From f2d6dc360a7385dd490832bf9fb391addcb250a0 Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Sun, 24 Jun 2012 21:01:23 +0200
Subject: Auto-dependency generation
Modified example from GNU make manual[1] and [2]. Closes #221.
[1] http://www.gnu.org/software/make/manual/make.html#Automatic-Prerequisites
[2] http://make.paulandlesley.org/autodep.html
---
Makefile | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
(limited to 'Makefile')
diff --git a/Makefile b/Makefile
index d48a56e..aaed094 100644
--- a/Makefile
+++ b/Makefile
@@ -115,6 +115,21 @@ libpiano.so.0: ${LIBPIANO_RELOBJ} ${LIBPIANO_HDR} ${LIBWAITRESS_RELOBJ} \
@echo " AR libpiano.a"
@${AR} rcs libpiano.a ${LIBPIANO_OBJ} ${LIBWAITRESS_OBJ}
+
+# build dependency files
+%.d: %.c
+ @set -e; rm -f $@; \
+ $(CC) -M ${CFLAGS} -I ${LIBPIANO_INCLUDE} -I ${LIBWAITRESS_INCLUDE} \
+ ${LIBFAAD_CFLAGS} ${LIBMAD_CFLAGS} ${LIBGNUTLS_CFLAGS} \
+ ${LIBGCRYPT_CFLAGS} ${LIBJSONC_CFLAGS} $< > $@.$$$$; \
+ sed '1 s,^.*\.o[ :]*,$*.o $@ : ,g' < $@.$$$$ > $@; \
+ rm -f $@.$$$$
+
+-include $(PIANOBAR_SRC:.c=.d)
+-include $(LIBPIANO_SRC:.c=.d)
+-include $(LIBWAITRESS_SRC:.c=.d)
+
+# build standard object files
%.o: %.c
@echo " CC $<"
@${CC} ${CFLAGS} -I ${LIBPIANO_INCLUDE} -I ${LIBWAITRESS_INCLUDE} \
@@ -132,7 +147,8 @@ clean:
@echo " CLEAN"
@${RM} ${PIANOBAR_OBJ} ${LIBPIANO_OBJ} ${LIBWAITRESS_OBJ} ${LIBWAITRESS_OBJ}/test.o \
${LIBPIANO_RELOBJ} ${LIBWAITRESS_RELOBJ} pianobar libpiano.so* \
- libpiano.a waitress-test
+ libpiano.a waitress-test $(PIANOBAR_SRC:.c=.d) $(LIBPIANO_SRC:.c=.d) \
+ $(LIBWAITRESS_SRC:.c=.d)
all: pianobar
--
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