Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)

qt5-qtwebengine.spec

@@ -100,6 +100,9 @@ Patch12: qtwebengine-opensource-src-5.9.0-webrtc-neon-detect.patch
 Patch20: qtwebengine-opensource-src-5.8.0-qt57.patch
 # Force verbose output from the GN bootstrap process
 Patch21: qtwebengine-opensource-src-5.9.0-gn-bootstrap-verbose.patch
+# Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)
+# https://codereview.qt-project.org/196178
+Patch100: qtwebengine-opensource-src-5.9.0-gn-aarch64.patch
 
 %if 0%{?fedora} && 0%{?fedora} < 25
 # work around missing qt5_qtwebengine_arches macro on F24
@@ -344,6 +347,7 @@ BuildArch: noarch
 %patch12 -p1 -b .webrtc-neon-detect
 %patch20 -p1 -b .qt57
 %patch21 -p1 -b .gn-bootstrap-verbose
+%patch100 -p1 -b .gn-aarch64
 # fix // in #include in content/renderer/gpu to avoid debugedit failure
 sed -i -e 's!gpu//!gpu/!g' \
   src/3rdparty/chromium/content/renderer/gpu/compositor_forwarding_message_filter.cc
@@ -557,6 +561,7 @@ done
 - Drop the flag hacks (-g1 -fno-delete-null-pointer-checks) that are fixed
   upstream, force -g2 on x86_64 instead
 - Force verbose output from the GN bootstrap process
+- Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)
 
 * Sat May 13 2017 Rex Dieter <rdieter@fedoraproject.org> - 5.8.0-14
 - fix rpm macros

qtwebengine-opensource-src-5.9.0-gn-aarch64.patch

@@ -0,0 +1,43 @@
+From 801c957651fba94b5d7dde9cc490378a4dc3a987 Mon Sep 17 00:00:00 2001
+From: Allan Sandfeld Jensen <allan.jensen@qt.io>
+Date: Thu, 1 Jun 2017 11:40:02 +0200
+Subject: [PATCH] [Backport] GN: Add Arm64 Linux support
+
+Add Arm64 linux support be able to build GN binary for
+native arm64 builds.
+
+R=dpranke@chromium.org, brettw@chromium.org
+
+Review-Url: https://codereview.chromium.org/2550673002
+
+Task-number: QTBUG-61128
+Change-Id: I3aa6b6ca7df374428a7f4a8b4db9f488a8926f6c
+Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
+---
+ chromium/tools/gn/args.cc | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/3rdparty/chromium/tools/gn/args.cc b/src/3rdparty/chromium/tools/gn/args.cc
+index 7285d7a..54703e1 100644
+--- a/src/3rdparty/chromium/tools/gn/args.cc
++++ b/src/3rdparty/chromium/tools/gn/args.cc
+@@ -266,6 +266,7 @@ void Args::SetSystemVarsLocked(Scope* dest) const {
+   static const char kX86[] = "x86";
+   static const char kX64[] = "x64";
+   static const char kArm[] = "arm";
++  static const char kArm64[] = "arm64";
+   static const char kMips[] = "mipsel";
+   static const char kS390X[] = "s390x";
+   static const char kPPC64[] = "ppc64";
+@@ -280,6 +281,8 @@ void Args::SetSystemVarsLocked(Scope* dest) const {
+     arch = kX64;
+   else if (os_arch.substr(0, 3) == "arm")
+     arch = kArm;
++  else if (os_arch == "aarch64")
++    arch = kArm64;
+   else if (os_arch == "mips")
+     arch = kMips;
+   else if (os_arch == "s390x")
+-- 
+2.7.4
+