From 4e1ffdd17c2c95c88867d48966d1ad3e8a600bb7 Mon Sep 17 00:00:00 2001
From: Guido Cossu <guido.cossu@ed.ac.uk>
Date: Thu, 10 Nov 2016 18:44:36 +0000
Subject: [PATCH] Adding git info to the configure output

---
 configure.ac             |  8 ++++++++
 scripts/configure.commit | 19 +++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100755 scripts/configure.commit

diff --git a/configure.ac b/configure.ac
index 46fda677..944e53ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,9 @@ AC_CONFIG_SRCDIR([lib/Grid.h])
 AC_CONFIG_HEADERS([lib/Config.h])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
+################ Get git info
+#AC_REVISION([m4_esyscmd_s([./scripts/configure.commit])])
+
 ############### Checks for programs
 CXXFLAGS="-O3 $CXXFLAGS"
 AC_PROG_CXX
@@ -379,10 +382,15 @@ AC_CONFIG_FILES(tests/qdpxx/Makefile)
 AC_CONFIG_FILES(benchmarks/Makefile)
 AC_OUTPUT
 
+git_commit=`cd $srcdir && ./scripts/configure.commit`
+
 echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Summary of configuration for $PACKAGE v$VERSION
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+----- GIT VERSION -------------------------------------
+$git_commit
+
 ----- PLATFORM ----------------------------------------
 architecture (build)        : $build_cpu
 os (build)                  : $build_os
diff --git a/scripts/configure.commit b/scripts/configure.commit
new file mode 100755
index 00000000..77991392
--- /dev/null
+++ b/scripts/configure.commit
@@ -0,0 +1,19 @@
+
+
+#! /bin/sh
+# Display the SHA1 of the commit in which configure.ac was last modified.
+# If it's not checked in yet, use the SHA1 of HEAD plus -dirty.
+
+#
+
+if [ ! -d .git ] ; then
+  # if no .git directory, assume they're not using Git
+  printf 'unknown commit'
+elif git diff --quiet HEAD -- configure.ac ; then
+  # configure.ac is not modified
+  printf 'commit: %s\n' `git rev-parse --short HEAD -- configure.ac`
+  printf 'branch: %s\n' `git rev-parse --abbrev-ref HEAD`
+else # configure.ac is modified
+  printf 'commit: %s-dirty\n' `git rev-parse --short HEAD`
+  printf 'branch: %s\n' `git rev-parse --abbrev-ref HEAD`
+ fi
\ No newline at end of file