(trunk) yet another stab at building version.h portably

autogen.sh

@@ -22,6 +22,8 @@ then
 fi
 export LIBTOOLIZE
 
+update-version-h.sh
+
 autoreconf -fi -I m4
 
 if test "$GETTEXTIZE"; then

configure.ac

@@ -5,14 +5,12 @@ dnl         "0" for stable, supported releases
 dnl these should be the only two lines you need to change
 m4_define([user_agent_prefix],[1.61+])
 m4_define([peer_id_prefix],[-TR161Z-])
-m4_define([svn_revision], esyscmd([sh -c "svnversion | sed -r 's/([0-9]+).*/\1/'"]))
 
 AC_INIT([transmission],
         [user_agent_prefix],
         [http://trac.transmissionbt.com/newticket])
 AC_SUBST(USERAGENT_PREFIX,[user_agent_prefix])
 AC_SUBST(PEERID_PREFIX,[peer_id_prefix])
-AC_SUBST(SVN_REVISION,[svn_revision])
 
 AC_CONFIG_MACRO_DIR([m4])
 
@@ -357,7 +355,6 @@ AC_CONFIG_FILES([Makefile
                  daemon/Makefile
                  doc/Makefile
                  libtransmission/Makefile
-                 libtransmission/version.h
                  third-party/Makefile
                  third-party/miniupnp/Makefile
                  third-party/libnatpmp/Makefile

libtransmission/version.h.in

@@ -1,6 +0,0 @@
-#define PEERID_PREFIX         "@PEERID_PREFIX@'"
-#define USERAGENT_PREFIX      "@USERAGENT_PREFIX@'"
-#define SVN_REVISION          "@SVN_REVISION@"
-#define SVN_REVISION_NUM      @SVN_REVISION@
-#define SHORT_VERSION_STRING  "@USERAGENT_PREFIX@"
-#define LONG_VERSION_STRING   "@USERAGENT_PREFIX@ (@SVN_REVISION@)"

update-version-h.sh

@@ -0,0 +1,29 @@
+user_agent_prefix=`grep m4_define configure.ac | sed "s/[][)(]/,/g" | grep user_agent_prefix  | cut -d , -f 6`
+
+peer_id_prefix=`grep m4_define configure.ac | sed "s/[][)(]/,/g" | grep peer_id_prefix  | cut -d , -f 6`
+
+if [ -d .svn ]; then
+    svn_revision=`svnversion | sed -r 's/([0-9]+).*/\1/' `
+else
+    svn_revision=`grep -oh '\$Id: [^ ]\+ [0-9]\+' */*\.cc */*\.cpp */*\.[chm] | cut -d ' ' -f 3 | sort | tail -n 1 -`
+fi
+
+cat > libtransmission/version.h.new << EOF
+#define PEERID_PREFIX         "${peer_id_prefix}"
+#define USERAGENT_PREFIX      "${user_agent_prefix}"
+#define SVN_REVISION          "${svn_revision}"
+#define SVN_REVISION_NUM      ${svn_revision}
+#define SHORT_VERSION_STRING  "${user_agent_prefix}"
+#define LONG_VERSION_STRING   "${user_agent_prefix} (${svn_revision})"
+EOF
+
+cmp -s libtransmission/version.h.new libtransmission/version.h
+cat libtransmission/version.h.new
+if [ $? -eq 0 ] # test exit status of "cmp" command.
+then
+  echo "no update needed to version.h"
+  rm libtransmission/version.h.new
+else  
+  echo "updated version.h"
+  mv libtransmission/version.h.new libtransmission/version.h
+fi