[gnome-boxes] flatpak: Copy config scripts from host for portablexdr

[Felipe Borges <felipeborges src gnome org>]

commit 637475d4929e2e99f404cd2523447dd8f9a2d3ff
Author: Felipe Borges <felipeborges gnome org>
Date:   Tue Aug 27 14:55:49 2019 +0300

    flatpak: Copy config scripts from host for portablexdr
    
    Same ol' config.guess and config.sub shenanigans with autotools.
    
    This will fix our nightly build in aarch64. See
    
https://gnome1.codethink.co.uk/logs/build-2019-08-27-091101/build-gnome-apps-nightly-master-org.gnome.Boxes-aarch64.txt

 build-aux/flatpak/org.gnome.Boxes.json | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Boxes.json b/build-aux/flatpak/org.gnome.Boxes.json
index 88a9a181..3a0b09a9 100644
--- a/build-aux/flatpak/org.gnome.Boxes.json
+++ b/build-aux/flatpak/org.gnome.Boxes.json
@@ -101,11 +101,27 @@
         },
         {
             "name" : "portablexdr",
+            "buildsystem" : "autotools",
+            "config-opts" : ["--disable-static"],
             "sources" : [
                 {
                     "type" : "archive",
                     "url" : "https://people.redhat.com/~rjones/portablexdr/files/portablexdr-4.9.1.tar.gz";,
                     "sha256" : "5cf4bdd153cf4d44eaf10b725f451d0cfadc070b4b9a9ccfb64094b8f78de72c"
+                },
+                {
+                    "type": "script",
+                    "dest-filename": "autogen.sh",
+                    "commands": [
+                        "AUTOMAKE=\"automake --foreign\" autoreconf -vfi"
+                    ]
+                },
+                {
+                    "type": "shell",
+                    "commands": [
+                        "cp -f /usr/share/gnu-config/config.sub .",
+                        "cp -f /usr/share/gnu-config/config.guess ."
+                    ]
                 }
             ]
         },