Move cairo-util to shared/
diff --git a/configure.ac b/configure.ac
index 748115e..f8ee2fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -109,10 +109,12 @@
PKG_CHECK_MODULES(WEBP, [libwebp], [have_webp=yes], [have_webp=no])
AS_IF([test "x$have_webp" = "xyes"],
[AC_DEFINE([HAVE_WEBP], [1], [Have webp])])
-IMAGE_LIBS="$PIXMAN_LIBS $PNG_LIBS $WEBP_LIBS"
-IMAGE_CFLAGS="$PIXMAN_CFLAGS $PNG_CFLAGS $WEBP_CFLAGS"
-AC_SUBST(IMAGE_LIBS)
-AC_SUBST(IMAGE_CFLAGS)
+
+PKG_CHECK_MODULES(CAIRO, [cairo])
+SHARED_LIBS="$CAIRO_LIBS $PIXMAN_LIBS $PNG_LIBS $WEBP_LIBS"
+SHARED_CFLAGS="$CAIRO_CFLAGS $PIXMAN_CFLAGS $PNG_CFLAGS $WEBP_CFLAGS"
+AC_SUBST(SHARED_LIBS)
+AC_SUBST(SHARED_CFLAGS)
AC_CHECK_LIB([jpeg], [jpeg_CreateDecompress], have_jpeglib=yes)
if test x$have_jpeglib = xyes; then