# SPDX-FileCopyrightText: Huawei Inc.
#
# SPDX-License-Identifier: Apache-2.0

Patch for //build git repository of OpenHarmony 3.1 codebase.

This integrates with the oniro-openharmony-toolchain or oniro-openharmony-bundle
being installed into //oniro, configuring the codebase to use the toolchain in
//oniro.

Signed-off-by: Esben Haabendal <esben.haabendal@huawei.com>
Upstream-Status: Inappropriate [configuration/integration]

diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
index 9bef481bc4f1..b027f8aa1f70 100755
--- a/build/config/BUILDCONFIG.gn
+++ b/build/config/BUILDCONFIG.gn
@@ -66,7 +66,7 @@ target_os = product_build_config.target_os
 target_cpu = product_build_config.target_cpu
 product_toolchain = product_build_config.product_toolchain_label
 if (product_toolchain == "") {
-  product_toolchain = "//build/toolchain/ohos:ohos_clang_$target_cpu"
+  product_toolchain = "//oniro/sysroots/target:target_clang"
 }
 if (defined(product_build_config.enable_ramdisk)) {
   enable_ramdisk = product_build_config.enable_ramdisk
@@ -199,11 +199,13 @@ declare_args() {
 
   # Allows the path to a custom target toolchain to be injected as a single
   # argument, and set as the default toolchain.
-  custom_toolchain = ""
+  custom_toolchain = "//oniro/sysroots/target:target_clang"
 
   # This should not normally be set as a build argument.  It's here so that
   # every toolchain can pass through the "global" value via toolchain_args().
-  host_toolchain = ""
+  host_toolchain = "//oniro/sysroots/host:clang_x64"
+
+  is_oniro_toolchain = true
 
   # target platform
   target_platform = "phone"
diff --git a/build/config/clang/clang.gni b/build/config/clang/clang.gni
index 5a124ffd3e9a..07680d98c2d5 100755
--- a/build/config/clang/clang.gni
+++ b/build/config/clang/clang.gni
@@ -4,7 +4,7 @@
 
 import("//build/toolchain/toolchain.gni")
 
-default_clang_base_path = "//prebuilts/clang/ohos/${host_platform_dir}/llvm"
+default_clang_base_path = "//oniro/sysroots/host/usr"
 
 declare_args() {
   # Indicates if the build should use the Chrome-specific plugins for enforcing
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index ec42ec55627f..523b08665f40 100755
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -515,6 +515,11 @@ config("compiler") {
       # Gcc does not support ##__VA_ARGS__ when in standards-conforming mode,
       # but we use this feature in several places in Chromium.
       standard_prefix = "gnu"
+
+      # For what it is worth, we end up building with -std=c* instead of
+      #-std=gnu* in some components relying on GNU extensions, we need to
+      # define _GNU_SOURCE manually here as well.
+      defines += [ "_GNU_SOURCE" ]
     }
 
     #   cflags_c += [ "-std=${standard_prefix}11" ]
@@ -682,7 +692,7 @@ config("compiler_cpu_abi") {
   ldflags = []
   defines = []
 
-  if (is_posix && !is_mac) {
+  if (is_posix && !(is_mac || !is_oniro_toolchain)) {
     # CPU architecture. We may or may not be doing a cross compile now, so for
     # simplicity we always explicitly set the architecture.
     if (current_cpu == "x64") {
diff --git a/build/config/ohos/BUILD.gn b/build/config/ohos/BUILD.gn
index aa5ac7cc6629..3db8725133c7 100755
--- a/build/config/ohos/BUILD.gn
+++ b/build/config/ohos/BUILD.gn
@@ -41,6 +41,7 @@ config("compiler") {
     "-Wl,--exclude-libs=libvpx_assembly_arm.a",
   ]
 
+  if (!is_oniro_toolchain) {
   cflags += [ "--target=$abi_target" ]
   include_dirs = [
     "${musl_sysroot}/usr/include/${abi_target}",
@@ -52,6 +53,7 @@ config("compiler") {
   # Assign any flags set for the C compiler to asmflags so that they are sent
   # to the assembler.
   asmflags = cflags
+  }
 }
 
 # This is included by reference in the //build/config/compiler:runtime_library
@@ -71,7 +73,11 @@ config("runtime_library") {
     "_LIBCPP_HAS_MUSL_LIBC",
     "__BUILD_LINUX_WITH_CLANG",
   ]
-  ldflags = [ "-nostdlib" ]
+  if (!is_oniro_toolchain) {
+    ldflags = [ "-nostdlib" ]
+  } else {
+    ldflags = []
+  }
 
   libs = []
 
@@ -80,6 +86,7 @@ config("runtime_library") {
     libs += [ "unwind" ]
   }
 
+  if (!is_oniro_toolchain) {
   ldflags += [
     "-L" +
         rebase_path("${clang_base_path}/lib/${abi_target}/c++", root_build_dir),
@@ -87,9 +87,10 @@ config("runtime_library") {
     "-L" + rebase_path("${clang_base_path}/lib/clang/10.0.1/lib/${abi_target}",
                        root_build_dir),
   ]
+  libs += [ rebase_path(libclang_rt_file) ]
+  }
 
   libs += [
-    rebase_path(libclang_rt_file),
     "c",
     "c++",
     "c++abi",
diff --git a/build/config/ohos/config.gni b/build/config/ohos/config.gni
index 072bce1da9ff..924f034bbbf6 100644
--- a/build/config/ohos/config.gni
+++ b/build/config/ohos/config.gni
@@ -37,5 +37,7 @@ if (is_ohos) {
     assert(false, "Architecture not supported")
   }
 
+  if (!is_oniro_toolchain) {
   libclang_rt_file = "${clang_base_path}/lib/clang/10.0.1/lib/${abi_target}/libclang_rt.builtins.a"
+  }
 }
diff --git a/build/config/ohos/musl.gni b/build/config/ohos/musl.gni
index 2468ca8d5cfe..337095d910f3 100644
--- a/build/config/ohos/musl.gni
+++ b/build/config/ohos/musl.gni
@@ -13,7 +13,11 @@
 
 if (use_musl){
   musl_target_abi_name = "soft"
+  if (!is_oniro_toolchain) {
   musl_target = "//third_party/musl:musl_libs"
   musl_sysroot = get_label_info(musl_target, "target_out_dir")
+  } else {
+  musl_sysroot = "//oniro/sysroots/target"
+  }
   import("//third_party/musl/musl_config.gni")
 }
\ No newline at end of file
diff --git a/build/ohos/ace/ace.gni b/build/ohos/ace/ace.gni
index 60b1082bac9e..b13a3d4561e2 100644
--- a/build/ohos/ace/ace.gni
+++ b/build/ohos/ace/ace.gni
@@ -26,7 +26,7 @@ template("gen_js_obj") {
   action("gen_js_obj_" + name) {
     visibility = [ ":*" ]
 
-    objcopy_tool = "${clang_base_path}/bin/llvm-objcopy"
+    objcopy_tool = "//oniro/sysroots/host/usr/bin/llvm-objcopy"
     platform = "${current_os}_${current_cpu}"
     if (platform == "mingw_x86_64") {
       script =
diff --git a/build/ohos/ndk/ndk.gni b/build/ohos/ndk/ndk.gni
index ce4d5564dd07..aa9d75badfb1 100755
--- a/build/ohos/ndk/ndk.gni
+++ b/build/ohos/ndk/ndk.gni
@@ -128,7 +128,7 @@ template("ohos_ndk_library") {
     # Don't enable cross compile if build_ohos_ndk is false.
     # Cross compiling in this case may cause build failure in some scenario,
     # such as build for ASAN.
-    ndk_toolchains = [ "//build/toolchain/ohos:ohos_clang_${target_cpu}" ]
+    ndk_toolchains = [ "//oniro/sysroots/target:target_clang" ]
   }
 
   _accumulated_deps = []
@@ -140,6 +140,8 @@ template("ohos_ndk_library") {
       _ndk_shlib_directory = "aarch64-linux-ohos"
     } else if (_toolchain == "//build/toolchain/ohos:ohos_clang_x86_64") {
       _ndk_shlib_directory = "x86_64-linux-ohos"
+    } else if (_toolchain == "//oniro/sysroots/target:target_clang") {
+      _ndk_shlib_directory = target_cpu + "-linux-ohos"
     }
 
     assert(defined(_ndk_shlib_directory))
diff --git a/build/templates/cxx/cxx.gni b/build/templates/cxx/cxx.gni
index db2a816e61fc..e43c699b0c52 100755
--- a/build/templates/cxx/cxx.gni
+++ b/build/templates/cxx/cxx.gni
@@ -155,6 +155,11 @@ template("ohos_executable") {
     }
     if (!defined(libs)) {
       libs = []
+      if (is_oniro_toolchain && is_clang) {
+        libs += ["c++", "c++abi"]
+      } else if (is_oniro_toolchain && !is_clang) {
+        libs += ["stdc++"]
+      }
     }
     if (!defined(include_dirs)) {
       include_dirs = []
@@ -462,6 +462,11 @@ template("ohos_shared_library") {
     }
     if (!defined(libs)) {
       libs = []
+      if (is_oniro_toolchain && is_clang) {
+        libs += ["c++", "c++abi"]
+      } else if (is_oniro_toolchain && !is_clang) {
+        libs += ["stdc++"]
+      }
     }
     if (!defined(include_dirs)) {
       include_dirs = []
diff --git a/build/config/linux/BUILD.gn b/build/config/linux/BUILD.gn
index bc30de9ce465..c9a1b152d02d 100755
--- a/build/config/linux/BUILD.gn
+++ b/build/config/linux/BUILD.gn
@@ -37,6 +37,14 @@ config("runtime_library") {
       libs += [ "${asdk_libs_dir}/ndk/libcxx/linux_x86_64/libc++.so" ]
     }
   }
+
+  if (is_oniro_toolchain) {
+    if (is_clang) {
+      libs += [ "c++", "c++abi" ]
+    } else {
+      libs += [ "stdc++" ]
+    }
+  }
 }
 
 config("executable_config") {