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[PATCH] tcg/ppc: Fix building with Clang

From: Brad Smith
Subject: [PATCH] tcg/ppc: Fix building with Clang
Date: Tue, 20 Apr 2021 21:14:00 -0400

Fix building with Clang.

At the moment Clang does not define _CALL_SYSV as GCC does. From
clang/lib/Basic/Targets/PPC.cpp in getTargetDefines()..

  // FIXME: The following are not yet generated here by Clang, but are
  //        generated by GCC:
  //   _SOFT_FLOAT_
  //   __APPLE_ALTIVEC__
  //   __RECIP__
  //   __RECIPF__
  //   __RSQRTE__
  //   __RSQRTEF__
  //   _SOFT_DOUBLE_
  //   __NO_LWSYNC__
  //   __CMODEL_MEDIUM__
  //   __CMODEL_LARGE__
  //   _CALL_SYSV

This is from the OpenBSD ports tree where we use it to build
on OpenBSD/powerpc.

Signed-off-by: Brad Smith <brad@comstyle.com>

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 838ccfa42d..d2611832e5 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -25,6 +25,11 @@
 #include "elf.h"
 #include "../tcg-pool.c.inc"
+/* Clang does not define _CALL_* */
+#if defined(__clang__) && defined(__ELF__) && !defined(_CALL_SYSV)
+#define _CALL_SYSV 1
 #if defined _CALL_DARWIN || defined __APPLE__

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