1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
#!/usr/bin/env python3
# Copyright 2020 gRPC 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
#
# 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 based on the script on the Envoy project
# https://github.com/envoyproxy/envoy/blob/master/tools/gen_compilation_database.py
import argparse
import glob
import json
import logging
import os
from pathlib import Path
import re
import shlex
import subprocess
RE_INCLUDE_SYSTEM = re.compile("\s*-I\s+/usr/[^ ]+")
# This method is equivalent to https://github.com/grailbio/bazel-compilation-database/blob/master/generate.sh
def generateCompilationDatabase(args):
# We need to download all remote outputs for generated source code.
# This option lives here to override those specified in bazelrc.
bazel_options = shlex.split(os.environ.get("BAZEL_BUILD_OPTIONS", "")) + [
"--config=compdb",
"--remote_download_outputs=all",
]
subprocess.check_call(["bazel", "build"] + bazel_options + [
"--aspects=@bazel_compdb//:aspects.bzl%compilation_database_aspect",
"--output_groups=compdb_files,header_files"
] + args.bazel_targets)
execroot = subprocess.check_output(["bazel", "info", "execution_root"] +
bazel_options).decode().strip()
compdb = []
for compdb_file in Path(execroot).glob("**/*.compile_commands.json"):
compdb.extend(
json.loads(
"[" +
compdb_file.read_text().replace("__EXEC_ROOT__", execroot) +
"]"))
if args.dedup_targets:
compdb_map = {target["file"]: target for target in compdb}
compdb = list(compdb_map.values())
return compdb
def isHeader(filename):
for ext in (".h", ".hh", ".hpp", ".hxx"):
if filename.endswith(ext):
return True
return False
def isCompileTarget(target, args):
filename = target["file"]
if not args.include_headers and isHeader(filename):
return False
if not args.include_genfiles:
if filename.startswith("bazel-out/"):
return False
if not args.include_external:
if filename.startswith("external/"):
return False
return True
def modifyCompileCommand(target, args):
cc, options = target["command"].split(" ", 1)
# Workaround for bazel added C++11 options, those doesn't affect build itself but
# clang-tidy will misinterpret them.
options = options.replace("-std=c++0x ", "")
options = options.replace("-std=c++11 ", "")
if args.vscode:
# Visual Studio Code doesn't seem to like "-iquote". Replace it with
# old-style "-I".
options = options.replace("-iquote ", "-I ")
if args.ignore_system_headers:
# Remove all include options for /usr/* directories
options = RE_INCLUDE_SYSTEM.sub("", options)
if isHeader(target["file"]):
options += " -Wno-pragma-once-outside-header -Wno-unused-const-variable"
options += " -Wno-unused-function"
if not target["file"].startswith("external/"):
# *.h file is treated as C header by default while our headers files are all C++11.
options = "-x c++ -std=c++11 -fexceptions " + options
target["command"] = " ".join([cc, options])
return target
def fixCompilationDatabase(args, db):
db = [
modifyCompileCommand(target, args)
for target in db
if isCompileTarget(target, args)
]
with open("compile_commands.json", "w") as db_file:
json.dump(db, db_file, indent=2)
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description='Generate JSON compilation database')
parser.add_argument('--include_external', action='store_true')
parser.add_argument('--include_genfiles', action='store_true')
parser.add_argument('--include_headers', action='store_true')
parser.add_argument('--vscode', action='store_true')
parser.add_argument('--ignore_system_headers', action='store_true')
parser.add_argument('--dedup_targets', action='store_true')
parser.add_argument('bazel_targets', nargs='*', default=["//..."])
args = parser.parse_args()
fixCompilationDatabase(args, generateCompilationDatabase(args))
|
