Index: devel/kf5-kcoreaddons/Makefile
===================================================================
--- devel/kf5-kcoreaddons/Makefile
+++ devel/kf5-kcoreaddons/Makefile
@@ -29,8 +29,13 @@
 FAM_USES=		fam
 FAM_CMAKE_BOOL_OFF=	CMAKE_DISABLE_FIND_PACKAGE_FAM
 
+.include <bsd.port.pre.mk>
+# FreeBSD base gained /etc/os-release in r354922, which
+# corresponds to __FreeBSD_version 1300060
+.if ${OSVERSION} < 1300060
 post-patch:
 	${REINPLACE_CMD}  -e '/QStringLiteral/s|/etc/os-release|${LOCALBASE}/etc/os-release|g' \
 		${WRKSRC}/src/lib/util/kosrelease.cpp
+.endif
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>
Index: devel/qt5-core/Makefile
===================================================================
--- devel/qt5-core/Makefile
+++ devel/qt5-core/Makefile
@@ -10,7 +10,6 @@
 
 LIB_DEPENDS=	libicui18n.so:devel/icu \
 		libpcre2-posix.so:devel/pcre2
-RUN_DEPENDS=	etc_os-release>0:sysutils/etc_os-release
 
 USES=		compiler:c++11-lang gnome qmake:no_env qt-dist:5,base
 USE_GNOME=	glib20
@@ -37,10 +36,14 @@
 MORE_WRKSRCS=	src/tools/bootstrap src/tools/qfloat16-tables src/corelib src/tools/qlalr
 
 .include <bsd.port.pre.mk>
-
+# FreeBSD base gained /etc/os-release in r354922, which
+# corresponds to __FreeBSD_version 1300060
+.if ${OSVERSION} < 1300060
+RUN_DEPENDS+=	etc_os-release>0:sysutils/etc_os-release
 post-patch:
 	${REINPLACE_CMD}  -e '/readEtcFile/s|/etc/os-release|${LOCALBASE}/etc/os-release|g' \
 		${WRKSRC}/src/corelib/global/qglobal.cpp
+.endif
 
 post-configure:
 .for d in ${MORE_WRKSRCS}
Index: sysutils/etc_os-release/Makefile
===================================================================
--- sysutils/etc_os-release/Makefile
+++ sysutils/etc_os-release/Makefile
@@ -28,8 +28,15 @@
 		'HOME_URL=https://freebsd.org/\0'$\
 		'BUG_REPORT_URL=https://bugs.freebsd.org'
 
+.include <bsd.port.pre.mk>
+# FreeBSD base gained /etc/os-release in r354922, which
+# corresponds to __FreeBSD_version 1300060
+.if ${OSVERSION} >= 1300060
+IGNORE=		/etc/os-release is present in base
+.endif
+
 do-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/etc
 	${ECHO} -e ${CONTENTS} | ${XARGS} -0 -n 1 >> ${STAGEDIR}${PREFIX}/${PLIST_FILES}
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>
Index: sysutils/gnome-control-center/Makefile
===================================================================
--- sysutils/gnome-control-center/Makefile
+++ sysutils/gnome-control-center/Makefile
@@ -37,7 +37,6 @@
 RUN_DEPENDS=	gnome-settings-daemon>=3.4.0:sysutils/gnome-settings-daemon \
 		gsettings-desktop-schemas>=3.2.2:devel/gsettings-desktop-schemas \
 		cantarell-fonts>=0:x11-fonts/cantarell-fonts \
-		etc_os-release>0:sysutils/etc_os-release \
 		gcm-calibrate:graphics/gnome-color-manager
 
 PORTSCOUT=	limitw:1,even
@@ -65,9 +64,16 @@
 WAYLAND_MESON_TRUE=	wayland
 WAYLAND_LIB_DEPENDS=	libgudev-1.0.so:devel/libgudev
 
+
+.include <bsd.port.pre.mk>
+# FreeBSD base gained /etc/os-release in r354922, which
+# corresponds to __FreeBSD_version 1300060
+.if ${OSVERSION} < 1300060
+RUN_DEPENDS+=	etc_os-release>0:sysutils/etc_os-release
 post-patch:
 	@${REINPLACE_CMD}  -e 's|/etc/os-release|${LOCALBASE}/etc/os-release|g' \
 		${WRKSRC}/panels/privacy/cc-privacy-panel.c \
 		${WRKSRC}/panels/info/cc-info-overview-panel.c
+.endif
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>