Very straightforward.
Okay ?
Index: autoconf/Makefile.inc
===================================================================
RCS file: /cvs/ports/devel/autoconf/Makefile.inc,v
retrieving revision 1.8
diff -u -p -r1.8 Makefile.inc
--- autoconf/Makefile.inc 11 Mar 2022 18:49:37 -0000 1.8
+++ autoconf/Makefile.inc 9 Sep 2023 12:03:05 -0000
@@ -26,4 +26,4 @@ CONFIGURE_ARGS += --program-suffix=${SU
MAKE_FLAGS += pkgdatadir=${PREFIX}/share/autoconf${SUFFIX}
FAKE_FLAGS += lispdir=
-PORTROACH = limit:^${VERSION}
+PORTROACH ?= limit:^${VERSION}
Index: autoconf/2.71/Makefile
===================================================================
RCS file: /cvs/ports/devel/autoconf/2.71/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- autoconf/2.71/Makefile 11 Mar 2022 18:49:40 -0000 1.2
+++ autoconf/2.71/Makefile 9 Sep 2023 12:03:05 -0000
@@ -10,5 +10,6 @@ MAKE_FLAGS = EMACS=no
FAKE_FLAGS = EMACS=no
TEST_DEPENDS = devel/automake/1.16
TEST_FLAGS += AUTOMAKE_VERSION=1.16
+PORTROACH =
.include <bsd.port.mk>
Index: automake/Makefile.inc
===================================================================
RCS file: /cvs/ports/devel/automake/Makefile.inc,v
retrieving revision 1.8
diff -u -p -r1.8 Makefile.inc
--- automake/Makefile.inc 6 Dec 2022 15:34:34 -0000 1.8
+++ automake/Makefile.inc 9 Sep 2023 12:03:05 -0000
@@ -13,7 +13,7 @@ PERMIT_PACKAGE ?= Yes
# we're not a python port, don't subst py- prefix
UPDATE_PLIST_ARGS += -i MODPY_PY_PREFIX
-PORTROACH = limit:^${VERSION}
+PORTROACH ?= limit:^${VERSION}
BUILD_DEPENDS += ${RUN_DEPENDS}
CONFIGURE_ARGS += --infodir=${PREFIX}/info
Index: automake/1.16/Makefile
===================================================================
RCS file: /cvs/ports/devel/automake/1.16/Makefile,v
retrieving revision 1.8
diff -u -p -r1.8 Makefile
--- automake/1.16/Makefile 9 Dec 2022 11:15:02 -0000 1.8
+++ automake/1.16/Makefile 9 Sep 2023 12:03:05 -0000
@@ -2,6 +2,7 @@ VERSION= 1.16
DISTNAME= automake-${VERSION}.5
PKGSPEC= automake->=${VERSION},<1.17
EXTRACT_SUFX= .tar.xz
+PORTROACH =
AUTOCONF_VERSION= 2.69
