[Sheepdog] [PATCH] add version information

[MORITA Kazutaka]

The version string is auto-generated by git commit hash values.

Signed-off-by: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>
---
 Makefile        |    4 +++-
 collie/Makefile |    2 +-
 collie/collie.c |    6 ++++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index bbe8d85..b28b162 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,8 @@
+VERSION ?= $(shell git log -1 --format=%h-%p || echo "unknown-version")
+
 PREFIX ?= /usr
 
-export PREFIX
+export VERSION PREFIX
 
 .PHONY:all
 all:
diff --git a/collie/Makefile b/collie/Makefile
index 5e4beb0..2bfc9c6 100644
--- a/collie/Makefile
+++ b/collie/Makefile
@@ -1,7 +1,7 @@
 sbindir ?= $(PREFIX)/sbin
 
 CFLAGS += -g -O2 -Wall -Wstrict-prototypes -I../include
-CFLAGS += -D_GNU_SOURCE
+CFLAGS += -D_GNU_SOURCE -DSD_VERSION=\"$(VERSION)\"
 LIBS += -lpthread -lcpg
 
 PROGRAMS = collie
diff --git a/collie/collie.c b/collie/collie.c
index 6c247ab..da2a68a 100644
--- a/collie/collie.c
+++ b/collie/collie.c
@@ -38,12 +38,12 @@ static void usage(int status)
 	else {
 		printf("Usage: %s [OPTION] [PATH]\n", program_name);
 		printf("\
-Sheepdog Daemon\n\
+Sheepdog Daemon, version %s\n\
   -p, --port              specify the listen port number\n\
   -f, --foreground        make the program run in the foreground\n\
   -d, --debug             print debug messages\n\
   -h, --help              display this help and exit\n\
-");
+", SD_VERSION);
 	}
 	exit(status);
 }
@@ -110,6 +110,8 @@ int main(int argc, char **argv)
 	if (ret)
 		exit(1);
 
+	dprintf("Sheepdog daemon (version %s) started\n", SD_VERSION);
+
 	event_loop(-1);
 
 	return 0;
-- 
1.6.5