imlib2: fixed to find freetype when cross-compiling

e17/imlib2/imlib2.conf

@@ -18,3 +18,9 @@
 	var_append confopt " " "--disable-mmx"
 
 pkginstalled xorg-server || var_append extraconfopt ' ' '--without-x'
+
+if atstage cross; then
+	cleanconfopt=0
+	export FREETYPE_CONFIG="pkg-config freetype2"
+	var_append extraconfopt ' ' '"--with-freetype-config=$FREETYPE_CONFIG"'
+fi