# Test that syso in deps is available to cgo.

[!compiler:gc] skip 'requires syso support'
[!cgo] skip
[short] skip 'invokes system C compiler'

# External linking is not supported on linux/ppc64.
# See: https://github.com/golang/go/issues/8912
[GOOS:linux] [GOARCH:ppc64] skip

cc -c -o syso/x.syso syso/x.c
cc -c -o syso2/x.syso syso2/x.c
go build m/cgo

-- go.mod --
module m

go 1.18
-- cgo/x.go --
package cgo

esac

docker build $platform $buildargs --build-arg GOARCH=$GOARCH -t goboring:$GOARCH .
id=$(docker create $platform goboring:$GOARCH)
docker cp $id:/boring/godriver/goboringcrypto_linux_$GOARCH.syso ./syso
docker rm $id

// Code generated by mkcgo.sh. DO NOT EDIT.

//go:build race

'

convert() {
	(echo "$hdr"; go tool cgo -dynpackage race -dynimport $1) | gofmt
}

convert race_darwin_arm64.syso >race_darwin_arm64.go

---

This directory holds the core of the BoringCrypto implementation
as well as the build scripts for the module itself: syso/*.syso.

syso/goboringcrypto_linux_amd64.syso is built with:

	GOARCH=amd64 ./build.sh

syso/goboringcrypto_linux_arm64.syso is built with:

	GOARCH=arm64 ./build.sh

Both run on an x86 Debian Linux system using Docker.
For the arm64 build to run on an x86 system, you need

//
// rsrc.syso is created using llvm with:
//    {i686,x86_64,armv7,arm64}-w64-mingw32-windres -i a.rc -o rsrc_$GOARCH.syso -O coff
// where this windres calls into llvm-rc and llvm-cvtres. The source file,
// a.rc, simply contains a reference to its own bytes:
//
//    resname RCDATA a.rc
//
// Object dumping the resultant rsrc.syso, we can see the split sections and
// the @feat.00 SEH symbol:

// this in turn ensures that runtime uses pthread_create to create threads.
// The prebuilt race runtime lives in race_GOOS_GOARCH.syso.
// Calls to the runtime are done directly from src/runtime/race.go.

// On darwin we always use system DLLs to create threads,
// so we use race_darwin_$GOARCH.go to provide the syso-derived
// symbol information without needing to invoke cgo.
// This allows -race to be used on Mac systems without a C toolchain.

env GO111MODULE=off
[short] skip

# This test tests that we can link in-package syso files that provides symbols
# for cgo. See issue 29253.
[!cgo] stop
[!compiler:gc] stop
cc -c -o pkg/o.syso ext.c
go build main.go

-- ext.c --
// +build ignore

int f() { return 42; }
-- pkg/pkg.go --
package pkg

// extern int f(void);
import "C"

func init() {
	if v := C.f(); v != 42 {
		panic(v)
	}
}
-- main.go --

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test that a PE rsrc section is handled correctly (issue 39658).
//
// rsrc.syso is created using binutils with:
//	{x86_64,i686}-w64-mingw32-windres -i a.rc -o rsrc_$GOARCH.syso -O coff
// where a.rc is a text file with the following content:
//
// resname RCDATA {
//   "Hello Gophers!\0",
//   "This is a test.\0",
// }

package main

//go:build race

package race

import (
	"bytes"
	"os/exec"
	"path/filepath"
	"runtime"
	"testing"
)

func TestIssue37485(t *testing.T) {
	files, err := filepath.Glob("./*.syso")
	if err != nil {
		t.Fatalf("can't find syso files: %s", err)
	}
	for _, f := range files {
		cmd := exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), "tool", "nm", f)
		res, err := cmd.CombinedOutput()
		if err != nil {

# Issue 52863.

# We manually create a .syso and a .a file in package a,
# such that the .syso file only works when linked against the .a file.
# Package a has #cgo LDFLAGS to make this happen.
#
# Package c imports package a, and uses cgo itself.
# The generation of the _cgo_import.go for package c will fail,
# because it won't know that it has to link against a/libb.a
# (because we don't gather the #cgo LDFLAGS from all transitively
# imported packages).