$FreeBSD$

--- configure.orig
+++ configure
@@ -39576,7 +39576,7 @@
 if test "$with_libvisual" = "yes"; then
     ## libvisual plugin depends on sdl
     # Extract the first word of "sdl-config", so it can be a program name with args.
-set dummy sdl-config; ac_word=$2
+set dummy $SDL_CONFIG; ac_word=$2
 { echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
 if test "${ac_cv_prog_SDL_CONFIG+set}" = set; then
@@ -39613,15 +39613,15 @@
 
 
 
-    if test x$SDL_CONFIG = xyes; then
-        sdl_cflags=`sdl-config --cflags`
-        sdl_libs=`sdl-config --libs`
+    if test -n $SDL_CONFIG ; then
+	sdl_cflags=`$SDL_CONFIG --cflags`
+	sdl_libs=`$SDL_CONFIG --libs`
     fi
 
 
 
 
-    if test x$PKGCONFIGFOUND = xyes -a x$SDL_CONFIG = xyes; then
+    if test x$PKGCONFIGFOUND = xyes -a -n $SDL_CONFIG ; then
 
 
   succeeded=no
@@ -40872,7 +40872,7 @@
 
 
 OLDCFLAGS="$CFLAGS"
-CFLAGS="-I$ruby_includes -Wall"
+CFLAGS+="-I$ruby_includes -Wall"
 OLDCPPFLAGS="$CPPFLAGS"
 CPPFLAGS="-I$ruby_includes" #no I don't know why CPPFLAGS is used