build_tools: Allow Asterisk to report git SHAs in version string.

Make git more attractive for managing work-in-progress.  Especially
convenient when a potential patch set needs to be tested on multiple
platforms since one can use git to keep all the test environments in sync
independent of a subversion server.

Now the Asterisk version will show the exact git SHA5 that was used when
building (still appended by "M" if there are local modifications) from a
git clone of the Asterisk repository so the developer can more easily know
what is actually under test.

You will now get this:

  $ asterisk -V
  Asterisk GIT-1698298

Instead of this:

  $ asterisk -V
  Asterisk UNKNOWN__and_probably_unsupported

This has zero impact for those not using git with the exception of an
extra test in the configure script to gather git's path.  This is
necessary to prevent "sudo make install" from failing since git may not be
in the path in make's shell environment.

(closes issue ASTERISK-20483)
Reported by: Shaun Ruffell
Patches:
      0001-build_tools-Allow-Asterisk-to-report-git-SHAs-in-ver.patch (license #5417) patch uploaded by Shaun Ruffell
      Modified
........

Merged revisions 375189 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@375190 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -208,7 +208,7 @@ ifeq ($(OSARCH),SunOS)
   _ASTCFLAGS+=-Wcast-align -DSOLARIS -I../include/solaris-compat -I/opt/ssl/include -I/usr/local/ssl/include -D_XPG4_2 -D__EXTENSIONS__
 endif
 
-ASTERISKVERSION:=$(shell GREP=$(GREP) AWK=$(AWK) build_tools/make_version .)
+ASTERISKVERSION:=$(shell GREP=$(GREP) AWK=$(AWK) GIT=$(GIT) build_tools/make_version .)
 
 ifneq ($(wildcard .version),)
   ASTERISKVERSIONNUM:=$(shell $(AWK) -F. '{printf "%01d%02d%02d", $$1, $$2, $$3}' .version)

build_tools/make_version

@@ -2,7 +2,7 @@
 
 if [ -f ${1}/.version ]; then
     cat ${1}/.version
-elif [ -d .svn ]; then
+elif [ -d ${1}/.svn ]; then
     PARTS=`LANG=C svn info ${1} | ${GREP} URL | ${AWK} '{print $2;}' | sed -e 's:^.*/svn/asterisk/::' | sed -e 's:/: :g'`
     BRANCH=0
     TEAM=0
@@ -36,11 +36,7 @@ elif [ -d .svn ]; then
         fi
 
         if [ ${BRANCH} != 0 ] ; then
-            if [ -z "${RESULT}" ] ; then
-                RESULT="${PART}"
-            else
-                RESULT="${RESULT}-${PART}"
-            fi
+            RESULT="${RESULT}-${PART}"
             if [ ${FEATURE} != 0 ] ; then
                 RESULT="${RESULT}-${FEATURE_NAME}"
             fi
@@ -84,6 +80,104 @@ elif [ -d .svn ]; then
     else
         echo SVN-${RESULT}-r${REV}${BASE:+-${BASE}}
     fi
+elif [ -d ${1}/.git ]; then
+    if [ -z ${GIT} ]; then
+        GIT="git"
+    fi
+
+    if ! command -v ${GIT} >/dev/null 2>&1; then
+        echo "UNKNOWN__and_probably_unsupported"
+        exit 1
+    fi
+    # If the first log commit messages indicates that this is checked into
+    # subversion, we'll just use the SVN- form of the revision.
+    MODIFIED=""
+    SVN_REV=`${GIT} log --pretty=full -1 | grep -F "git-svn-id:" | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
+    if [ -z "$SVN_REV" ]; then
+        VERSION=GIT-`${GIT} describe --long --always --tags --dirty=M 2> /dev/null`
+        if [ $? -ne 0 ]; then
+            if [ "`${GIT} ls-files -m | wc -l`" != "0" ]; then
+                MODIFIED="M"
+            fi
+            # Some older versions of git do not support all the above
+            # options.
+            VERSION=GIT-`${GIT} rev-parse --short --verify HEAD`${MODIFIED}
+        fi
+        echo ${VERSION}
+    else
+        PARTS=`LANG=C ${GIT} log --pretty=full | grep -F "git-svn-id:" | head -1 | awk '{print $2;}' | sed -e s:^.*/svn/$2/:: | sed -e 's:/: :g' | sed -e 's/@.*$//g'`
+        BRANCH=0
+        TEAM=0
+        TAG=0
+        FEATURE=0
+
+        if [ "`${GIT} ls-files -m | wc -l`" != "0" ]; then
+            MODIFIED="M"
+        fi
+
+        for PART in $PARTS ; do
+            if [ ${TAG} != 0 ] ; then
+                if [ "${PART}" = "autotag_for_be" ] ; then
+                    continue
+                fi
+                if [ "${PART}" = "autotag_for_sx00i" ] ; then
+                    continue
+                fi
+                RESULT="${PART}"
+                break
+            fi
+
+            if [ ${BRANCH} != 0 ] ; then
+                RESULT="${RESULT}-${PART}"
+                if [ ${FEATURE} != 0 ] ; then
+                    RESULT="${RESULT}-${FEATURE_NAME}"
+                fi
+                break
+            fi
+
+            if [ ${TEAM} != 0 ] ; then
+                if [ -z "${RESULT}" ] ; then
+                    RESULT="${PART}"
+                else
+                    RESULT="${RESULT}-${PART}"
+                fi
+                continue
+            fi
+
+            if [ "${PART}" = "certified" ] ; then
+                FEATURE=1
+                FEATURE_NAME="cert"
+                continue
+            fi
+
+            if [ "${PART}" = "branches" ] ; then
+                BRANCH=1
+                RESULT="branch"
+                continue
+            fi
+
+            if [ "${PART}" = "tags" ] ; then
+                TAG=1
+                continue
+            fi
+
+            if [ "${PART}" = "team" ] ; then
+                TEAM=1
+                continue
+            fi
+
+            if [ "${PART}" = "trunk" ]; then
+                echo SVN-trunk-r${SVN_REV}${MODIFIED}
+                exit 0
+            fi
+        done
+
+        if [ ${TAG} != 0 ] ; then
+            echo ${RESULT}
+        else
+            echo SVN-${RESULT##-}-r${SVN_REV}${MODIFIED}
+        fi
+    fi
 else
     echo "UNKNOWN__and_probably_unsupported"
 fi

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 361956 .
+# From configure.ac Revision: 371013 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.63 for asterisk trunk.
 #
@@ -1079,6 +1079,7 @@ PBX_FLEX
 PBX_BISON
 DOWNLOAD
 FETCH
+GIT
 XMLSTARLET
 XMLLINT
 KPATHSEA
@@ -7393,6 +7394,47 @@ $as_echo "no" >&6; }
 fi
 
 
+# Extract the first word of "git", so it can be a program name with args.
+set dummy git; ac_word=$2
+{ $as_echo "$as_me:$LINENO: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_GIT+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  case $GIT in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_GIT="$GIT" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_path_GIT="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_GIT" && ac_cv_path_GIT=":"
+  ;;
+esac
+fi
+GIT=$ac_cv_path_GIT
+if test -n "$GIT"; then
+  { $as_echo "$as_me:$LINENO: result: $GIT" >&5
+$as_echo "$GIT" >&6; }
+else
+  { $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
 if test "${WGET}" != ":" ; then
   DOWNLOAD=${WGET}
 else if test "${CURL}" != ":" ; then

configure.ac

@@ -261,6 +261,7 @@ AC_PATH_PROG([CATDVI], [catdvi], :)
 AC_PATH_PROG([KPATHSEA], [kpsewhich], :)
 AC_PATH_PROG([XMLLINT], [xmllint], :)
 AC_PATH_PROG([XMLSTARLET], [xmlstarlet], :)
+AC_PATH_PROG([GIT], [git], :)
 if test "${WGET}" != ":" ; then
   DOWNLOAD=${WGET}
 else if test "${CURL}" != ":" ; then

makeopts.in

@@ -34,6 +34,7 @@ XMLSTARLET=@XMLSTARLET@
 MD5=@MD5@
 SHA1SUM=@SHA1SUM@
 OPENSSL=@OPENSSL@
+GIT=@GIT@
 
 BUILD_PLATFORM=@BUILD_PLATFORM@
 BUILD_CPU=@BUILD_CPU@