fix build on non-x86

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

0001-fix-casting-in-filter_related.patch

@@ -0,0 +1,41 @@
+From ac5743244bd889c7596f53f0513cf645a682dcaa Mon Sep 17 00:00:00 2001
+From: Igor Gnatenko <ignatenko@src.gnome.org>
+Date: Sun, 24 Jun 2018 18:03:34 +0200
+Subject: [PATCH] fix casting in filter_related()
+
+Fixes: https://gitlab.gnome.org/GNOME/librsvg/issues/302
+Signed-off-by: Igor Gnatenko <ignatenko@src.gnome.org>
+---
+ rsvg_internals/src/drawing_ctx.rs | 2 +-
+ rsvg_internals/src/filters/ffi.rs | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
+index f7d8c60e..f3f4f02f 100644
+--- a/rsvg_internals/src/drawing_ctx.rs
++++ b/rsvg_internals/src/drawing_ctx.rs
+@@ -333,7 +333,7 @@ impl<'a> DrawingCtx {
+                                             node,
+                                             &output,
+                                             self,
+-                                            "2103".as_ptr() as *const i8,
++                                            "2103".as_ptr() as *const libc::c_char,
+                                         ))
+                                     } else {
+                                         None
+diff --git a/rsvg_internals/src/filters/ffi.rs b/rsvg_internals/src/filters/ffi.rs
+index 8a4e04d7..3a333cbd 100644
+--- a/rsvg_internals/src/filters/ffi.rs
++++ b/rsvg_internals/src/filters/ffi.rs
+@@ -91,7 +91,7 @@ pub fn filter_render(
+     let mut channelmap_arr = [0; 4];
+     unsafe {
+         for i in 0..4 {
+-            channelmap_arr[i] = i32::from(*channelmap.offset(i as isize) - '0' as i8);
++            channelmap_arr[i] = i32::from(*channelmap.offset(i as isize) - '0' as c_char);
+         }
+     }
+ 
+-- 
+2.18.0.rc2
+

librsvg2.spec

@@ -14,6 +14,8 @@ URL:            https://wiki.gnome.org/Projects/LibRsvg
 Source:         http://download.gnome.org/sources/librsvg/2.43/librsvg-%{version}.tar.xz
 # https://gitlab.gnome.org/GNOME/librsvg/commit/60f8afdfe6c5b667c015b2124cd46fd1d5bb07ee
 Patch0001:      0001-deps-bump-regex-to-1.patch
+# https://gitlab.gnome.org/GNOME/librsvg/merge_requests/87
+Patch0002:      0001-fix-casting-in-filter_related.patch
 
 BuildRequires:  gcc
 BuildRequires:  pkgconfig(gdk-pixbuf-2.0) >= 2.20