From eed6d55d264e21fb8877a7480aa774478d8b12cd Mon Sep 17 00:00:00 2001
From: Bryan Drewery <bdrewery@FreeBSD.org>
Date: Wed, 27 Jun 2018 16:57:56 +0000
Subject: [PATCH] Clang: Only build needed target for bootstrap compiler.

This will disable the new LLVM_TARGET_ALL option which will only
enable the required target.

This only impacts the bootstrap compiler in WORLDTMP, not the target compiler
that will be installed.

MFC after:	2 weeks
Reviewed by:	sbruno, dim (earlier version)
Sponsored by:	Dell EMC
Differential Revision:	https://reviews.freebsd.org/D16021
---
 Makefile.inc1                            | 3 +++
 tools/build/options/WITH_LLVM_TARGET_ALL | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/Makefile.inc1 b/Makefile.inc1
index 95e660bee56..0c693ae0d5b 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -686,6 +686,9 @@ TMAKE=		\
 XMAKE=		${BMAKE} \
 		TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
 		MK_GDB=no MK_TESTS=no
+.if empty(.MAKEOVERRIDES:MMK_LLVM_TARGET_ALL)
+XMAKE+=		MK_LLVM_TARGET_ALL=no
+.endif
 
 # kernel-tools stage
 KTMAKEENV=	INSTALL="sh ${.CURDIR}/tools/install.sh" \
diff --git a/tools/build/options/WITH_LLVM_TARGET_ALL b/tools/build/options/WITH_LLVM_TARGET_ALL
index 0270c03bc58..c3fb23b3510 100644
--- a/tools/build/options/WITH_LLVM_TARGET_ALL
+++ b/tools/build/options/WITH_LLVM_TARGET_ALL
@@ -1,2 +1,4 @@
 .\" $FreeBSD$
 Set to build support for all LLVM targets.
+This option is always applied to the bootstrap compiler for buildworld when
+LLVM is used.