[gentoo-user] Build librsvg-2.34.2 Error

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CC     librsvg_2_la-librsvg-enum-types.lo
/bin/sh ./libtool --silent --tag=CC   --mode=compile i686-pc-linux-gnu-gcc
-DHAVE_CONFIG_H -I.  -I. -I. -DG_LOG_DOMAIN=\"librsvg\"
-DLIBRSVG_DATADIR="\"/usr/share\""   -pthread -I/usr/include/gdk-pixbuf-2.0
-I/usr/include/libpng15 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/libxml2 -I/usr/include/pango-1.0 -I/usr/include/freetype2
-I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libdrm
-I/usr/include/libcroco-0.6 -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include -I/usr/include/libxml2   -DHAVE_LIBCROCO=1
-O2 -march=pentium-m -pipe -c -o librsvg_2_la-librsvg-enum-types.lo `test
-f 'librsvg-enum-types.c' || echo './'`librsvg-enum-types.c
  CCLD   librsvg-2.la
  CCLD   rsvg-convert
  GISCAN Rsvg-2.0.gir
  CCLD   rsvg-view
In file included from <stdin>:19:0:
/var/tmp/portage/gnome-base/librsvg-2.34.2/work/librsvg-2.34.2/rsvg-cairo-render.h:32:19:
fatal error: cairo.h: No such file or directory
compilation terminated.
Error while processing the source.
make[2]: *** [Rsvg-2.0.gir] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory
`/var/tmp/portage/gnome-base/librsvg-2.34.2/work/librsvg-2.34.2'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/var/tmp/portage/gnome-base/librsvg-2.34.2/work/librsvg-2.34.2'
make: *** [all] Error 2
 * ERROR: gnome-base/librsvg-2.34.2 failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of 'emerge --info
=gnome-base/librsvg-2.34.2',
 * the complete build log and the output of 'emerge -pqv
=gnome-base/librsvg-2.34.2'.
 * The complete build log is located at
'/var/tmp/portage/gnome-base/librsvg-2.34.2/temp/build.log'.
 * The ebuild environment file is located at
'/var/tmp/portage/gnome-base/librsvg-2.34.2/temp/environment'.
 * S: '/var/tmp/portage/gnome-base/librsvg-2.34.2/work/librsvg-2.34.2'


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