diff --git a/SOURCES/build-debuginfo-fix.patch b/SOURCES/build-debuginfo-fix.patch
new file mode 100644
index 0000000..03fc300
--- /dev/null
+++ b/SOURCES/build-debuginfo-fix.patch
@@ -0,0 +1,24 @@
+diff -up firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft.cc.debuginfo-fix firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft.cc
+--- firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft.cc.debuginfo-fix	2021-09-01 11:11:46.738285751 +0200
++++ firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft.cc	2021-09-01 11:11:56.127319530 +0200
+@@ -21,7 +21,7 @@
+  *  be found in the AUTHORS file in the root of the source tree.
+  */
+ 
+-#include "modules/audio_processing//utility/ooura_fft.h"
++#include "modules/audio_processing/utility/ooura_fft.h"
+ 
+ #include <math.h>
+ 
+diff -up firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft_sse2.cc.debuginfo-fix firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft_sse2.cc
+--- firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft_sse2.cc.debuginfo-fix	2021-09-01 11:12:26.513428847 +0200
++++ firefox-91.0.1/third_party/libwebrtc/webrtc/modules/audio_processing/utility/ooura_fft_sse2.cc	2021-09-01 11:12:32.117449009 +0200
+@@ -8,7 +8,7 @@
+  *  be found in the AUTHORS file in the root of the source tree.
+  */
+ 
+-#include "modules/audio_processing//utility/ooura_fft.h"
++#include "modules/audio_processing/utility/ooura_fft.h"
+ 
+ #include <emmintrin.h>
+ 
diff --git a/SOURCES/build-rhel7-nasm-dwarf.patch b/SOURCES/build-rhel7-nasm-dwarf.patch
new file mode 100644
index 0000000..5e2ba4a
--- /dev/null
+++ b/SOURCES/build-rhel7-nasm-dwarf.patch
@@ -0,0 +1,12 @@
+diff -up firefox-91.0.1/python/mozbuild/mozbuild/frontend/context.py.rhel7-nasm firefox-91.0.1/python/mozbuild/mozbuild/frontend/context.py
+--- firefox-91.0.1/python/mozbuild/mozbuild/frontend/context.py.rhel7-nasm	2021-08-31 08:02:10.814740774 +0200
++++ firefox-91.0.1/python/mozbuild/mozbuild/frontend/context.py	2021-08-31 08:04:03.967146994 +0200
+@@ -420,7 +420,7 @@ class AsmFlags(BaseCompileFlags):
+                 if self._context.config.substs.get("OS_ARCH") == "WINNT":
+                     debug_flags += ["-F", "cv8"]
+                 elif self._context.config.substs.get("OS_ARCH") != "Darwin":
+-                    debug_flags += ["-F", "dwarf"]
++                    debug_flags += ["-f", "elf32"]
+             elif (
+                 self._context.config.substs.get("OS_ARCH") == "WINNT"
+                 and self._context.config.substs.get("CPU_ARCH") == "aarch64"
diff --git a/SOURCES/process-official-tarball b/SOURCES/process-official-tarball
new file mode 100755
index 0000000..449e7bb
--- /dev/null
+++ b/SOURCES/process-official-tarball
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+rm -rf ./process-tarball-dir
+mkdir ./process-tarball-dir
+tar -xJf $1 --directory process-tarball-dir
+
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/conformance-checkers/html-rdfa/0030-isvalid.html
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/conformance-checkers/html-rdfa/0008-isvalid.html
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/conformance-checkers/html-rdfalite/0030-isvalid.html
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svg
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/css/css-ui/support/cursors/woolly.svg
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/conformance-checkers/html-rdfa/0230-novalid.html
+rm -vf ./process-tarball-dir/*/testing/web-platform/tests/conformance-checkers/html-rdfa/0231-isvalid.html
+rm -vf ./process-tarball-dir/*/layout/inspector/tests/chrome/test_fontVariationsAPI.css
+
+processed_tarball=${1/source/processed-source}
+
+cd ./process-tarball-dir
+tar -cf - ./* | xz -9 -T 0 -f > $processed_tarball
+mv $processed_tarball ..
+cd ..
+
+rm -rf ./process-tarball-dir