From d7144b2fa40b1be59e6250313c5e5f1a2bd8fb25 Mon Sep 17 00:00:00 2001
From: Dana Robinson <derobins@hdfgroup.org>
Date: Tue, 16 Jul 2019 03:49:50 -0500
Subject: Restored warnings for older gcc so jam can continue to creak along.

---
 config/gnu-flags | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/config/gnu-flags b/config/gnu-flags
index 9b61907..ae8ddb0 100644
--- a/config/gnu-flags
+++ b/config/gnu-flags
@@ -174,7 +174,6 @@ if test "X-gcc" = "X-$cc_vendor"; then
     H5_CFLAGS="$H5_CFLAGS -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wpacked"
     H5_CFLAGS="$H5_CFLAGS -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-enum -Wswitch-default"
     H5_CFLAGS="$H5_CFLAGS -Wundef -Wunused-macros -Wunsafe-loop-optimizations -Wwrite-strings"
-    H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2560"
 
     ######################
     # Developer warnings #
@@ -194,6 +193,12 @@ if test "X-gcc" = "X-$cc_vendor"; then
         H5_CFLAGS="$H5_CFLAGS -Wno-long-long"
     fi
 
+    # -Wvolatile-register-var was later incorporated into -Wall and              
+    # only needs to be specified explicitly for gcc 4.2-4.3                      
+    if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 2 -o $cc_vers_major -eq 4 -a $$cc_vers_minor -le 3; then
+        H5_CFLAGS="$H5_CFLAGS -Wvolatile-register-var"                           
+    fi 
+
     # -Wstrict-aliasing was later incorporated into -Wall and
     # only needs to be specified explicitly for gcc 4.5-4.6
     if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 5 -o $cc_vers_major -eq 4 -a $cc_vers_minor -le 6; then
@@ -201,7 +206,7 @@ if test "X-gcc" = "X-$cc_vendor"; then
     fi
 
     # The non-valued form of -Wstrict-overflow is used in gcc 4.2-4.4
-    if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 2 -o $cc_vers_major -eq 4 -a $cc_vers_minor -le 4; then
+    if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 2 -a $cc_vers_major -eq 4 -a $cc_vers_minor -le 4; then
         H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow"
     fi
 
@@ -215,6 +220,11 @@ if test "X-gcc" = "X-$cc_vendor"; then
     # Version-specific warnings #
     #############################
 
+    # gcc 4.3                                                                    
+    if test $cc_vers_major -ge 5 -o $cc_vers_major -eq 4 -a $cc_vers_minor -ge 3; then
+        H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2560"                   
+    fi 
+
     # gcc 4.4
     if test $cc_vers_major -ge 5 -o $cc_vers_major -eq 4 -a $cc_vers_minor -ge 4; then
         H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat"
-- 
cgit v0.12