mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-07-26 06:38:42 +00:00
Jake Bailey
7c3dc05117
* modernize string cut usage * modernize string cut prefix usage * modernize slices helper usage * modernize min and max usage * modernize loop variable copies * modernize integer range loops * modernize map copy loops * modernize go types iterator usage * modernize empty interface usage * modernize atomic type usage * modernize string builders * modernize string split iteration * modernize remaining loop variable copies * modernize usb cdc min usage * modernize src integer range loops * modernize example empty interface usage * modernize src min and max usage * modernize src integer range loops * modernize src empty interface usage * modernize src atomic type usage * modernize reflect type lookups * modernize review nits
78 lines
2.9 KiB
Go
78 lines
2.9 KiB
Go
package builder
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import (
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"errors"
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"fmt"
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"os/exec"
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"runtime"
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"strings"
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"tinygo.org/x/go-llvm"
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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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func init() {
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llvmMajor, _, _ := strings.Cut(llvm.Version, ".")
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commands["clang"] = []string{"clang-" + llvmMajor}
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commands["ld.lld"] = []string{"ld.lld-" + llvmMajor, "ld.lld"}
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commands["wasm-ld"] = []string{"wasm-ld-" + llvmMajor, "wasm-ld"}
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commands["lldb"] = []string{"lldb-" + llvmMajor, "lldb"}
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// Add the path to a Homebrew-installed LLVM 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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var prefix string
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switch runtime.GOARCH {
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case "amd64":
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prefix = "/usr/local/opt/llvm@" + llvmMajor + "/bin/"
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case "arm64":
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prefix = "/opt/homebrew/opt/llvm@" + llvmMajor + "/bin/"
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default:
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// unknown GOARCH
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panic(fmt.Sprintf("unknown GOARCH: %s on darwin", runtime.GOARCH))
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}
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commands["clang"] = append(commands["clang"], prefix+"clang-"+llvmMajor)
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commands["ld.lld"] = append(commands["ld.lld"], prefix+"ld.lld")
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commands["wasm-ld"] = append(commands["wasm-ld"], prefix+"wasm-ld")
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commands["lldb"] = append(commands["lldb"], prefix+"lldb")
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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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commands["lldb"] = append(commands["lldb"], "C:\\Program Files\\LLVM\\bin\\lldb.exe")
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}
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// Add the path to LLVM installed from ports.
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if runtime.GOOS == "freebsd" {
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prefix := "/usr/local/llvm" + llvmMajor + "/bin/"
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commands["clang"] = append(commands["clang"], prefix+"clang-"+llvmMajor)
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commands["ld.lld"] = append(commands["ld.lld"], prefix+"ld.lld")
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commands["wasm-ld"] = append(commands["wasm-ld"], prefix+"wasm-ld")
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commands["lldb"] = append(commands["lldb"], prefix+"lldb")
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}
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}
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// LookupCommand looks up the executable name for a given LLVM tool such as
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// clang or wasm-ld. It returns the (relative) command that can be used to
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// invoke the tool or an error if it could not be found.
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func LookupCommand(name string) (string, error) {
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for _, cmdName := range commands[name] {
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_, err := exec.LookPath(cmdName)
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if err != nil {
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if errors.Unwrap(err) == exec.ErrNotFound {
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continue
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}
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return cmdName, err
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}
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return cmdName, nil
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}
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return "", errors.New("none of these commands were found in your $PATH: " + strings.Join(commands[name], " "))
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}
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