From 8531c612d3f1bce55c574e4e201f09178d2c1f02 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik@fiktivkod.org>
Date: Wed, 22 Jun 2011 00:28:32 +0200
Subject: [PATCH] adding version information to build.

---
 .gitignore     |  1 +
 Makefile       | 10 +++++++++-
 VERSION-GEN    | 18 ++++++++++++++++++
 src/archived.c |  3 +++
 4 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100755 VERSION-GEN

diff --git a/.gitignore b/.gitignore
index b97968f..187b62b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 *.o
 archived
 Makefile.local.mk
+VERSION
 test/test_*
 nbproject
 config.ini
diff --git a/Makefile b/Makefile
index 5199ffe..c0d1b0e 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,7 @@
 #
 # Archived Makefile
 #
+all::
 
 CC       = gcc
 CFLAGS	 = -O2 -Wall -Ilib
@@ -27,10 +28,14 @@ else
 	obj += $(obj-mysql)
 endif
 
+VERSION :
+	@$(SHELL) ./VERSION-GEN > VERSION
+-include VERSION
+
 .SUFFIXES: .c .o
 .PHONY : clean distclean
 
-all : $(PROGRAM)
+all:: $(PROGRAM)
 
 $(PROGRAM) : src/archived.o $(obj)
 	$(QUIET_LD)$(LD) $(sort $(^)) -o $@ $(LDFLAGS)
@@ -41,11 +46,14 @@ clean :
 	done
 	@make -C test clean
 	@make -C docs clean
+	$(RM) VERSION
 
 distclean : clean
 	$(RM) $(PROGRAM)
 	$(RM) Makefile.local.mk
 
+src/archived.o : CFLAGS += -DARCHIVED_VERSION='"$(ARCHIVED_VERSION)"'
+
 %.o : %.c
 	$(QUIET_CC)$(CC) $(CFLAGS) -c $< -o $@
 
diff --git a/VERSION-GEN b/VERSION-GEN
new file mode 100755
index 0000000..5a326ac
--- /dev/null
+++ b/VERSION-GEN
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+VERSION=$(git describe --tags --match "v[0-9]*" HEAD 2>/dev/null)
+
+if [ -n "$(git status --porcelain)" ]; then
+    VERSION="${VERSION}-dirty"
+fi
+
+if [ -f "${1}" ]; then
+    OLD=$(cat ${1} | sed 's/VERSION = //')
+else
+    OLD=""
+fi
+
+if [ "${VERSION}" != "${OLD}" ]; then
+    echo >&2 "  Archived ${VERSION}"
+    echo "ARCHIVED_VERSION = ${VERSION}"
+fi
diff --git a/src/archived.c b/src/archived.c
index c6fe1a2..5bc94ec 100644
--- a/src/archived.c
+++ b/src/archived.c
@@ -27,6 +27,9 @@
 #include "util.h"
 
 static const char *archived_usage_str =
+#ifdef ARCHIVED_VERSION
+    "Archived " ARCHIVED_VERSION "\n"
+#endif
     "Usage: archived [-c <config>] <root>\n"
     "       config - Path to the configuration file (default ./config.ini)\n"
     "       root   - Path to indexroot. All subdirectories will be indexed.\n";