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-rw-r--r--devel/imake/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/devel/imake/Makefile b/devel/imake/Makefile
index 71f86452ab4..beb091ee45a 100644
--- a/devel/imake/Makefile
+++ b/devel/imake/Makefile
@@ -35,6 +35,10 @@ MANCOMPRESSED= yes
INSTALL_TARGET= install install.man
MTREE_FILE= /etc/mtree/BSD.x11.dist
+.ifdef USE_IMAKE
+.error You have `USE_IMAKE' variable defined either in environment or in make(1) arguments. Please undefine and try again.
+.endif
+
do-configure:
@${ECHO_CMD} > ${WRKSRC}/cf/host.def
@(cd ${WRKDIR}/xc; \