Move build -> gn/standalone
Make it explicit that those gn files are only for the standalone
build.
Bug: 68710794
Change-Id: I7e2a15219d63b62bf8f249becfdbf39fda2cc183
diff --git a/gn/standalone/BUILD.gn b/gn/standalone/BUILD.gn
new file mode 100644
index 0000000..59f60fd
--- /dev/null
+++ b/gn/standalone/BUILD.gn
@@ -0,0 +1,200 @@
+# Copyright (C) 2017 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//gn/standalone/android.gni")
+import("//gn/standalone/sanitizers/sanitizers.gni")
+
+config("extra_warnings") {
+ cflags = [
+ "-Wextra",
+ "-Wno-missing-field-initializers",
+ "-Wno-unused-parameter",
+ ]
+ if (is_clang) {
+ cflags += [
+ "-Weverything",
+ "-Wno-c++98-compat-pedantic",
+ "-Wno-c++98-compat",
+ "-Wno-gnu-include-next",
+ "-Wno-gnu-statement-expression",
+ "-Wno-gnu-zero-variadic-macro-arguments",
+ "-Wno-padded",
+ "-Wno-reserved-id-macro",
+ "-Wno-weak-vtables",
+ ]
+ }
+}
+
+config("no_exceptions") {
+ cflags = [ "-fno-exceptions" ]
+}
+
+config("no_rtti") {
+ cflags = [ "-fno-rtti" ]
+}
+
+config("default") {
+ asmflags = []
+ cflags = []
+ cflags_c = []
+ cflags_cc = []
+ defines = []
+ ldflags = []
+ libs = []
+
+ cflags_cc += [ "-std=c++11" ]
+
+ cflags += [
+ "-fstrict-aliasing",
+ "-fstack-protector",
+ "-fPIC",
+ "-Wa,--noexecstack",
+ "-Wformat",
+ "-Wall",
+ "-Werror",
+ ]
+
+ # Color compiler output, see https://github.com/ninja-build/ninja/wiki/FAQ
+ if (is_clang) {
+ cflags += [
+ "-fcolor-diagnostics",
+ "-Wno-unknown-warning-option",
+ ]
+ } else {
+ cflags += [ "-Wno-unknown-warning" ]
+ }
+
+ if (current_cpu == "arm") {
+ cflags += [
+ "-march=armv7-a",
+ "-mfpu=neon",
+ "-mthumb",
+ ]
+ } else if (current_cpu == "x86") {
+ asmflags += [ "-m32" ]
+ cflags += [
+ "-m32",
+ "-msse2",
+ "-mfpmath=sse",
+ ]
+ ldflags += [ "-m32" ]
+ }
+
+ if (is_linux) {
+ libs += [
+ "pthread",
+ "rt",
+ ]
+ }
+
+ if (is_android) {
+ libs += [ "log" ]
+ }
+
+ if (is_android) {
+ asmflags += [ "--target=$android_abi_target" ]
+ cflags += [
+ "--sysroot=$android_compile_sysroot",
+ "-isystem$android_compile_sysroot/$android_compile_sysroot_subdir",
+ "-isystem$android_compile_sysroot",
+ "-DANDROID",
+ "-D__ANDROID_API__=21",
+ "--target=$android_abi_target",
+ ]
+ cflags_cc += [
+ "-I$android_ndk_root/sources/cxx-stl/llvm-libc++/include",
+ "-I$android_ndk_root/sources/android/support/include",
+ "-I$android_ndk_root/sources/cxx-stl/llvm-libc++abi/include",
+ ]
+ ldflags += [
+ "-Wl,-z,nocopyreloc",
+ "-gcc-toolchain",
+ "$android_toolchain_root",
+ "--sysroot=$android_ndk_root/$android_link_sysroot_subdir",
+ "--target=$android_abi_target",
+ "-Wl,--exclude-libs,libunwind.a",
+ "-Wl,--exclude-libs,libgcc.a",
+ "-Wl,--exclude-libs,libc++_static.a",
+ "-Wl,--build-id",
+ "-Wl,--no-undefined",
+ "-Wl,-z,noexecstack",
+ "-Wl,-z,relro",
+ "-Wl,-z,now",
+ "-Wl,--warn-shared-textrel",
+ "-Wl,--fatal-warnings",
+ ]
+ lib_dirs = [ "$android_ndk_root/sources/cxx-stl/llvm-libc++/libs/$android_app_abi" ]
+ libs += [
+ "gcc",
+ "c++_static",
+ "c++abi",
+ "android_support",
+ ]
+ }
+}
+
+config("debug_symbols") {
+ if (is_android) {
+ cflags = [
+ "-gline-tables-only",
+ "-funwind-tables",
+ ]
+ } else {
+ cflags = [ "-g2" ]
+ }
+}
+
+config("release") {
+ cflags = [
+ "-O3",
+ "-fdata-sections",
+ "-ffunction-sections",
+ ]
+ if (is_mac) {
+ ldflags = [ "-dead_strip" ]
+ } else {
+ ldflags = [ "-Wl,--gc-sections" ]
+ }
+ defines = [ "NDEBUG" ]
+}
+
+config("shared_library") {
+ if (is_android || is_linux) {
+ ldflags = [ "-fPIC" ]
+ }
+}
+
+config("executable") {
+ ldflags = []
+
+ # Android will refuse to run executables if they aren't position independent.
+ # Instead on Linux there isn't any need and they break ASan (goo.gl/paFR6K).
+ if (is_android) {
+ asmflags = [ "-fPIE" ]
+ cflags = [ "-fPIE" ]
+ ldflags += [ "-pie" ]
+ }
+
+ # -rpath stores the path to the linked shared libraries into the binary, so
+ # that they can be launched without passing any LD_LIBRARY_PATH. It's
+ # supported only by Linux, not Android. But concretely we need this only when
+ # use_custom_libcxx=true && custom_libcxx_is_static=false, which happens only
+ # on Linux right now.
+ if (is_linux) {
+ ldflags += [
+ "-Wl,-rpath=\$ORIGIN/.",
+ "-Wl,-rpath-link=.",
+ ]
+ }
+}
