diff --git a/devel/glib20/Makefile b/devel/glib20/Makefile
index bb111a27fbab..400741e226c2 100644
--- a/devel/glib20/Makefile
+++ b/devel/glib20/Makefile
@@ -1,147 +1,152 @@
 PORTNAME=	glib
 DISTVERSION=	2.84.1
-PORTREVISION=	2
+PORTREVISION=	3
 PORTEPOCH=	2
 CATEGORIES=	devel
 MASTER_SITES=	GNOME
 DIST_SUBDIR=	gnome
 
 MAINTAINER=	desktop@FreeBSD.org
 COMMENT=	Some useful routines of C programming (current stable version)
 WWW=		https://www.gtk.org/
 
 LICENSE=	LGPL20
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}packaging>0:devel/py-packaging@${PY_FLAVOR}
 LIB_DEPENDS=	libffi.so:devel/libffi \
 		libinotify.so:devel/libinotify \
 		libpcre2-8.so:devel/pcre2
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}packaging>0:devel/py-packaging@${PY_FLAVOR}
 TEST_DEPENDS=	dbus-uuidgen:devel/dbus \
 		update-desktop-database:devel/desktop-file-utils \
 		update-mime-database:misc/shared-mime-info
 
 FLAVORS=	default bootstrap
 FLAVOR?=	${FLAVORS:[1]}
 FLAVORS_SUB=	yes
 
 default_EXTRACT_DEPENDS=	${LOCALBASE}/gobject-introspection-bootstrap/bin/g-ir-scanner:devel/gobject-introspection@bootstrap
 default_USES=		trigger
 
 bootstrap_PKGNAMESUFFIX=	-bootstrap
 
 # iconv:wchar_t - our iconv in base doesn't support utf-8 -> wchar_t (boooo)
 # (wchar_t is used by glibmm, rawtherapee triggered this)
 USES=		compiler:c11 cpe gettext gnome iconv:wchar_t localbase:ldflags \
 		meson perl5 pkgconfig python tar:xz ${${FLAVOR}_USES}
 USE_LDCONFIG=	yes
 USE_PERL5=	build
 TRIGGERS=	gio-modules glib-schemas
 MESON_ARGS=	-Db_lundef=false \
 		-Ddefault_library=both \
-		-Dfile_monitor_backend='libinotify-kqueue' \
 		-Dinstalled_tests=false \
 		-Dlibelf=disabled \
 		-Dlibmount=disabled \
 		-Druntime_dir=/var/run \
 		-Dselinux=disabled \
 		-Dsysprof=disabled \
 		-Dsystemtap=disabled \
 		-Dxattr=false
 BINARY_ALIAS=	python3=${PYTHON_CMD}
 PORTSCOUT=	limitw:1,even
 CPE_VENDOR=	gnome
 
 CONFLICTS_INSTALL=	p5-Giovanni
 
 _LIBVERSION=	0.${DISTVERSION:R:E}00.${DISTVERSION:E}
 PLIST_SUB=	LIBVERSION=${_LIBVERSION}
 
 OPTIONS_DEFINE=		DOCS FAM_ALTBACKEND MANPAGES NLS TEST
 OPTIONS_DEFAULT=	MANPAGES
 OPTIONS_SUB=		yes
 
 DOCS_BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}gi-docgen>0:textproc/py-gi-docgen@${PY_FLAVOR}
 DOCS_IMPLIES=		MANPAGES TEST
 DOCS_MESON_TRUE=	documentation
 
 FAM_ALTBACKEND_DESC=	Alternate file monitor backend
 
 MANPAGES_BUILD_DEPENDS=	rst2man:textproc/py-docutils
 MANPAGES_MESON_ENABLED=	man-pages
 
 TEST_MESON_TRUE=	tests
 
 # doesn't build yet
 MESON_ARGS+=	-Ddtrace=disabled
 
 .if ${FLAVOR:U} == bootstrap
 MESON_ARGS+=	-Dintrospection=disabled -Ddocumentation=false -Dman-pages=disabled
 OPTIONS_DEFINE=
 PREFIX=		${LOCALBASE}/glib-bootstrap
 PLIST_SUB+=	PORTDOCS='@comment ' NLS='@comment ' MANPAGES='@comment '
 .else
 BINARY_ALIAS+=	g-ir-scanner=${LOCALBASE}/gobject-introspection-bootstrap/bin/g-ir-scanner
 MESON_ARGS+=	-Dintrospection=enabled
 .endif
 
+.if exists(/usr/include/sys/inotify.h)
+MESON_ARGS+=	-Dfile_monitor_backend='inotify'
+.else
+MESON_ARGS+=	-Dfile_monitor_backend='libinotify-kqueue'
+.endif
+
 .if ${FLAVOR:U} == default
 post-extract:
 	${CP} -r ${LOCALBASE}/gobject-introspection-bootstrap/libdata/pkgconfig ${PKGCONFIG_LINKDIR}
 	${CP} ${LOCALBASE}/glib-bootstrap/libdata/pkgconfig/* ${PKGCONFIG_LINKDIR}
 .endif
 
 pre-configure-FAM_ALTBACKEND-on:
 	@${REINPLACE_CMD} -e 's|kqueue-helper.c|kqueue_fnm.c|g ; \
 		s|.*kqueue-missing.c.*||g ; \
 		s|.*dep-list.c.*||g' \
 		${WRKSRC}/gio/kqueue/meson.build
 	@${CP} -f ${FILESDIR}/gkqueuefilemonitor.c ${WRKSRC}/gio/kqueue/gkqueuefilemonitor.c
 	@${CP} ${FILESDIR}/kqueue_fnm.c ${WRKSRC}/gio/kqueue/kqueue_fnm.c
 	@${CP} ${FILESDIR}/kqueue_fnm.h ${WRKSRC}/gio/kqueue/kqueue_fnm.h
 
 post-patch:
 	${REINPLACE_CMD} -e 's|@PYTHON@|${PYTHON_CMD}|g' \
 		${WRKSRC}/gio/gdbus-2.0/codegen/gdbus-codegen.in \
 		${WRKSRC}/glib/gtester-report.in \
 		${WRKSRC}/gobject/glib-genmarshal.in \
 		${WRKSRC}/gobject/glib-mkenums.in
 	${REINPLACE_CMD} -e '/inotify_init1/d' \
 		-e '/inotify.h/d' \
 		${WRKSRC}/meson.build
 	${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|' \
 		${WRKSRC}/gio/xdgmime/xdgmime.c \
 		${WRKSRC}/glib/gutils.c \
 		${WRKSRC}/glib/tests/utils.c
 
 CODEGENDIR=	${PREFIX}/share/glib-2.0/codegen
 
 post-install-DOCS-on:
 # this doc file gets created conditionally, so instead of adding another
 # PLIST_SUB item just create an empty file if it is missing
 	${TOUCH} ${STAGEDIR}${DOCSDIR}-2.0/const.VA_COPY_AS_ARRAY.html
 
 post-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/GConf/gsettings
 	${MKDIR} ${STAGEDIR}${PREFIX}/lib/gio/modules
 # generates .py[co] files for installed modules
 # if that's not done, ${PYTHON_SITELIBDIR}/gps will be polluted
 # with these files when module is imported from root user
 	${FIND} ${STAGEDIR}${PREFIX} -name \*.pyc -delete
 	(cd ${STAGEDIR}${PREFIX} && \
 	${PYTHON_CMD} ${PYTHON_LIBDIR}/compileall.py \
 		-d ${CODEGENDIR} -f ${CODEGENDIR:S;${PREFIX}/;;} && \
 	${PYTHON_CMD} -O ${PYTHON_LIBDIR}/compileall.py \
 		-d ${CODEGENDIR} -f ${CODEGENDIR:S;${PREFIX}/;;})
 # install bash completion regardless if bash is present
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/bash-completion/completions
 .for file in gapplication gdbus gio gresource gsettings
 	${INSTALL_DATA} ${WRKSRC}/gio/completion/${file} \
 		${STAGEDIR}${PREFIX}/share/bash-completion/completions/
 .endfor
 	${RM} -r ${STAGEDIR}${PREFIX}/libexec/installed-tests
 
 pre-test:
 	${LOCALBASE}/bin/dbus-uuidgen > /var/lib/dbus/machine-id
 
 .include <bsd.port.mk>