patch-Makefile

--- Makefile.orig	2015-02-24 13:35:00 UTC
+++ Makefile
@@ -1,5 +1,6 @@
 PREFIX ?= /usr
 BINDIR ?= ${PREFIX}/bin
+XDGDIR ?= ${PREFIX}/etc/xdg
 
 CC ?= gcc
 
@@ -61,6 +62,8 @@ OBJS = $(foreach name,$(SRCS_RAW),$(name).o)
 %.o: src/%.c ${HDRS}
 	${CC} ${INCS} ${CFLAGS} ${CPPFLAGS} -c src/$*.c
 
+all: skippy-xd${EXESUFFIX}
+
 skippy-xd${EXESUFFIX}: ${OBJS}
 	${CC} ${LDFLAGS} -o skippy-xd${EXESUFFIX} ${OBJS} ${LIBS}
 
@@ -68,9 +71,9 @@ clean:
 	rm -f ${BINS} ${OBJS} src/.clang_complete
 
 install: ${BINS} skippy-xd.sample.rc
-	install -d "${DESTDIR}${BINDIR}/" "${DESTDIR}/etc/xdg/"
+	install -d "${DESTDIR}${BINDIR}/" "${DESTDIR}${XDGDIR}/"
 	install -m 755 ${BINS} "${DESTDIR}${BINDIR}/"
-	install -m 644 skippy-xd.sample.rc "${DESTDIR}/etc/xdg/skippy-xd.rc"
+	install -m 644 skippy-xd.sample.rc "${DESTDIR}${XDGDIR}/skippy-xd.rc.sample"
 
 uninstall:
 	# Should configuration file be removed?