Index: graphics/imv/Makefile
===================================================================
--- graphics/imv/Makefile
+++ graphics/imv/Makefile
@@ -2,8 +2,7 @@
 
 PORTNAME=	imv
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.1.0
-PORTREVISION=	4
+DISTVERSION=	4.2.0
 CATEGORIES=	graphics
 
 MAINTAINER=	eduardo@FreeBSD.org
@@ -14,27 +13,16 @@
 
 BUILD_DEPENDS=	a2x:textproc/asciidoc
 LIB_DEPENDS=	libicuuc.so:devel/icu \
+		libinih.so:devel/inih \
 		libxkbcommon.so:x11/libxkbcommon
-TEST_DEPENDS=	${LOCALBASE}/lib/libcmocka.so:sysutils/cmocka
 
-USES=		compiler:c11 desktop-file-utils gettext-runtime gl gmake gnome \
-		pkgconfig
+USES=		compiler:c11 desktop-file-utils gettext-runtime gl gnome \
+		meson pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	eXeC64
 USE_GL=		gl
 USE_GNOME=	cairo glib20 pango
 
-MAKE_ARGS=	CONFIGPREFIX=${PREFIX}/etc \
-		INSTALL_DATA="${INSTALL_DATA}" \
-		INSTALL_MAN="${INSTALL_MAN}" \
-		INSTALL_PROGRAM="${INSTALL_PROGRAM}" \
-		INSTALL_SCRIPT="${INSTALL_SCRIPT}" \
-		MANPREFIX=${PREFIX}/man \
-		V=1 \
-		WINDOWS=${_IMV_WINDOWS}
-ALL_TARGET=	imv doc
-TEST_TARGET=	check
-
 PLIST_FILES=	bin/imv \
 		bin/imv-msg \
 		etc/imv_config \
@@ -43,54 +31,64 @@
 		man/man5/imv.5.gz \
 		share/applications/imv.desktop
 
-OPTIONS_DEFINE=		FREEIMAGE JPEG NSGIF PNG SVG TIFF
-OPTIONS_DEFAULT=	FREEIMAGE JPEG NSGIF PNG SVG TIFF WAYLAND X11
+OPTIONS_DEFINE=		FREEIMAGE HEIF JPEG NSGIF PNG SVG TEST TIFF
+OPTIONS_DEFAULT=	FREEIMAGE HEIF JPEG NSGIF PNG SVG TIFF WAYLAND X11
 OPTIONS_MULTI=		WINDOWS
 OPTIONS_MULTI_WINDOWS=	WAYLAND X11
 OPTIONS_SUB=		yes
 
 FREEIMAGE_DESC=	FreeImage backend (support for many image formats)
+HEIF_DESC=	HEIF backend
 NSGIF_DESC=	NetSurf GIF backend (support for animated GIF)
 WINDOWS_DESC=	Windowing system
 
-FREEIMAGE_LIB_DEPENDS=		libfreeimage.so:graphics/freeimage
-FREEIMAGE_MAKE_ARGS_OFF=	BACKEND_FREEIMAGE=no
-FREEIMAGE_MAKE_ARGS=		BACKEND_FREEIMAGE=yes
+FREEIMAGE_LIB_DEPENDS=	libfreeimage.so:graphics/freeimage
+FREEIMAGE_MESON_ON=	-Dfreeimage=enabled
+FREEIMAGE_MESON_OFF=	-Dfreeimage=disabled
+
+HEIF_LIB_DEPENDS=	libheif.so:graphics/libheif
+HEIF_MESON_ON=		-Dlibheif=enabled
+HEIF_MESON_OFF=		-Dlibheif=disabled
 
 JPEG_LIB_DEPENDS=	libturbojpeg.so:graphics/libjpeg-turbo
-JPEG_MAKE_ARGS_OFF=	BACKEND_LIBJPEG=no
-JPEG_MAKE_ARGS=		BACKEND_LIBJPEG=yes
+JPEG_MESON_ON=		-Dlibjpeg=enabled
+JPEG_MESON_OFF=		-Dlibjpeg=disabled
 
 NSGIF_LIB_DEPENDS=	libnsgif.so:graphics/libnsgif
-NSGIF_MAKE_ARGS_OFF=	BACKEND_LIBNSGIF=no
-NSGIF_MAKE_ARGS=	BACKEND_LIBNSGIF=yes
+NSGIF_MESON_ON=		-Dlibnsgif=enabled
+NSGIF_MESON_OFF=	-Dlibnsgif=disabled
 
 PNG_LIB_DEPENDS=	libpng.so:graphics/png
-PNG_MAKE_ARGS_OFF=	BACKEND_LIBPNG=no
-PNG_MAKE_ARGS=		BACKEND_LIBPNG=yes
+PNG_MESON_ON=		-Dlibpng=enabled
+PNG_MESON_OFF=		-Dlibpng=disabled
 
 SVG_USE=		GNOME=librsvg2
-SVG_MAKE_ARGS_OFF=	BACKEND_LIBRSVG=no
-SVG_MAKE_ARGS=		BACKEND_LIBRSVG=yes
+SVG_MESON_ON=		-Dlibrsvg=enabled
+SVG_MESON_OFF=		-Dlibrsvg=disabled
+
+TEST_LIB_DEPENDS=	libcmocka.so:sysutils/cmocka
+TEST_MESON_ON=		-Dtest=enabled
+TEST_MESON_OFF=		-Dtest=disabled
 
 TIFF_LIB_DEPENDS=	libtiff.so:graphics/tiff
-TIFF_MAKE_ARGS_OFF=	BACKEND_LIBTIFF=no
-TIFF_MAKE_ARGS=		BACKEND_LIBTIFF=yes
+TIFF_MESON_ON=		-Dlibtiff=enabled
+TIFF_MESON_OFF=		-Dlibtiff=disabled
 
 WAYLAND_LIB_DEPENDS=	libwayland-client.so:graphics/wayland \
 			libwayland-egl.so:graphics/wayland
+
 WAYLAND_USE=		GL=egl
-WAYLAND_VARS=		_IMV_WINDOWS=wayland
+WAYLAND_MESON_ON=	-Dwindows=wayland
 
 X11_USES=	xorg
 X11_USE=	GL=glu \
 		XORG=x11,xcb
-X11_VARS=	_IMV_WINDOWS=x11
+X11_MESON_ON=		-Dwindows=x11
 
 .include <bsd.port.options.mk>
 
 .if ${PORT_OPTIONS:MWAYLAND} && ${PORT_OPTIONS:MX11}
-_IMV_WINDOWS=	all
+MESON_ARGS+=	-Dwindows=all
 PLIST_FILES+=	bin/imv-wayland \
 		bin/imv-x11
 .endif
Index: graphics/imv/distinfo
===================================================================
--- graphics/imv/distinfo
+++ graphics/imv/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1576993342
-SHA256 (eXeC64-imv-v4.1.0_GH0.tar.gz) = 8c2f1baa4dce8bf1f6d1fb9dea8cf1da09fdf2c6de0f7030e91714df2ebcdf50
-SIZE (eXeC64-imv-v4.1.0_GH0.tar.gz) = 77341
+TIMESTAMP = 1615794164
+SHA256 (eXeC64-imv-v4.2.0_GH0.tar.gz) = 7d3de0462ce0cd705a719b12648661c8d91245cc7732eac4e459c465bc6b3d94
+SIZE (eXeC64-imv-v4.2.0_GH0.tar.gz) = 77809
Index: graphics/imv/files/patch-meson.build
===================================================================
--- /dev/null
+++ graphics/imv/files/patch-meson.build
@@ -0,0 +1,11 @@
+--- meson.build.orig	2021-03-15 09:06:48 UTC
++++ meson.build
+@@ -101,7 +101,7 @@ files_msg = files('src/imv_msg.c', 'src/ipc_common.c')
+ 
+ enabled_backends = []
+ foreach backend : [
+-  ['freeimage', 'library', 'freeimage'],
++  ['freeimage', 'dependency', 'freeimage', []],
+   ['libtiff', 'dependency', 'libtiff-4', []],
+   ['libpng', 'dependency', 'libpng', []],
+   ['libjpeg', 'dependency', 'libturbojpeg', []],