mirror of
https://github.com/bazelbuild/rules_cc
synced 2024-11-27 20:43:26 +00:00
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
// Copyright 2020 The Bazel Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstdlib>
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#include <fstream>
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#include <iostream>
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#include <regex> // NOLINT
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#include <unordered_set>
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using std::ifstream;
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using std::regex;
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using std::string;
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using std::unordered_set;
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string getBasename(const string &path) {
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// Assumes we're on an OS with "/" as the path separator
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auto idx = path.find_last_of("/");
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if (idx == string::npos) {
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return path;
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}
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return path.substr(idx + 1);
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}
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// Returns 0 if there are no duplicate basenames in the object files (both via
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// -filelist as well as shell args), 1 otherwise
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int main(int argc, const char *argv[]) {
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unordered_set<string> basenames;
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const regex libRegex = regex(".*\\.a$");
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const regex noArgFlags =
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regex("-static|-s|-a|-c|-L|-T|-D|-no_warning_for_no_symbols");
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const regex singleArgFlags = regex("-arch_only|-syslibroot|-o");
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// Set i to 1 to skip executable path
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for (int i = 1; argv[i] != nullptr; i++) {
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const string arg = argv[i];
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if (arg == "-filelist") {
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ifstream list(argv[i + 1]);
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for (string line; getline(list, line);) {
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const string basename = getBasename(line);
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const auto pair = basenames.insert(basename);
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if (!pair.second) {
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return EXIT_FAILURE;
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}
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}
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list.close();
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i++;
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} else if (regex_match(arg, noArgFlags)) {
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} else if (regex_match(arg, singleArgFlags)) {
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i++;
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} else if (arg[0] == '-') {
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return EXIT_FAILURE;
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// Unrecognized flag, let the wrapper deal with it
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} else if (regex_match(arg, libRegex)) {
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// Archive inputs can remain untouched, as they come from other targets.
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} else {
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const string basename = getBasename(arg);
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const auto pair = basenames.insert(basename);
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if (!pair.second) {
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return EXIT_FAILURE;
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}
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}
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}
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return EXIT_SUCCESS;
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}
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