From 1e19ffdc01a94b485b61b824ce2fa9e440e36ae7 Mon Sep 17 00:00:00 2001
From: Xavier Leroy <xavier.leroy@inria.fr>
Date: Fri, 10 Apr 2015 14:39:12 +0200
Subject: When using gcc as a preprocessor, put it in C99 mode. As opposed to
 the default "gnu99" mode, the C99 mode turns off a number of GNU-isms in
 standard header files like those of glibc.

---
 configure | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/configure b/configure
index 53d43832..46dc98da 100755
--- a/configure
+++ b/configure
@@ -94,7 +94,7 @@ case "$target" in
     esac
     system="linux"
     cc="${toolprefix}gcc"
-    cprepro="${toolprefix}gcc -U__GNUC__ -E"
+    cprepro="${toolprefix}gcc -std=c99 -U__GNUC__ -E"
     casm="${toolprefix}gcc -c"
     casmruntime="${toolprefix}gcc -c -Wa,-mregnames"
     clinker="${toolprefix}gcc"
@@ -138,7 +138,7 @@ case "$target" in
     struct_return="int1-4"
     system="linux"
     cc="${toolprefix}gcc"
-    cprepro="${toolprefix}gcc -U__GNUC__ '-D__REDIRECT(name,proto,alias)=name proto' '-D__REDIRECT_NTH(name,proto,alias)=name proto' -E"
+    cprepro="${toolprefix}gcc -std=c99 -U__GNUC__ '-D__REDIRECT(name,proto,alias)=name proto' '-D__REDIRECT_NTH(name,proto,alias)=name proto' -E"
     casm="${toolprefix}gcc -c"
     clinker="${toolprefix}gcc"
     libmath="-lm";;
@@ -150,7 +150,7 @@ case "$target" in
     struct_return="ref"
     system="linux"
     cc="${toolprefix}gcc -m32"
-    cprepro="${toolprefix}gcc -m32 -U__GNUC__ -E"
+    cprepro="${toolprefix}gcc -std=c99 -m32 -U__GNUC__ -E"
     casm="${toolprefix}gcc -m32 -c"
     clinker="${toolprefix}gcc -m32"
     libmath="-lm";;
@@ -162,7 +162,7 @@ case "$target" in
     struct_return="int1248"    # to check!
     system="bsd"
     cc="${toolprefix}gcc -m32"
-    cprepro="${toolprefix}gcc -m32 -U__GNUC__ -E"
+    cprepro="${toolprefix}gcc -std=c99 -m32 -U__GNUC__ -E"
     casm="${toolprefix}gcc -m32 -c"
     clinker="${toolprefix}gcc -m32"
     libmath="-lm";;
@@ -174,7 +174,7 @@ case "$target" in
     struct_return="int1248"
     system="macosx"
     cc="${toolprefix}gcc -arch i386"
-    cprepro="${toolprefix}gcc -arch i386 -U__GNUC__ -U__clang__ -U__BLOCKS__ '-D__attribute__(x)=' '-D__asm(x)=' -E"
+    cprepro="${toolprefix}gcc -std=c99 -arch i386 -U__GNUC__ -U__clang__ -U__BLOCKS__ '-D__attribute__(x)=' '-D__asm(x)=' -E"
     casm="${toolprefix}gcc -arch i386 -c"
     case `uname -r` in
       [1-9].*|10.*|11.*)    # up to MacOS 10.7 included
@@ -191,7 +191,7 @@ case "$target" in
     struct_return="ref"
     system="cygwin"
     cc="${toolprefix}gcc -m32"
-    cprepro="${toolprefix}gcc -m32 -U__GNUC__ -E"
+    cprepro="${toolprefix}gcc -std=c99 -m32 -U__GNUC__ -E"
     casm="${toolprefix}gcc -m32 -c"
     clinker="${toolprefix}gcc -m32"
     libmath="-lm";;
-- 
cgit