Turn off exception handling for irix 6.x builds as it fixes a bug with out-of-scope gotos. Bug #25562. Thanks to <jsd@igroup.org> for the suggested fix.

configure

@@ -4164,7 +4164,7 @@ EOF
        MKSHLIB_FORCE_ALL='-all'
        MKSHLIB_UNFORCE_ALL='-none'
        CFLAGS="$CFLAGS -woff 3262"
-       CXXFLAGS="$CXXFLAGS -woff 3262"
+       CXXFLAGS="$CXXFLAGS -woff 3262 -LANG:exceptions=OFF"
        if test -n "$USE_N32"; then
 	   CFLAGS="$CFLAGS -n32"
 	   CXXFLAGS="$CXXFLAGS -n32"

configure.in

@@ -631,7 +631,7 @@ case "$target" in
        MKSHLIB_FORCE_ALL='-all'
        MKSHLIB_UNFORCE_ALL='-none'
        CFLAGS="$CFLAGS -woff 3262"
-       CXXFLAGS="$CXXFLAGS -woff 3262"
+       CXXFLAGS="$CXXFLAGS -woff 3262 -LANG:exceptions=OFF"
        if test -n "$USE_N32"; then
 	   CFLAGS="$CFLAGS -n32"
 	   CXXFLAGS="$CXXFLAGS -n32"