================
--- mpfc-1.3.7.orig/configure.in
+++ mpfc-1.3.7/configure.in
@@ -66,7 +66,6 @@ LIBS=$LIBS_save
 AC_ARG_ENABLE(mp3, 
 [	--disable-mp3		Disable mp3 input plugin [default=enabled]],,
 		enable_mp3="yes")
-if test "x$enable_mp3" = xyes; then
 	# Check for math lib
 	LIBS_save=$LIBS
 	AC_CHECK_HEADERS([math.h],,[AC_MSG_ERROR(*** Can't find math header ***)])
@@ -75,6 +74,7 @@ if test "x$enable_mp3" = xyes; then
 	AC_SUBST(MATH_LIBS)
 	LIBS=$LIBS_save
 
+if test "x$enable_mp3" = xyes; then
 	# Check for libmad
 	LIBS_save=$LIBS
 	AC_CHECK_HEADERS([mad.h],,[AC_MSG_ERROR(*** Can't find libmad header ***)])