Files
netris-cdc-file-transfer/tools/windows_cc_library.bzl
Christian Schneider 4326e972ac Releasing the former Stadia file transfer tools
The tools allow efficient and fast synchronization of large directory
trees from a Windows workstation to a Linux target machine.

cdc_rsync* support efficient copy of files by using content-defined
chunking (CDC) to identify chunks within files that can be reused.

asset_stream_manager + cdc_fuse_fs support efficient streaming of a
local directory to a remote virtual file system based on FUSE. It also
employs CDC to identify and reuse unchanged data chunks.
2022-11-03 10:39:10 +01:00

92 lines
2.6 KiB
Python

# Copyright 2022 Google LLC
#
# 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.
"""
This is a simple cc_windows_shared_library rule for builing a DLL on Windows
that other cc rules can depend on.
Example useage:
cc_windows_shared_library(
name = "hellolib",
srcs = [
"hello-library.cpp",
],
hdrs = ["hello-library.h"],
# Use this to distinguish compiling vs. linking against the DLL.
copts = ["/DCOMPILING_DLL"],
)
Define COMPILING_DLL to export symbols in the header when compiling the DLL as
follows:
#ifdef COMPILING_DLL
#define DLLEXPORT __declspec(dllexport)
#else
#define DLLEXPORT __declspec(dllimport)
#endif
DLLEXPORT void foo();
For more information and sample usage, see:
https://github.com/bazelbuild/bazel/blob/master/examples/windows/dll/
"""
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_import", "cc_library")
def cc_windows_shared_library(
name,
srcs = [],
deps = [],
hdrs = [],
visibility = None,
**kwargs):
"""A simple cc_windows_shared_library rule for builing a Windows DLL."""
dll_name = name + ".dll"
import_lib_name = name + "_import_lib"
import_target_name = name + "_dll_import"
# Building a shared library requires a cc_binary with linkshared = 1 set.
cc_binary(
name = dll_name,
srcs = srcs + hdrs,
deps = deps,
linkshared = 1,
**kwargs
)
# Get the import library for the dll
native.filegroup(
name = import_lib_name,
srcs = [":" + dll_name],
output_group = "interface_library",
)
# Because we cannot directly depend on cc_binary from other cc rules in deps attribute,
# we use cc_import as a bridge to depend on the dll.
cc_import(
name = import_target_name,
interface_library = ":" + import_lib_name,
shared_library = ":" + dll_name,
)
# Create a new cc_library to also include the headers needed for the shared library
cc_library(
name = name,
hdrs = hdrs,
visibility = visibility,
deps = deps + [
":" + import_target_name,
],
)