From 6766ab322a9eb8c73f8276be9cdea356eb124de0 Mon Sep 17 00:00:00 2001
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From: Baruch Siach <baruch@tkos.co.il>
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Date: Thu, 11 Nov 2021 07:58:10 +0200
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Subject: [PATCH] Fix build with musl libc
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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musl libc defines its own struct ethhdr that conflicts with the kernel
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define one. The kernel headers provide a way to suppress its struct
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ethhdr. For that to work the libc headers must precede the kernel. Move
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the kernel linux/if_tun.h include below libc net/ethernet.h. That fixes
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the following build failure:
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In file included from .../arm-buildroot-linux-musleabihf/sysroot/usr/include/net/ethernet.h:10,
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from ../include/headers.h:117,
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from Thread.c:72:
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.../arm-buildroot-linux-musleabihf/sysroot/usr/include/netinet/if_ether.h:116:8: error: redefinition of ‘struct ethhdr’
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116 | struct ethhdr {
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| ^~~~~~
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In file included from .../arm-buildroot-linux-musleabihf/sysroot/usr/include/linux/if_tun.h:20,
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from ../include/headers.h:110,
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from Thread.c:72:
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.../arm-buildroot-linux-musleabihf/sysroot/usr/include/linux/if_ether.h:148:8: note: originally defined here
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148 | struct ethhdr {
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| ^~~~~~
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Fixes bug #157.
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: sent to Robert McMahon <rjmcmahon@rjmcmahon.com>
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include/headers.h | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/include/headers.h b/include/headers.h
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index 00e0ea0dba42..887490475381 100644
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--- a/include/headers.h
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+++ b/include/headers.h
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@@ -106,11 +106,6 @@ typedef bool _Bool;
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#include <net/if.h>
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#endif
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-#if ((HAVE_TUNTAP_TAP) || (HAVE_TUNTAP_TUN))
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-#include <linux/if_tun.h>
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-#include <sys/ioctl.h>
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-#endif
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-
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// AF_PACKET HEADERS
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#if defined(HAVE_LINUX_FILTER_H) && defined(HAVE_AF_PACKET)
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@@ -146,6 +141,11 @@ typedef bool _Bool;
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#define IPV6HDRLEN 40
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#endif // HAVE_AF_PACKET
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+#if ((HAVE_TUNTAP_TAP) || (HAVE_TUNTAP_TUN))
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+#include <linux/if_tun.h>
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+#include <sys/ioctl.h>
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+#endif
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+
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#ifdef WIN32
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/* Windows config file */
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--
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2.33.0
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