Index: head/graphics/librsvg2-rust/Makefile
===================================================================
--- head/graphics/librsvg2-rust/Makefile	(revision 493675)
+++ head/graphics/librsvg2-rust/Makefile	(revision 493676)
@@ -1,48 +1,58 @@
 # Created by: Ade Lovett <ade@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	librsvg
 PORTVERSION=	2.45.5
+PORTREVISION=	1
 CATEGORIES=	graphics gnome
-MASTER_SITES=	GNOME
+MASTER_SITES=	GNOME \
+		CRATESIO/libc/0.2.49:libc
 PKGNAMESUFFIX=	2-rust
-DIST_SUBDIR=	gnome2
+DISTFILES=	gnome2/${DISTNAME}${EXTRACT_SUFX} \
+		rust/crates/libc-0.2.49.tar.gz:libc
 
 MAINTAINER=	tobik@FreeBSD.org
 COMMENT=	Library for parsing and rendering SVG vector-graphic files
 
 LICENSE=	LGPL20
 
 BUILD_DEPENDS=	${RUST_DEFAULT}>=1.27.0:lang/${RUST_DEFAULT} \
 		valac:lang/vala
 LIB_DEPENDS=	libfreetype.so:print/freetype2 \
 		libfontconfig.so:x11-fonts/fontconfig \
 		libpng.so:graphics/png \
 		libcroco-0.6.so:textproc/libcroco
 
 USES=		gettext gmake gnome libtool pkgconfig tar:xz
 USE_GNOME=	cairo gdkpixbuf2 libxml2 pango gnomeprefix introspection:build
 USE_LDCONFIG=	yes
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-vala \
 		--disable-Bsymbolic \
 		--disable-dependency-tracking \
 		--disable-static
 INSTALL_TARGET=	install-strip
 # Make sure it uses the Rust toolchain from ports.
 CONFIGURE_ENV=	CARGO=${LOCALBASE}/bin/cargo \
 		RUSTC=${LOCALBASE}/bin/rustc
 MAKE_ENV=	RUSTC=${LOCALBASE}/bin/rustc
 
 CONFLICTS_INSTALL=	librsvg2
 
 post-patch:
 # Avoid dependency loop with gtk3 (it depends on librsvg2), do not build rsvg-view
 	@${REINPLACE_CMD} -e 's|GTK3_REQUIRED=3.[0-9][0-9].[0-9]|GTK3_REQUIRED=9.90.0|g' \
 		${WRKSRC}/configure
 # Disable vendor checksums
 	@${REINPLACE_CMD} -e 's/"files":{[^}]*}/"files":{}/' \
 		${WRKSRC}/vendor/*/.cargo-checksum.json
+# Replace vendored libc crate with libc-0.2.49 for tier 2 arch support
+	${RM} -r ${WRKSRC}/vendor/libc
+	${MV} ${WRKDIR}/libc-0.2.49 ${WRKSRC}/vendor/libc
+	@${ECHO_CMD} '{"files":{}}' > ${WRKSRC}/vendor/libc/.cargo-checksum.json
+
+pre-configure:
+	@cd ${WRKSRC} && ${SETENV} ${CONFIGURE_ENV} ${LOCALBASE}/bin/cargo update
 
 .include <bsd.port.mk>
Index: head/graphics/librsvg2-rust/distinfo
===================================================================
--- head/graphics/librsvg2-rust/distinfo	(revision 493675)
+++ head/graphics/librsvg2-rust/distinfo	(revision 493676)
@@ -1,3 +1,5 @@
-TIMESTAMP = 1550406514
+TIMESTAMP = 1550930141
 SHA256 (gnome2/librsvg-2.45.5.tar.xz) = 600872dc608fe5e01bfd8d5b3046d01b53b99121bc5ab9663531b53630843700
 SIZE (gnome2/librsvg-2.45.5.tar.xz) = 13485044
+SHA256 (rust/crates/libc-0.2.49.tar.gz) = 413f3dfc802c5dc91dc570b05125b6cda9855edfaa9825c9849807876376e70e
+SIZE (rust/crates/libc-0.2.49.tar.gz) = 375486