From 10febaa758fec4de02dcf512007d321eb340cbca Mon Sep 17 00:00:00 2001
From: imp <imp@FreeBSD.org>
Date: Tue, 22 Feb 2011 04:07:15 +0000
Subject: Select building CLANG based on ${TARGET_ARCH} and existence of
 WITH{,OUT}_CLANG.  We default to yes on some archs, no on others, unless
 WITHOUT_CLANG or WITH_CLANG is defined respectively.

---
 Makefile.inc1 | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

(limited to 'Makefile.inc1')

diff --git a/Makefile.inc1 b/Makefile.inc1
index de00716..ad46fbe 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -42,6 +42,20 @@ TARGET_ARCH=${TARGET}
 .include <bsd.own.mk>
 .include <bsd.arch.inc.mk>
 
+# Clang is a special case.  We have to use it to bootstrap the target, not
+# where we're building from.
+.if ${TARGET_ARCH} == i386 || ${TARGET_ARCH} == amd64 || \
+    ${TARGET_ARCH} == arm || ${TARGET_ARCH} == powerpc64 || \
+    ${TARGET_ARCH} == powerpc
+.if !defined(WITHOUT_CLANG)
+MK_CLANG=yes
+.endif
+.else
+.if !defined(WITH_CLANG)
+MK_CLANG=no
+.endif
+.endif
+
 # We must do share/info early so that installation of info `dir'
 # entries works correctly.  Do it first since it is less likely to
 # grow dependencies on include and lib than vice versa.
@@ -970,11 +984,11 @@ _gensnmptree=	usr.sbin/bsnmpd/gensnmptree
 _crunchgen=	usr.sbin/crunch/crunchgen
 .endif
 
-# XXX: There is no way to specify bootstrap tools depending on MK-flags
-# with different per-architecture default values. Always build tblgen.
+.if ${MK_CLANG} != "no"
 _clang_tblgen= \
 	lib/clang/libllvmsupport \
 	usr.bin/clang/tblgen
+.endif
 
 .if ${MK_CDDL} != "no"
 _dtrace_tools= cddl/usr.bin/sgsmsg cddl/lib/libctf lib/libelf \
-- 
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