From 6b10babaeb538f50fefa86baf870568870b93af3 Mon Sep 17 00:00:00 2001
From: nedko <nedko@0c269be4-1314-0410-8aa9-9f06e86f4224>
Date: Sun, 31 Aug 2008 12:44:55 +0000
Subject: [PATCH] improved svn version define regeneration

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2850 0c269be4-1314-0410-8aa9-9f06e86f4224
---
 linux/dbus/jackdbus.c    |  3 +-
 svnversion_regenerate.sh | 52 ++++++++++++++++++++++++++++++++++
 wscript                  | 61 +++++++++++++++++++++++++++++++---------
 3 files changed, 102 insertions(+), 14 deletions(-)
 create mode 100755 svnversion_regenerate.sh

diff --git a/linux/dbus/jackdbus.c b/linux/dbus/jackdbus.c
index d3d44bef..685ad8b8 100644
--- a/linux/dbus/jackdbus.c
+++ b/linux/dbus/jackdbus.c
@@ -42,6 +42,7 @@
 #include "jack/jslist.h"
 #include "jack/control.h"
 #include "sigsegv.h"
+#include "svnversion.h"
 
 FILE *g_logfile;
 char *g_jackdbus_config_dir;
@@ -760,7 +761,7 @@ main (int argc, char **argv)
     setup_sigsegv();
 
     jack_info("------------------");
-    jack_info("Controller activated. Version %s (%s) built on %s", jack_get_version_string(), JACK_SVNREVISION, timestamp_str);
+    jack_info("Controller activated. Version %s (%s) built on %s", jack_get_version_string(), SVN_VERSION, timestamp_str);
 
     if (!dbus_threads_init_default())
     {
diff --git a/svnversion_regenerate.sh b/svnversion_regenerate.sh
new file mode 100755
index 00000000..be3864d1
--- /dev/null
+++ b/svnversion_regenerate.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+#set -x
+
+if test $# -ne 1 -a $# -ne 2
+then
+  echo "Usage: "`basename "$0"`" <file> [define_name]"
+  exit 1
+fi
+
+OUTPUT_FILE="`pwd`/${1}"
+TEMP_FILE="${OUTPUT_FILE}.tmp"
+
+#echo svnversion...
+#pwd
+#echo $OUTPUT_FILE
+#echo $TEMP_FILE
+
+pushd .. > /dev/null
+
+if test $# -eq 2
+then
+  DEFINE=${2}
+else
+  DEFINE=SVN_VERSION
+fi
+
+REV=`svnversion 2> /dev/null`
+if test -z ${REV}
+then
+  REV="unknown"
+fi
+
+echo "#define ${DEFINE} \"${REV}\"" > ${TEMP_FILE}
+if test ! -f ${OUTPUT_FILE}
+then
+  echo "Generated ${OUTPUT_FILE} (r${REV})"
+  cp ${TEMP_FILE} ${OUTPUT_FILE}
+  if test $? -ne 0; then exit 1; fi
+else
+  if ! cmp -s ${OUTPUT_FILE} ${TEMP_FILE}
+  then echo "Regenerated ${OUTPUT_FILE} (r${REV})"
+    cp ${TEMP_FILE} ${OUTPUT_FILE}
+    if test $? -ne 0; then exit 1; fi
+  fi
+fi
+
+popd > /dev/null
+
+rm ${TEMP_FILE}
+
+exit $?
diff --git a/wscript b/wscript
index f08b820d..0262c855 100644
--- a/wscript
+++ b/wscript
@@ -7,6 +7,8 @@ import commands
 from Configure import g_maxlen
 #g_maxlen = 40
 import shutil
+import Task
+import re
 
 VERSION='1.9.0'
 APPNAME='jack'
@@ -32,16 +34,29 @@ def display_feature(msg, build):
     else:
         display_msg(msg, "no", 'YELLOW')
 
-def fetch_svn_revision(path):
-    svn_revision_file = "svnrev"
-    if os.access(svn_revision_file, os.R_OK):
-         f = open(svn_revision_file, 'r')
-         return f.read()
-        
-    cmd = "LANG= "
-    cmd += "svnversion "
-    cmd += path
-    return commands.getoutput(cmd)
+def create_svnversion_gen(bld, header='svnversion.h', define=None):
+    cmd = '../svnversion_regenerate.sh ${TGT}'
+    if define:
+        cmd += " " + define
+    cls = Task.simple_task_type('svnversion', cmd, color='BLUE')
+    cls.must_run = lambda self: True
+    #cls.before = 'cxx'
+
+    def sg(self):
+        rt = Params.h_file(self.m_outputs[0].abspath(self.env()))
+        return rt
+    cls.signature = sg
+
+    #def se(self):
+    #    r = sg(self)
+    #    return (r, r, r, r, r)
+    #cls.cache_sig = property(sg, None)
+    cls.cache_sig = None
+
+    tsk = cls('svnversion', bld.env().copy())
+    tsk.m_inputs = []
+    tsk.m_outputs = [bld.path.find_or_declare(header)]
+    tsk.prio = 1 # execute this task first
 
 def set_options(opt):
     # options provided by the modules
@@ -91,7 +106,6 @@ def configure(conf):
         conf.define('MACH_RPC_MACH_SEMA', 1)
     conf.define('__SMP__', 1)
     conf.define('USE_POSIX_SHM', 1)
-    conf.define('JACK_SVNREVISION', fetch_svn_revision('.'))
     conf.define('JACKMP', 1)
     if conf.env['BUILD_JACKDBUS'] == True:
         conf.define('JACK_DBUS', 1)
@@ -99,9 +113,23 @@ def configure(conf):
         conf.define('JACK_MONITOR', 1)
     conf.write_config_header('config.h')
 
-    display_msg("\n==================")
-    display_msg("JACK %s %s" % (VERSION, conf.get_define('JACK_SVNREVISION')))
+    svnrev = None
+    if os.access('svnversion.h', os.R_OK):
+        data = file('svnversion.h').read()
+        m = re.match(r'^#define SVN_VERSION "([^"]*)"$', data)
+        if m != None:
+            svnrev = m.group(1)
+
+    print
+    display_msg("==================")
+    version_msg = "JACK " + VERSION
+    if svnrev:
+        version_msg += " exported from r" + svnrev
+    else:
+        version_msg += " svn revision will checked and eventually updated during build"
+    print version_msg
     print
+
     display_msg("Install prefix", conf.env['PREFIX'], 'CYAN')
     display_msg("Drivers directory", conf.env['ADDON_DIR'], 'CYAN')
     display_feature('Build doxygen documentation', conf.env['BUILD_DOXYGEN_DOCS'])
@@ -130,6 +158,9 @@ def configure(conf):
     print
 
 def build(bld):
+    if not os.access('svnversion.h', os.R_OK):
+        create_svnversion_gen(bld)
+
     # process subfolders from here
     bld.add_subdirs('common')
     if bld.env()['IS_LINUX']:
@@ -172,3 +203,7 @@ def build(bld):
                 os.popen("doxygen").read()
             else:
                 Params.pprint('CYAN', "doxygen documentation already built.")
+
+def dist_hook():
+    os.remove('svnversion_regenerate.sh')
+    os.system('../svnversion_regenerate.sh svnversion.h')