From 47b34dd39850b8b157c67887d9b6bf7bd3095796 Mon Sep 17 00:00:00 2001
From: Elliot Ronaghan <ronawho@gmail.com>
Date: Thu, 7 Jul 2016 15:06:01 -0700
Subject: [PATCH] Disable irrelevant Cray compiler warnings if cc-silence is
 enabled

Cray is pretty warning-happy, so disable ones that aren't helpful. Each warning
has a numeric value instead of having named flags to disable specific warnings.
Disable warnings 128 and 1357.

128:  Ignore unreachable code warning. Cray warns about `not_reached()` not
      being reachable in a couple of places because it detects that some loops
      will never terminate.

1357: Ignore warning about redefinition of malloc and friends

With this patch, Cray 8.4.0 and 8.5.1 build cleanly and pass `make check`
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 13ce6860..e1639d51 100644
--- a/configure.ac
+++ b/configure.ac
@@ -195,6 +195,12 @@ if test "x$CFLAGS" = "x" ; then
       JE_CFLAGS_APPEND([-hipa2])
       JE_CFLAGS_APPEND([-hnognu])
     fi
+    if test "x$enable_cc_silence" != "xno" ; then
+      dnl ignore unreachable code warning
+      JE_CFLAGS_APPEND([-hnomessage=128])
+      dnl ignore redefinition of "malloc", "free", etc warning
+      JE_CFLAGS_APPEND([-hnomessage=1357])
+    fi
   fi
 fi
 dnl Append EXTRA_CFLAGS to CFLAGS, if defined.