5b34713d41
This commit adds the TinyGo root directory (`TINYGOROOT`) to the linker script `-L` search path, so that linker scripts can be found when running `tinygo` outside of the TinyGo root. This was already working before when using an external linker by setting the working directory, but this is not possible when using the internal linker. However, by adding the root directory to the linker search path (`-L`), it can now find these linker scripts. fixes #265
65 строки
1,7 КиБ
Go
65 строки
1,7 КиБ
Go
// +build byollvm
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package main
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// This file provides a Link() function that uses the bundled lld if possible.
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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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"unsafe"
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)
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/*
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#include <stdbool.h>
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#include <stdlib.h>
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bool tinygo_link_elf(int argc, char **argv);
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bool tinygo_link_wasm(int argc, char **argv);
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*/
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import "C"
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// Link invokes a linker with the given name and flags.
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//
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// This version uses the built-in linker when trying to use lld.
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func Link(linker string, flags ...string) error {
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switch linker {
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case "ld.lld", commands["ld.lld"]:
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flags = append([]string{"tinygo:" + linker}, flags...)
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var cflag *C.char
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buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
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cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
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for i, flag := range flags {
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cflag := C.CString(flag)
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cflags[i] = cflag
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defer C.free(unsafe.Pointer(cflag))
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}
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ok := C.tinygo_link_elf(C.int(len(flags)), (**C.char)(buf))
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if !ok {
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return errors.New("failed to link using built-in ld.lld")
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}
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return nil
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case "wasm-ld", commands["wasm-ld"]:
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flags = append([]string{"tinygo:" + linker}, flags...)
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var cflag *C.char
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buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
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defer C.free(buf)
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cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
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for i, flag := range flags {
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cflag := C.CString(flag)
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cflags[i] = cflag
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defer C.free(unsafe.Pointer(cflag))
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}
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ok := C.tinygo_link_wasm(C.int(len(flags)), (**C.char)(buf))
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if !ok {
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return errors.New("failed to link using built-in wasm-ld")
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}
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return nil
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default:
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// Fall back to external command.
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cmd := exec.Command(linker, flags...)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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return cmd.Run()
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}
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}
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