From d994d4702855cc3c19a3ed0beafbb7a79d8a34cc Mon Sep 17 00:00:00 2001
From: William S Fulton <wsf@fultondesigns.co.uk>
Date: Thu, 13 Dec 2012 22:37:09 +0000
Subject: [PATCH] Check for yodl >= 2.02. 1.31.18 is known not to work and
 2.01.00 to 2.01.03 gave an error message

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@13959 626c5289-ae23-0410-ae9c-e8d60b6d4f22
---
 configure.in | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/configure.in b/configure.in
index ef7c2d0b7..1c31b74a0 100644
--- a/configure.in
+++ b/configure.in
@@ -118,7 +118,7 @@ AC_SUBST(ENABLE_CCACHE)
 
 echo ""
 echo "Checking packages required for SWIG developers."
-echo "Note : None of the following packages are required for users to compile and install SWIG"
+echo "Note : None of the following packages are required for users to compile and install SWIG from the distributed tarball"
 echo ""
 
 AC_PROG_YACC
@@ -128,11 +128,22 @@ AC_SUBST(AR)
 AC_CHECK_PROGS(YODL2MAN, yodl2man)
 AC_CHECK_PROGS(YODL2HTML, yodl2html)
 
+if test -n "$YODL2MAN"; then
+  AC_MSG_CHECKING([yodl2man version >= 2.02])
+  yodl_version=`$YODL2MAN --version 2>&1 | grep 'yodl version' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.*[0-9]*\).*/\1/g'`
+  AX_COMPARE_VERSION([$yodl_version],[ge],[2.02], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no - $yodl_version found])])
+fi
+
+if test -n "$YODL2HTML"; then
+  AC_MSG_CHECKING([yodl2html version >= 2.02])
+  yodl_version=`$YODL2HTML --version 2>&1 | grep 'yodl version' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`
+  AX_COMPARE_VERSION([$yodl_version],[ge],[2.02], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no - $yodl_version found])])
+fi
 
 echo ""
 echo "Checking for installed target languages and other information in order to compile and run"
 echo "the examples and test-suite invoked by 'make check'."
-echo "Note : None of the following packages are required for users to compile and install SWIG"
+echo "Note : None of the following packages are required for users to compile and install SWIG from the distributed tarball"
 echo ""
 
 dnl Some test cases require Boost