config.mk: add $FREETYPELIBS and $FREETYPEINC, simpler to override (ports and *BSDs)

config.mk

@@ -14,9 +14,15 @@ X11LIB = /usr/X11R6/lib
 XINERAMALIBS  = -lXinerama
 XINERAMAFLAGS = -DXINERAMA
 
+# freetype
+FREETYPELIBS = -lfontconfig -lXft
+FREETYPEINC = /usr/include/freetype2
+# OpenBSD (uncomment)
+#FREETYPEINC = ${X11INC}/freetype2
+
 # includes and libs
-INCS = -I${X11INC} -I/usr/include/freetype2
+INCS = -I${X11INC} -I${FREETYPEINC}
-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} -lfontconfig -lXft
+LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
 
 # flags
 CPPFLAGS = -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}