fix build scripts, port go-mysql-org/go-mysql#349 to remove cgo dep

build.sh

@@ -73,4 +73,7 @@ main() {
   (cd $buildpath && shasum -a256 gh-ost* 2>/dev/null)
 }
 
+. script/bootstrap
+cd .gopath/src/github.com/github/gh-ost
+
 main "$@"

script/bootstrap

@@ -10,7 +10,6 @@ set -e
 # Since we want to be able to build this outside of GOPATH, we set it
 # up so it points back to us and go is none the wiser
 
-set -x
 rm -rf .gopath
 mkdir -p .gopath/src/github.com/github
 ln -s "$PWD" .gopath/src/github.com/github/gh-ost

script/ensure-go-installed

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 PREFERRED_GO_VERSION=go1.16.4
-SUPPORTED_GO_VERSIONS='go1.1[56]'
+SUPPORTED_GO_VERSIONS='go1.1[567]'
 
 GO_PKG_DARWIN=${PREFERRED_GO_VERSION}.darwin-amd64.pkg
 GO_PKG_DARWIN_SHA=0f215de06019a054a3da46a0722989986c956d719c7a0a8fc38a5f3c216d6f6b
@@ -35,7 +35,7 @@ if [ -z "$(which go)" ] || [ -z "$(go version | grep "$SUPPORTED_GO_VERSIONS")"
     curl -L -O https://dl.google.com/go/$GO_PKG_DARWIN
     shasum -a256 $GO_PKG_DARWIN | grep $GO_PKG_DARWIN_SHA
     xar -xf $GO_PKG_DARWIN
-    cpio -i < com.googlecode.go.pkg/Payload
+    cpio -i < org.golang.go.pkg/Payload
   else
     curl -L -O https://dl.google.com/go/$GO_PKG_LINUX
     shasum -a256 $GO_PKG_LINUX | grep $GO_PKG_LINUX_SHA

vendor/github.com/siddontang/go-mysql/client/resp.go

@@ -1,6 +1,5 @@
 package client
 
-import "C"
 import (
 	"encoding/binary"
 

vendor/github.com/siddontang/go-mysql/packet/conn.go

@@ -1,6 +1,5 @@
 package packet
 
-import "C"
 import (
 	"bytes"
 	"io"
@@ -127,7 +126,7 @@ func (c *Conn) WritePacket(data []byte) error {
 func (c *Conn) WriteClearAuthPacket(password string) error {
 	// Calculate the packet length and add a tailing 0
 	pktLen := len(password) + 1
-	data := make([]byte, 4 + pktLen)
+	data := make([]byte, 4+pktLen)
 
 	// Add the clear password [null terminated string]
 	copy(data[4:], password)
@@ -140,7 +139,7 @@ func (c *Conn) WriteClearAuthPacket(password string) error {
 // http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse
 func (c *Conn) WritePublicKeyAuthPacket(password string, cipher []byte) error {
 	// request public key
-	data := make([]byte, 4 + 1)
+	data := make([]byte, 4+1)
 	data[4] = 2 // cachingSha2PasswordRequestPublicKey
 	c.WritePacket(data)
 
@@ -163,7 +162,7 @@ func (c *Conn) WritePublicKeyAuthPacket(password string, cipher []byte) error {
 	}
 	sha1v := sha1.New()
 	enc, _ := rsa.EncryptOAEP(sha1v, rand.Reader, pub.(*rsa.PublicKey), plain, nil)
-	data = make([]byte, 4 + len(enc))
+	data = make([]byte, 4+len(enc))
 	copy(data[4:], enc)
 	return c.WritePacket(data)
 }