execarchive.go

Documentation: cmd/link/internal/ld

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build !wasm && !windows
     6  
     7  package ld
     8  
     9  import (
    10  	"os"
    11  	"os/exec"
    12  	"path/filepath"
    13  	"syscall"
    14  )
    15  
    16  const syscallExecSupported = true
    17  
    18  // execArchive invokes the archiver tool with syscall.Exec(), with
    19  // the expectation that this is the last thing that takes place
    20  // in the linking operation.
    21  func (ctxt *Link) execArchive(argv []string) {
    22  	var err error
    23  	argv0 := argv[0]
    24  	if filepath.Base(argv0) == argv0 {
    25  		argv0, err = exec.LookPath(argv0)
    26  		if err != nil {
    27  			Exitf("cannot find %s: %v", argv[0], err)
    28  		}
    29  	}
    30  	if ctxt.Debugvlog != 0 {
    31  		ctxt.Logf("invoking archiver with syscall.Exec()\n")
    32  	}
    33  	err = syscall.Exec(argv0, argv, os.Environ())
    34  	if err != nil {
    35  		Exitf("running %s failed: %v", argv[0], err)
    36  	}
    37  }
    38
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