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// Copyright 2019 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package main
import (
"path/filepath"
"strings"
)
const skipSysrootAutodetectionFlag = "--cros-skip-wrapper-sysroot-autodetection"
func processSysrootFlag(builder *commandBuilder) {
hadSkipSysrootMagicFlag := false
fromUser := false
userSysroot := ""
builder.transformArgs(func(arg builderArg) string {
switch {
// In rare cases (e.g., glibc), we want all sysroot autodetection logic to be
// disabled. This flag can be passed to disable that.
case arg.value == skipSysrootAutodetectionFlag:
hadSkipSysrootMagicFlag = true
return ""
case arg.fromUser && strings.HasPrefix(arg.value, "--sysroot="):
fromUser = true
sysrootArg := strings.Split(arg.value, "=")
if len(sysrootArg) == 2 {
userSysroot = sysrootArg[1]
}
return arg.value
default:
return arg.value
}
})
if hadSkipSysrootMagicFlag {
return
}
sysroot, syrootPresent := builder.env.getenv("SYSROOT")
if syrootPresent {
builder.updateEnv("SYSROOT=")
}
if sysroot == "" {
// Use the bundled sysroot by default.
sysroot = filepath.Join(builder.rootPath, "usr", builder.target.target)
}
if !fromUser {
builder.addPreUserArgs("--sysroot=" + sysroot)
} else {
sysroot = userSysroot
}
libdir := "-L" + sysroot + "/usr/lib"
if strings.Contains(builder.target.target, "64") {
libdir += "64"
}
builder.addPostUserArgs(libdir)
}
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