tools/gen_bazel: Standalone Bazel build
Updates the gen_bazel generator and generates
a BUILD file that allows to build traced, traced_probes
perfetto and trace_processor both on Linux and Mac.
This also allows easy integration with google internal builds.
The major differences of the new generator are:
1. Uses the new way of dealing with protobuf libraries
(proto_library -> cc_proto_library -> executable target
see go/new-proto-library)
2. Instead of repeating all the source files in each target
it creates Bazel filegroup(s) out of GN source_set(s).
While doing so it takes care of propagating up flags and
dependencies. This is because Bazel filegroup(s),
conversely to GN source_set(s), are pure bags of sources.
Still missing:
- cflags / ldflags propagation into Bazel.
- Android toolchain (perhaps will never happen)
This will require a matching change to Google internal
sources.
Test: bazel build //:all
Change-Id: Ic1c725bd83e2a5e92eebb5c5b34728cf6d5983e6
diff --git a/bazel/zlib.BUILD b/bazel/zlib.BUILD
new file mode 100644
index 0000000..1557352
--- /dev/null
+++ b/bazel/zlib.BUILD
@@ -0,0 +1,54 @@
+# Copyright (C) 2019 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.
+
+cc_library(
+ name = "zlib",
+ srcs = [
+ "src/adler32.c",
+ "src/compress.c",
+ "src/crc32.c",
+ "src/crc32.h",
+ "src/deflate.c",
+ "src/deflate.h",
+ "src/gzclose.c",
+ "src/gzguts.h",
+ "src/gzlib.c",
+ "src/gzread.c",
+ "src/gzwrite.c",
+ "src/infback.c",
+ "src/inffast.c",
+ "src/inffast.h",
+ "src/inffixed.h",
+ "src/inflate.c",
+ "src/inflate.h",
+ "src/inftrees.c",
+ "src/inftrees.h",
+ "src/trees.c",
+ "src/trees.h",
+ "src/uncompr.c",
+ "src/zconf.h",
+ "src/zlib.h",
+ "src/zutil.c",
+ "src/zutil.h",
+ ],
+ hdrs = [
+ "zlib.h",
+ ],
+ copts = [
+ "-DHAVE_HIDDEN",
+ "-Isrc",
+ ],
+ includes = ["zlib"],
+ visibility = ["//visibility:public"],
+)