makefiles: Only allow includes and defines in pkg-config flags.

configure

@@ -14620,16 +14620,7 @@ $as_echo "$as_me:${as_lineno-$LINENO}: gstreamer-1.0 gstreamer-video-1.0 gstream
 $as_echo "$as_me:${as_lineno-$LINENO}: gstreamer-1.0 gstreamer-video-1.0 gstreamer-audio-1.0 libs: $GSTREAMER_LIBS" >&5
 ac_save_CPPFLAGS=$CPPFLAGS
 CPPFLAGS="$CPPFLAGS $GSTREAMER_CFLAGS"
-ac_gst_incl=""
-        for i in $GSTREAMER_CFLAGS
-        do
-            case "$i" in
-                -I*) ac_gst_incl="$ac_gst_incl $i";;
-            esac
-        done
-        GSTREAMER_CFLAGS=$ac_gst_incl
-        CPPFLAGS="$ac_save_CPPFLAGS $GSTREAMER_CFLAGS"
-        ac_fn_c_check_header_mongrel "$LINENO" "gst/gst.h" "ac_cv_header_gst_gst_h" "$ac_includes_default"
+ac_fn_c_check_header_mongrel "$LINENO" "gst/gst.h" "ac_cv_header_gst_gst_h" "$ac_includes_default"
 if test "x$ac_cv_header_gst_gst_h" = xyes; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether gint64 defined by gst/gst.h is indeed 64-bit" >&5
 $as_echo_n "checking whether gint64 defined by gst/gst.h is indeed 64-bit... " >&6; }

configure.ac

@@ -1608,16 +1608,7 @@ dnl **** Check for gstreamer ****
 if test "x$with_gstreamer" != "xno"
 then
     WINE_PACKAGE_FLAGS(GSTREAMER,[gstreamer-1.0 gstreamer-video-1.0 gstreamer-audio-1.0],,,,
-        [ac_gst_incl=""
-        for i in $GSTREAMER_CFLAGS
-        do
-            case "$i" in
-                -I*) ac_gst_incl="$ac_gst_incl $i";;
-            esac
-        done
-        GSTREAMER_CFLAGS=$ac_gst_incl
-        CPPFLAGS="$ac_save_CPPFLAGS $GSTREAMER_CFLAGS"
-        AC_CHECK_HEADER([gst/gst.h],
+        [AC_CHECK_HEADER([gst/gst.h],
             [AC_MSG_CHECKING([whether gint64 defined by gst/gst.h is indeed 64-bit])
               AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <gst/gst.h>]],
                                                  [[static int a[sizeof(gint64) > 4 ? 1 : -1]; if (a[0]) return 0;]])],

tools/makedep.c

@@ -4263,7 +4263,7 @@ static void load_sources( struct makefile *make )
     for (i = 0; i < value.count; i++)
         if (!strncmp( value.str[i], "-I", 2 ))
             strarray_add_uniq( &make->include_paths, value.str[i] + 2 );
-        else
+        else if (!strncmp( value.str[i], "-D", 2 ) || !strncmp( value.str[i], "-U", 2 ))
             strarray_add_uniq( &make->define_args, value.str[i] );
     strarray_addall( &make->define_args, get_expanded_make_var_array( make, "EXTRADEFS" ));