document AUTOCONF_ENV

diff --git a/share/man/man5/bsd.port.mk.5 b/share/man/man5/bsd.port.mk.5
index c3bdc0c..901775b 100644 (file)
--- a/share/man/man5/bsd.port.mk.5
+++ b/share/man/man5/bsd.port.mk.5
@@ -1,4 +1,4 @@
-.\" $OpenBSD: bsd.port.mk.5,v 1.493 2018/07/30 16:02:02 schwarze Exp $
+.\" $OpenBSD: bsd.port.mk.5,v 1.494 2018/08/04 09:01:56 espie Exp $
 .\"
 .\" Copyright (c) 2000-2008 Marc Espie
 .\"
@@ -24,7 +24,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: July 30 2018 $
+.Dd $Mdocdate: August 4 2018 $
 .Dt BSD.PORT.MK 5
 .Os
 .Sh NAME
@@ -869,6 +869,13 @@ Defaults to autoconf (though autoreconf might be more appropriate).
 Where to invoke autoconf if ${CONFIGURE_STYLE} includes autoconf.
 Defaults to ${WRKSRC}.
 .\" AUTOCONF_DIR should probably be a list, and be renamed to AUTOCONF_DIRS ?
+.It Ev AUTOCONF_ENV
+Environment values that should be passed to all runs of autoconf, automake
+and related tools.
+Specifically, version numbers and PATH.
+Automatically set as soon as
+.Ev CONFIGURE_STYLE
+is gnu or higher.
 .It Ev AUTOCONF_VERSION
 Starting with
 .Ox 3.3 ,