From 29a36bb753f2ef0ba57a4095e6e51825e8b1534a Mon Sep 17 00:00:00 2001
From: Sebastian Harl <sh@tokkee.org>
Date: Sun, 2 May 2010 22:48:39 +0200
Subject: [PATCH] Moved generation of fb_features.h from configure to
 src/Makefile.

This ensures that we'll have up-to-date version information on each build. For
this purpose, version-gen.sh now creates a file ``version'' including the
current version.
---
 .gitignore      |  1 +
 configure.ac    | 15 +--------------
 src/Makefile.am | 15 +++++++++++++++
 version-gen.sh  | 20 ++++++++++++++++++++
 4 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/.gitignore b/.gitignore
index 69fab01..2c5f4c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,7 @@ depcomp
 install-sh
 missing
 stamp-h1
+version
 
 # ltdl stuff
 libtool
diff --git a/configure.ac b/configure.ac
index 97e3ca0..e1c988f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -190,22 +190,9 @@ build_date="`date --utc '+%F %T'` (UTC)"
 AC_DEFINE_UNQUOTED([BUILD_DATE], ["$build_date"],
 		[Define to the date the package has been built on.])
 
-dnl Version information provided by fb_features.h.
-FB_VERSION_MAJOR=`echo $PACKAGE_VERSION | cut -d'.' -f1`
-FB_VERSION_MINOR=`echo $PACKAGE_VERSION | cut -d'.' -f2`
-FB_VERSION_PATCH=`echo $PACKAGE_VERSION | cut -d'.' -f3`
-FB_VERSION_EXTRA=`echo $PACKAGE_VERSION | cut -d'.' -f4-`
-FB_VERSION_STRING="$FB_VERSION_MAJOR.$FB_VERSION_MINOR.$FB_VERSION_PATCH"
-
-AC_SUBST(FB_VERSION_MAJOR)
-AC_SUBST(FB_VERSION_MINOR)
-AC_SUBST(FB_VERSION_PATCH)
-AC_SUBST(FB_VERSION_EXTRA)
-AC_SUBST(FB_VERSION_STRING)
-
 AC_CHECK_HEADERS(libgen.h)
 
-AC_CONFIG_FILES([Makefile src/Makefile src/fb_features.h])
+AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT
 
 cat <<EOF;
diff --git a/src/Makefile.am b/src/Makefile.am
index 1c22316..5c8a5ce 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -13,3 +13,18 @@ bin_PROGRAMS = fb
 fb_SOURCES = fb.c foobar.h
 fb_LDADD = libfoobar.la
 
+../version: FORCE
+	@# As a side-effect, this updates ../version.
+	@echo Building $(PACKAGE_NAME) version $$( cd .. && ./version-gen.sh )
+
+fb_features.h: fb_features.h.in ../version
+	source ../version; sed \
+	    -e "s/@FB_VERSION_MAJOR@/$$VERSION_MAJOR/g" \
+	    -e "s/@FB_VERSION_MINOR@/$$VERSION_MINOR/g" \
+	    -e "s/@FB_VERSION_PATCH@/$$VERSION_PATCH/g" \
+	    -e "s/@FB_VERSION_EXTRA@/$$VERSION_EXTRA/g" \
+	    -e "s/@FB_VERSION_STRING@/$$VERSION_STRING/g" \
+	    fb_features.h.in > fb_features.h
+
+.PHONY: FORCE
+
diff --git a/version-gen.sh b/version-gen.sh
index ca8414d..5730071 100755
--- a/version-gen.sh
+++ b/version-gen.sh
@@ -17,3 +17,23 @@ fi
 VERSION="$( echo "$VERSION" | sed -e 's/-/./g' )"
 echo -n "$VERSION"
 
+OLD_VERSION=""
+if test -e version; then
+	OLD_VERSION=$( sed -ne 's/^VERSION="\(.*\)"/\1/p' version )
+fi
+
+if test "$OLD_VERSION" != "$VERSION"; then
+	VERSION_MAJOR=$( echo $VERSION | cut -d'.' -f1 )
+	VERSION_MINOR=$( echo $VERSION | cut -d'.' -f2 )
+	VERSION_PATCH=$( echo $VERSION | cut -d'.' -f3 )
+	VERSION_EXTRA="\"$( echo $VERSION | cut -d'.' -f4- )\""
+	(
+	 echo "VERSION=\"$VERSION\""
+	 echo "VERSION_MAJOR=$VERSION_MAJOR"
+	 echo "VERSION_MINOR=$VERSION_MINOR"
+	 echo "VERSION_PATCH=$VERSION_PATCH"
+	 echo "VERSION_EXTRA=\"$VERSION_EXTRA\""
+	 echo "VERSION_STRING=\"$VERSION_MAJOR.$VERSION_MINOR.$VERSION_PATCH\""
+	) > version
+fi
+
-- 
2.30.2