| // Copyright 2018 syzkaller project authors. All rights reserved. |
| // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "fmt" |
| "os" |
| "os/exec" |
| "runtime" |
| "strconv" |
| "strings" |
| |
| "github.com/google/syzkaller/sys/targets" |
| ) |
| |
| func main() { |
| hostOS := or(os.Getenv("HOSTOS"), runtime.GOOS) |
| hostArch := or(os.Getenv("HOSTARCH"), runtime.GOARCH) |
| targetOS := or(os.Getenv("TARGETOS"), hostOS) |
| targetArch := or(os.Getenv("TARGETARCH"), hostArch) |
| targetVMArch := or(os.Getenv("TARGETVMARCH"), targetArch) |
| target := targets.Get(targetOS, targetArch) |
| if target == nil { |
| fmt.Printf("unknown target %v/%v\n", targetOS, targetArch) |
| os.Exit(1) |
| } |
| type Var struct { |
| Name string |
| Val string |
| } |
| vars := []Var{ |
| {"BUILDOS", runtime.GOOS}, |
| {"NATIVEBUILDOS", target.BuildOS}, |
| {"HOSTOS", hostOS}, |
| {"HOSTARCH", hostArch}, |
| {"TARGETOS", targetOS}, |
| {"TARGETARCH", targetArch}, |
| {"TARGETVMARCH", targetVMArch}, |
| {"CC", target.CCompiler}, |
| {"ADDCFLAGS", strings.Join(target.CrossCFlags, " ")}, |
| {"NCORES", strconv.Itoa(runtime.NumCPU())}, |
| {"EXE", target.ExeExtension}, |
| {"NATIVEBUILDOS", target.BuildOS}, |
| } |
| if targetOS != runtime.GOOS { |
| if _, err := exec.LookPath(target.CCompiler); err != nil { |
| vars = append(vars, Var{"NO_CROSS_COMPILER", "yes"}) |
| } |
| } |
| for _, v := range vars { |
| fmt.Printf("export %v=%v\\n", v.Name, v.Val) |
| } |
| } |
| |
| func or(s1, s2 string) string { |
| if s1 != "" { |
| return s1 |
| } |
| return s2 |
| } |