mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-07-26 06:38:42 +00:00
Ayke van Laethem
c6acaa981d
This is a problem on Guix, which sets C_INCLUDE_PATH that is not affected by `-nostdlibinc`. And therefore it affects the build in unintended ways. Removing all environmental variables fixes this issue, and perhaps also other issues caused by Clang being affected by environment variables.
78 lines
2.9 KiB
Go
78 lines
2.9 KiB
Go
package builder
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os/exec"
|
|
"runtime"
|
|
"strings"
|
|
|
|
"tinygo.org/x/go-llvm"
|
|
)
|
|
|
|
// Commands lists command alternatives for various operating systems. These
|
|
// commands may have a slightly different name across operating systems and
|
|
// distributions or may not even exist in $PATH, in which case absolute paths
|
|
// may be used.
|
|
var commands = map[string][]string{}
|
|
|
|
func init() {
|
|
llvmMajor := strings.Split(llvm.Version, ".")[0]
|
|
commands["clang"] = []string{"clang-" + llvmMajor}
|
|
commands["ld.lld"] = []string{"ld.lld-" + llvmMajor, "ld.lld"}
|
|
commands["wasm-ld"] = []string{"wasm-ld-" + llvmMajor, "wasm-ld"}
|
|
commands["lldb"] = []string{"lldb-" + llvmMajor, "lldb"}
|
|
// Add the path to a Homebrew-installed LLVM for ease of use (no need to
|
|
// manually set $PATH).
|
|
if runtime.GOOS == "darwin" {
|
|
var prefix string
|
|
switch runtime.GOARCH {
|
|
case "amd64":
|
|
prefix = "/usr/local/opt/llvm@" + llvmMajor + "/bin/"
|
|
case "arm64":
|
|
prefix = "/opt/homebrew/opt/llvm@" + llvmMajor + "/bin/"
|
|
default:
|
|
// unknown GOARCH
|
|
panic(fmt.Sprintf("unknown GOARCH: %s on darwin", runtime.GOARCH))
|
|
}
|
|
commands["clang"] = append(commands["clang"], prefix+"clang-"+llvmMajor)
|
|
commands["ld.lld"] = append(commands["ld.lld"], prefix+"ld.lld")
|
|
commands["wasm-ld"] = append(commands["wasm-ld"], prefix+"wasm-ld")
|
|
commands["lldb"] = append(commands["lldb"], prefix+"lldb")
|
|
}
|
|
// Add the path for when LLVM was installed with the installer from
|
|
// llvm.org, which by default doesn't add LLVM to the $PATH environment
|
|
// variable.
|
|
if runtime.GOOS == "windows" {
|
|
commands["clang"] = append(commands["clang"], "clang", "C:\\Program Files\\LLVM\\bin\\clang.exe")
|
|
commands["ld.lld"] = append(commands["ld.lld"], "lld", "C:\\Program Files\\LLVM\\bin\\lld.exe")
|
|
commands["wasm-ld"] = append(commands["wasm-ld"], "C:\\Program Files\\LLVM\\bin\\wasm-ld.exe")
|
|
commands["lldb"] = append(commands["lldb"], "C:\\Program Files\\LLVM\\bin\\lldb.exe")
|
|
}
|
|
// Add the path to LLVM installed from ports.
|
|
if runtime.GOOS == "freebsd" {
|
|
prefix := "/usr/local/llvm" + llvmMajor + "/bin/"
|
|
commands["clang"] = append(commands["clang"], prefix+"clang-"+llvmMajor)
|
|
commands["ld.lld"] = append(commands["ld.lld"], prefix+"ld.lld")
|
|
commands["wasm-ld"] = append(commands["wasm-ld"], prefix+"wasm-ld")
|
|
commands["lldb"] = append(commands["lldb"], prefix+"lldb")
|
|
}
|
|
}
|
|
|
|
// LookupCommand looks up the executable name for a given LLVM tool such as
|
|
// clang or wasm-ld. It returns the (relative) command that can be used to
|
|
// invoke the tool or an error if it could not be found.
|
|
func LookupCommand(name string) (string, error) {
|
|
for _, cmdName := range commands[name] {
|
|
_, err := exec.LookPath(cmdName)
|
|
if err != nil {
|
|
if errors.Unwrap(err) == exec.ErrNotFound {
|
|
continue
|
|
}
|
|
return cmdName, err
|
|
}
|
|
return cmdName, nil
|
|
}
|
|
return "", errors.New("none of these commands were found in your $PATH: " + strings.Join(commands[name], " "))
|
|
}
|