Initial Pigweed modules
This change adds Pigweed's first few (incomplete) modules: pw_build,
pw_status, and pw_toolchain. The main scaffolding for Pigweed's GN-based
build system is also included, with a root BUILDCONFIG and BUILD.gn file
defining a top-level modules build target.
Change-Id: I09599443d50696343d6c5b85853cb5cee3ce0026
diff --git a/pw_build/BUILD.gn b/pw_build/BUILD.gn
new file mode 100644
index 0000000..ebe935d
--- /dev/null
+++ b/pw_build/BUILD.gn
@@ -0,0 +1,40 @@
+# Copyright 2019 The Pigweed Authors
+#
+# 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
+#
+# https://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.
+
+# Standard compiler flags to reduce output binary size.
+config("reduced_size") {
+ cflags = [
+ "-fno-common",
+ "-fno-exceptions",
+ "-ffunction-sections",
+ "-fdata-sections",
+ ]
+ cflags_cc = [ "-fno-rtti" ]
+}
+
+config("strict_warnings") {
+ cflags = [
+ "-Wall",
+ "-Wextra",
+ ]
+}
+
+config("cpp17") {
+ cflags_cc = [ "-std=c++17" ]
+}
+
+# Default C++ version for Pigweed modules.
+config("pw_default_cpp") {
+ configs = [ ":cpp17" ]
+}