From 12ba0f66e2d6b322fd48c5c5332f85baa0c1c51f Mon Sep 17 00:00:00 2001
From: brooks <brooks@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Tue, 2 Dec 2014 20:23:10 +0000
Subject: [PATCH] MFC r274806:

Add a guard against attempting to invoke the buildenv target with -j# as
that silently exits rather than doing something useful.

Sponsored by:	DARPA, AFRL


git-svn-id: svn://svn.freebsd.org/base/stable/9@275425 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 Makefile.inc1 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Makefile.inc1 b/Makefile.inc1
index 184647b48..25f73f5f1 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -621,6 +621,11 @@ buildworld_epilogue:
 buildenvvars:
 	@echo ${WMAKEENV:Q}
 
+.if ${.TARGETS:Mbuildenv}
+.if ${.MAKEFLAGS:M-j}
+.error The buildenv target is incompatible with -j
+.endif
+.endif
 buildenv:
 	@echo Entering world for ${TARGET_ARCH}:${TARGET}
 	@cd ${.CURDIR} && env ${WMAKEENV} ${BUILDENV_SHELL} || true
-- 
2.45.0