Skip to content
Permalink
Branch: master
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
67 lines (61 sloc) 1.74 KB
// +build byollvm
package main
// This file provides a Link() function that uses the bundled lld if possible.
import (
"errors"
"os"
"os/exec"
"unsafe"
)
/*
#include <stdbool.h>
#include <stdlib.h>
bool tinygo_link_elf(int argc, char **argv);
bool tinygo_link_wasm(int argc, char **argv);
*/
import "C"
// Link invokes a linker with the given name and flags.
//
// This version uses the built-in linker when trying to use lld.
func Link(dir, linker string, flags ...string) error {
switch linker {
case "ld.lld", commands["ld.lld"]:
flags = append([]string{"tinygo:" + linker}, flags...)
var cflag *C.char
buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
for i, flag := range flags {
cflag := C.CString(flag)
cflags[i] = cflag
defer C.free(unsafe.Pointer(cflag))
}
ok := C.tinygo_link_elf(C.int(len(flags)), (**C.char)(buf))
if !ok {
return errors.New("failed to link using built-in ld.lld")
}
return nil
case "wasm-ld", commands["wasm-ld"]:
flags = append([]string{"tinygo:" + linker}, flags...)
var cflag *C.char
buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
defer C.free(buf)
cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
for i, flag := range flags {
cflag := C.CString(flag)
cflags[i] = cflag
defer C.free(unsafe.Pointer(cflag))
}
ok := C.tinygo_link_wasm(C.int(len(flags)), (**C.char)(buf))
if !ok {
return errors.New("failed to link using built-in wasm-ld")
}
return nil
default:
// Fall back to external command.
cmd := exec.Command(linker, flags...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Dir = dir
return cmd.Run()
}
}
You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.