From 87432778bb0f103c8ea1bdb358228e94e65ade72 Mon Sep 17 00:00:00 2001
From: Xavi Hernandez <xhernandez@gmail.com>
Date: Mon, 27 Mar 2023 15:36:45 +0200
Subject: [PATCH] configure: force 'char' type to be signed (#4039)

On some systems, the 'char' type is interpreted as an unsigned char.
This may cause some issues as Gluster code assumes that 'char' is
signed.

This patch adds the '-fsigned-char' option during compilation to make
sure it works as expected.

Updates: #1000

Signed-off-by: Xavi Hernandez <xhernandez@gmail.com>
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5c99ceadf0..ef07fb2fc3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -270,6 +270,9 @@ if test "x$RPCGEN" = "xno"; then
    AC_MSG_ERROR([`rpcgen` not found, glusterfs needs `rpcgen` exiting..])
 fi
 
+# Force 'char' type to be signed
+CFLAGS="${CFLAGS} -fsigned-char"
+
 # Initialize CFLAGS before usage
 AC_ARG_ENABLE([debug],
               AC_HELP_STRING([--enable-debug],