Index: /branches/eam_branches/ohana.20160226/configure.tcsh
===================================================================
--- /branches/eam_branches/ohana.20160226/configure.tcsh	(revision 39428)
+++ /branches/eam_branches/ohana.20160226/configure.tcsh	(revision 39429)
@@ -14,5 +14,5 @@
 set memcheck = 0
 set use_tcmalloc = 0
-set use_gnu99 = 0
+set use_gnu89 = 0
 set no_largefiles = 0
 set extra_safety_checks = 0
@@ -90,6 +90,7 @@
    set use_tcmalloc = 1
    breaksw;
-  case --use-gnu99
-   set use_gnu99 = 1
+  case --use-gnu89
+   set use_gnu89 = 1
+   echo "---- warning : gnu89 is now deprecated"
    breaksw;
   case --no-largefiles
@@ -216,8 +217,8 @@
 
 # use_gnu99
-if ($use_gnu99 || $extra_safety_checks) then
+if ($use_gnu89 && ($extra_safety_checks == 0)) then
+    set CFLAGS = "$CFLAGS -std=gnu89"
+else
     set CFLAGS = "$CFLAGS -std=gnu99"
-else
-    set CFLAGS = "$CFLAGS -std=gnu89"
 endif
 
@@ -728,5 +729,5 @@
   --pedantic                include -Wall -Werror on compilation
   --use-tcmalloc            use the alternate tcmalloc from Google
-  --use-gnu99               use gnu99 flags to ensure C99 compatibility
+  --use-gnu89               use gnu89 for possible backwards compatibility (probably will not work)
   --no-largefiles           skip large file compatibility
   --enable-no-as-needed     pass --no-as-needed flag to linker