55 строки
1,9 КиБ
Go
55 строки
1,9 КиБ
Go
package builder
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import (
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"errors"
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"os"
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"os/exec"
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"runtime"
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"strings"
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)
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// Commands lists command alternatives for various operating systems. These
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// commands may have a slightly different name across operating systems and
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// distributions or may not even exist in $PATH, in which case absolute paths
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// may be used.
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var commands = map[string][]string{
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"clang": {"clang-9"},
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"ld.lld": {"ld.lld-9", "ld.lld"},
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"wasm-ld": {"wasm-ld-9", "wasm-ld"},
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}
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func init() {
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// Add the path to a Homebrew-installed LLVM 9 for ease of use (no need to
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// manually set $PATH).
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if runtime.GOOS == "darwin" {
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commands["clang"] = append(commands["clang"], "/usr/local/opt/llvm@9/bin/clang-9")
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commands["ld.lld"] = append(commands["ld.lld"], "/usr/local/opt/llvm@9/bin/ld.lld")
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commands["wasm-ld"] = append(commands["wasm-ld"], "/usr/local/opt/llvm@9/bin/wasm-ld")
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}
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// Add the path for when LLVM was installed with the installer from
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// llvm.org, which by default doesn't add LLVM to the $PATH environment
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// variable.
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if runtime.GOOS == "windows" {
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commands["clang"] = append(commands["clang"], "clang", "C:\\Program Files\\LLVM\\bin\\clang.exe")
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commands["ld.lld"] = append(commands["ld.lld"], "lld", "C:\\Program Files\\LLVM\\bin\\lld.exe")
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commands["wasm-ld"] = append(commands["wasm-ld"], "C:\\Program Files\\LLVM\\bin\\wasm-ld.exe")
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}
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}
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func execCommand(cmdNames []string, args ...string) error {
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for _, cmdName := range cmdNames {
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cmd := exec.Command(cmdName, args...)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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err := cmd.Run()
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if err != nil {
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if err, ok := err.(*exec.Error); ok && (err.Err == exec.ErrNotFound || err.Err.Error() == "file does not exist") {
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// this command was not found, try the next
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continue
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}
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return err
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}
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return nil
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}
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return errors.New("none of these commands were found in your $PATH: " + strings.Join(cmdNames, " "))
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}
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