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Date:      Fri, 22 Jan 2016 02:28:17 +0000 (UTC)
From:      Ed Maste <emaste@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r294542 - head/gnu/lib/libgcc
Message-ID:  <201601220228.u0M2SH7J077683@repo.freebsd.org>

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Author: emaste
Date: Fri Jan 22 02:28:17 2016
New Revision: 294542
URL: https://svnweb.freebsd.org/changeset/base/294542

Log:
  Remove old generated unwind.h when using LLVM libunwind
  
  When not using LLVM libunwind, unwind.h is a generated header and a stale
  copy may remain in the OBJDIR after enabling LLVM libunwind. Explicitly
  remove it.
  
  Reported by:	bz
  Reviewed by:	bdrewery
  Sponsored by:	The FreeBSD Foundation
  Differential Revision:	https://reviews.freebsd.org/D5019

Modified:
  head/gnu/lib/libgcc/Makefile

Modified: head/gnu/lib/libgcc/Makefile
==============================================================================
--- head/gnu/lib/libgcc/Makefile	Fri Jan 22 02:23:18 2016	(r294541)
+++ head/gnu/lib/libgcc/Makefile	Fri Jan 22 02:28:17 2016	(r294542)
@@ -193,7 +193,12 @@ LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:
 .endif
 
 COMMONHDRS=	tm.h tconfig.h options.h gthr-default.h
-.if ${MK_LLVM_LIBUNWIND} == no
+.if ${MK_LLVM_LIBUNWIND} != "no"
+# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale
+# copy may be left behind in OBJDIR when switching, so remove it explicitly.
+beforebuild:
+	@rm -f ${.OBJDIR}/unwind.h
+.else
 COMMONHDRS+=	unwind.h
 .endif
 



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