From 8c9a4027426b0a2c56cc834da0dbad5b8378c2c6 Mon Sep 17 00:00:00 2001
From: Andrej Valek <andrej.valek@siemens.com>
Date: Fri, 17 Apr 2020 09:43:32 +0200
Subject: [PATCH] chromium: icu: use system library only targets

 - use bundled one for native/v8 internal builds

Complete system ICU library using requires ICU dev package
be installed on host. Enabling dependency on native package
is not enough due to V8 hosttools toolchain. V8 toolchain
is not using native sysroot, only a host packages.
On the other hand webenegine does not produce external
native artifacts. So external system ICU linking is not
needed.

Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 chromium/third_party/icu/BUILD.gn | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/chromium/third_party/icu/BUILD.gn b/chromium/third_party/icu/BUILD.gn
index 023d6e13a2c..312f34d6186 100644
--- a/chromium/third_party/icu/BUILD.gn
+++ b/chromium/third_party/icu/BUILD.gn
@@ -7,9 +7,13 @@ import("//build/config/host_byteorder.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/shim_headers.gni")
 import("//third_party/icu/config.gni")
+import("//v8/gni/snapshot_toolchain.gni")
 
 declare_args() {
   use_system_icu = false
+
+  # Use only target icu library, when system using is enabled
+  use_system_icu_target_only = false
 }
 
 if (is_android) {
@@ -20,6 +24,12 @@ if (is_mac) {
   import("//build/config/sanitizers/sanitizers.gni")
 }
 
+if (use_system_icu) {
+  # Use system library only for target, otherwise use bundled
+  if ((current_toolchain != host_toolchain) && (current_toolchain != v8_snapshot_toolchain)) {
+    use_system_icu_target_only = true
+  }
+}
 # Meta target that includes both icuuc and icui18n. Most targets want both.
 # You can depend on the individually if you need to.
 group("icu") {
@@ -1207,7 +1217,7 @@ config("system_icu_config") {
   }
 }
 
-if (use_system_icu) {
+if (use_system_icu_target_only) {
   pkg_config("system_icui18n") {
     packages = [ "icu-i18n" ]
   }
@@ -1420,7 +1430,7 @@ shim_headers("icuuc_shim") {
 }
 
 config("icu_config") {
-  if (use_system_icu) {
+  if (use_system_icu_target_only) {
     configs = [ ":system_icu_config"]
   } else {
     configs = [ ":bundled_icu_config"]
@@ -1428,7 +1438,7 @@ config("icu_config") {
 }
 
 group("icuuc") {
-  if (use_system_icu) {
+  if (use_system_icu_target_only) {
     deps = [ ":icuuc_shim" ]
     public_configs = [
       ":system_icu_config",
@@ -1440,7 +1450,7 @@ group("icuuc") {
 }
 
 group("icui18n") {
-  if (use_system_icu) {
+  if (use_system_icu_target_only) {
     deps = [ ":icui18n_shim" ]
     public_configs = [
       ":system_icu_config",