mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:00:13 +01:00
Richard Smith
c703c89658
Previously explorer worked under `bazel run` but not when run directly, because it was finding the prelude relative to the current working directory. Now it looks for it relative to the location of the binary, so it works both when run directly and when run with `bazel run`.
33 lines
1.3 KiB
C++
33 lines
1.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "explorer/main.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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auto main(int argc, char** argv) -> int {
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// This assumes execution from `bazel-bin/explorer`, either directly or with
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// `bazel run`.
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static int static_for_main_addr;
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std::string exe = llvm::sys::fs::getMainExecutable(
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argv[0], static_cast<void*>(&static_for_main_addr));
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llvm::SmallString<256> prelude_path = llvm::sys::path::parent_path(exe);
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llvm::sys::path::append(prelude_path, "explorer.runfiles", "carbon",
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"explorer", "data");
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llvm::sys::path::append(prelude_path, "prelude.carbon");
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// Behave as if the working directory is where `bazel run` was invoked.
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char* build_working_dir = getenv("BUILD_WORKING_DIRECTORY");
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if (build_working_dir != nullptr) {
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if (std::error_code err =
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llvm::sys::fs::set_current_path(build_working_dir)) {
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llvm::errs() << "Failed to set working directory: " << err.message();
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return 1;
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}
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}
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return Carbon::ExplorerMain(prelude_path, argc, argv);
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}
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