From 55fb759ab3e7543a6be72a35e6b6961455c5b393 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Tue, 3 Jun 2014 22:36:35 -0400
Subject: Silence Bison deprecation warnings

Bison >=3.0 issues warnings about

    %name-prefix="base_yy"

instead of the now preferred

    %name-prefix "base_yy"

but the latter doesn't work with Bison 2.3 or less.  So for now we
silence the deprecation warnings.
---
 config/programs.m4 | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'config')

diff --git a/config/programs.m4 b/config/programs.m4
index fd3a9a4791..76c0158973 100644
--- a/config/programs.m4
+++ b/config/programs.m4
@@ -23,6 +23,14 @@ if test "$BISON"; then
 *** Bison version 1.875 or later is required, but this is $pgac_bison_version.])
     BISON=""
   fi
+  # Bison >=3.0 issues warnings about %name-prefix="base_yy", instead
+  # of the now preferred %name-prefix "base_yy", but the latter
+  # doesn't work with Bison 2.3 or less.  So for now we silence the
+  # deprecation warnings.
+  if echo "$pgac_bison_version" | $AWK '{ if ([$]4 >= 3) exit 0; else exit 1;}'
+  then
+    BISONFLAGS="$BISONFLAGS -Wno-deprecated"
+  fi
 fi
 
 if test -z "$BISON"; then
-- 
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