[gnome-pilot] Add gob2.m4 for gnome-pilot. Closes #584904.

[Halton Huo <haltonhuo src gnome org>]

commit 5a1b9dd182b3668f2dd7448a7e82822f3a668ef1
Author: Halton Huo <halton huo sun com>
Date:   Fri Aug 7 10:32:42 2009 +0800

    Add gob2.m4 for gnome-pilot. Closes #584904.

 Makefile.am    |    1 +
 configure.in   |    2 +
 macros/gob2.m4 |   58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 61 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 306ce24..1cd1c23 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -32,6 +32,7 @@ changelogs =				\
 EXTRA_DIST=			\
 	$(changelogs)		\
 	macros/compiler-flags.m4 \
+	macros/gob2.m4		\
 	conduit.mk		\
 	server.mk		\
 	intltool-extract.in	\
diff --git a/configure.in b/configure.in
index 93e089c..9e5ff3f 100644
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,6 @@
 AC_INIT(Makefile.am)
+AC_CONFIG_MACRO_DIR([macros])
+AC_SUBST(ACLOCAL_AMFLAGS, "$ACLOCAL_FLAGS -I macros")
 
 dnl ******************************
 dnl Version
diff --git a/macros/gob2.m4 b/macros/gob2.m4
new file mode 100644
index 0000000..b3659fa
--- /dev/null
+++ b/macros/gob2.m4
@@ -0,0 +1,58 @@
+dnl
+dnl GOB_HOOK(script if found, fail)
+dnl if fail = "failure", abort if GOB not found
+dnl
+
+
+AC_DEFUN([GOB2_HOOK],[
+	AC_PATH_PROG(GOB2,gob2)
+	if test ! x$GOB2 = x; then	
+		if test ! x$1 = x; then 
+			AC_MSG_CHECKING(for gob-2 >= $1)
+			g_r_ve=`echo $1|sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+			g_r_ma=`echo $1|sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+			g_r_mi=`echo $1|sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+			g_ve=`$GOB2 --version 2>&1|sed 's/Gob version \([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+			g_ma=`$GOB2 --version 2>&1|sed 's/Gob version \([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+			g_mi=`$GOB2 --version 2>&1|sed 's/Gob version \([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+
+			if test $g_ve -eq $g_r_ve; then
+				if test $g_ma -ge $g_r_ma; then
+					if test $g_mi -ge $g_r_mi; then
+						AC_MSG_RESULT(ok)
+					else
+						if test $g_ma -gt $g_r_ma; then
+							AC_MSG_RESULT(ok)
+						else
+							AC_MSG_ERROR("found $g_ve.$g_ma.$g_mi requires $g_r_ve.$g_r_ma.$g_r_mi")
+						fi
+					fi
+				else
+					AC_MSG_ERROR("found $g_ve.$g_ma.$g_mi requires $g_r_ve.$g_r_ma.$g_r_mi")
+				fi
+			else
+				if test $g_ve -gt $g_r_ve; then
+					AC_MSG_RESULT(ok)
+				else
+					AC_MSG_ERROR(major version $g_ve found but $g_r_ve required)
+				fi
+			fi
+	
+			unset gob_version
+			unset g_ve
+			unset g_ma
+			unset g_mi
+			unset g_r_ve
+			unset g_r_ma
+			unset g_r_mi
+		fi
+		AC_SUBST(GOB2)
+		$2
+	else		
+		$3
+	fi
+])
+
+AC_DEFUN([GOB2_CHECK],[
+	GOB2_HOOK($1,[],[AC_MSG_WARN([Cannot find GOB-2, check http://www.5z.com/jirka/gob.html])])
+])