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From fc04acfd948ac99d04a5dc08c78f3b13bc0c5c41 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 17 Aug 2020 10:50:51 -0700
Subject: [PATCH] Avoid duplicate definitions of IOPortBase

This fixed build with gcc10/-fno-common

Fixes
compiler.h:528: multiple definition of `IOPortBase';

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 hw/xfree86/common/compiler.h            | 2 +-
 hw/xfree86/os-support/linux/lnx_video.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/xfree86/common/compiler.h b/hw/xfree86/common/compiler.h
index 2b2008b..c7d617e 100644
--- a/hw/xfree86/common/compiler.h
+++ b/hw/xfree86/common/compiler.h
@@ -525,7 +525,7 @@ xf86WriteMmio32Le(__volatile__ void *base, const unsigned long offset,
 #define PORT_SIZE short
 #endif
 
-_X_EXPORT unsigned int IOPortBase;      /* Memory mapped I/O port area */
+extern _X_EXPORT unsigned int IOPortBase;      /* Memory mapped I/O port area */
 
 static __inline__ void
 outb(unsigned PORT_SIZE port, unsigned char val)
diff --git a/hw/xfree86/os-support/linux/lnx_video.c b/hw/xfree86/os-support/linux/lnx_video.c
index 04e4509..9dc7316 100644
--- a/hw/xfree86/os-support/linux/lnx_video.c
+++ b/hw/xfree86/os-support/linux/lnx_video.c
@@ -78,6 +78,7 @@ xf86OSInitVidMem(VidMemInfoPtr pVidMem)
 /***************************************************************************/
 /* I/O Permissions section                                                 */
 /***************************************************************************/
+_X_EXPORT unsigned int IOPortBase;      /* Memory mapped I/O port area */
 
 #if defined(__powerpc__)
 volatile unsigned char *ioBase = NULL;
-- 
2.28.0