From 344e8a3945a29239dd2f27ea4969e3d64d5d8911 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 73673fa20ac..a656692c7bf 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) {
@@ -23,6 +27,12 @@ if (is_mac) {
 assert(!icu_disable_thin_archive || !is_component_build,
        "icu_disable_thin_archive only works in static library builds")
 
+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") {
@@ -1222,7 +1232,7 @@ config("system_icu_config") {
   }
 }
 
-if (use_system_icu) {
+if (use_system_icu_target_only) {
   pkg_config("system_icui18n") {
     packages = [ "icu-i18n" ]
   }
@@ -1435,7 +1445,7 @@ 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"]
@@ -1443,7 +1453,7 @@ config("icu_config") {
 }
 
 group("icuuc") {
-  if (use_system_icu) {
+  if (use_system_icu_target_only) {
     deps = [ ":icuuc_shim" ]
     public_configs = [
       ":system_icu_config",
@@ -1455,7 +1465,7 @@ group("icuuc") {
 }
 
 group("icui18n") {
-  if (use_system_icu) {
+  if (use_system_icu_target_only) {
     deps = [ ":icui18n_shim" ]
     public_configs = [
       ":system_icu_config",