gnu/usr.bin/clang/Makefile.inc sets CC based on BOOTSTRAP_CLANG, most
local llvm Makefiles include bsd.own.mk which picks up mk.conf
definitions, these few don't which breaks the build when BOOTSTRAP_CLANG
is set in mk.conf instead of the environment.
Index: clang/Makefile
===================================================================
RCS file: /cvs/src/gnu/usr.bin/clang/clang/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- clang/Makefile 14 Jan 2017 20:12:41 -0000 1.2
+++ clang/Makefile 22 Jan 2017 02:00:43 -0000
@@ -1,5 +1,7 @@
# $OpenBSD: Makefile,v 1.2 2017/01/14 20:12:41 patrick Exp $
+.include <bsd.own.mk>
+
PROG= clang
BINDIR= /usr/bin
SRCS= driver.cpp \
Index: clang-tblgen/Makefile
===================================================================
RCS file: /cvs/src/gnu/usr.bin/clang/clang-tblgen/Makefile,v
retrieving revision 1.1
diff -u -p -r1.1 Makefile
--- clang-tblgen/Makefile 5 Sep 2016 10:56:48 -0000 1.1
+++ clang-tblgen/Makefile 22 Jan 2017 02:00:43 -0000
@@ -6,6 +6,7 @@ NOMAN=
LDADD+= -ltermlib
DPADD+= ${LIBTERMLIB}
+.include <bsd.own.mk>
SRCS= ClangASTNodesEmitter.cpp \
ClangAttrEmitter.cpp \
ClangCommentCommandInfoEmitter.cpp \
Index: llvm-tblgen/Makefile
===================================================================
RCS file: /cvs/src/gnu/usr.bin/clang/llvm-tblgen/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- llvm-tblgen/Makefile 14 Jan 2017 20:12:42 -0000 1.2
+++ llvm-tblgen/Makefile 22 Jan 2017 02:00:43 -0000
@@ -6,6 +6,7 @@ NOMAN=
LDADD+= -ltermlib
DPADD+= ${LIBTERMLIB}
+.include <bsd.own.mk>
SRCS= AsmMatcherEmitter.cpp \
AsmWriterEmitter.cpp \
AsmWriterInst.cpp \
