From 00994ac08cb84937ca1e35b7a556d8924229bacb Mon Sep 17 00:00:00 2001
From: Dan Nicholson <dbn.lists@gmail.com>
Date: Wed, 30 Apr 2008 15:06:00 -0700
Subject: [PATCH] autoconf: Scrape the version from configs/default

Added the make script version.mk to print the various version numbers
from configs/default. This is used to substitute the version in autoconf
rather than duplicating it in both places.
---
 bin/version.mk    | 17 +++++++++++++++++
 configs/default   |  1 +
 configure.ac      | 14 ++++++++++----
 docs/devinfo.html |  4 ++--
 4 files changed, 30 insertions(+), 6 deletions(-)
 create mode 100755 bin/version.mk

diff --git a/bin/version.mk b/bin/version.mk
new file mode 100755
index 00000000000..ab20d79daee
--- /dev/null
+++ b/bin/version.mk
@@ -0,0 +1,17 @@
+#!/usr/bin/make -sf
+# Print the various Mesa version fields. This is mostly used to add the
+# version to configure.
+
+# This reflects that this script is usually called from the toplevel
+TOP = .
+
+include $(TOP)/configs/default
+
+version:
+	@echo $(MESA_VERSION)
+major:
+	@echo $(MESA_MAJOR)
+minor:
+	@echo $(MESA_MINOR)
+tiny:
+	@echo $(MESA_TINY)
diff --git a/configs/default b/configs/default
index cbdb3b2ada8..d65847851ab 100644
--- a/configs/default
+++ b/configs/default
@@ -11,6 +11,7 @@ CONFIG_NAME = default
 MESA_MAJOR=7
 MESA_MINOR=1
 MESA_TINY=0
+MESA_VERSION = $(MESA_MAJOR).$(MESA_MINOR).$(MESA_TINY)
 
 # external projects.  This should be useless now that we use libdrm.
 DRM_SOURCE_PATH=$(TOP)/../drm
diff --git a/configure.ac b/configure.ac
index 1e9a7981f8b..fc8c3461381 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,11 +2,17 @@ dnl Process this file with autoconf to create configure.
 
 AC_PREREQ(2.59)
 
-dnl Versioning
-dnl Make version number available to autoconf and configure
-m4_define([mesa_version],[7.1.0])
+dnl Versioning - scrape the version from configs/default
+m4_define([mesa_version],
+    [m4_esyscmd([${MAKE-make} -s -f bin/version.mk version | tr -d '\n'])])
+m4_ifval(mesa_version,[],[
+    m4_errprint([Error: Failed to get the Mesa version from the output of
+       running `make -f bin/version.mk version'
+])
+    m4_exit([1])
+])
 
-AC_INIT([Mesa],[mesa_version()],
+AC_INIT([Mesa],[mesa_version],
     [https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa])
 AC_CONFIG_AUX_DIR(bin)
 AC_CANONICAL_HOST
diff --git a/docs/devinfo.html b/docs/devinfo.html
index 1f54a92d0f5..3cebf5f36db 100644
--- a/docs/devinfo.html
+++ b/docs/devinfo.html
@@ -136,11 +136,11 @@ Update the docs/VERSIONS file too.
 
 <p>
 Edit the MESA_MAJOR, MESA_MINOR and MESA_TINY version numbers in
-configs/default and configure.ac.
+configs/default.
 </p>
 
 <p>
-Make sure the values in src/mesa/main/version.h is correct.
+Make sure the values in src/mesa/main/version.h are correct.
 </p>
 
 <p>
-- 
2.30.2