Go 源码编译笔记

本文介绍如何编译 Go 源码

1. 环境准备

要编译 Go 源码，首先要准备编译环境
鉴于 Go 目前也是通过 Go 语言编写的（自举），因此准备一个 Go 环境即可
以 Ubuntu 18.04 为例：

# cd /tmp 
# wget https://studygolang.com/dl/golang/go1.13.3.linux-amd64.tar.gz
# tar zxvf go1.13.3.linux-amd64.tar.gz -C /usr/local
# echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile
# source /etc/profile

然后，设置一个 GOPATH 作为工作空间，例如：

# mkdir /home/work
# echo "export GOPATH=/home/work" >> /etc/profile
# source /etc/profile

注意，启用 CGO 时，仍需要安装 C 编译器

# apt install gcc -y

或者，如果不需要 CGO 可以通过设置 CGO_ENABLED=0 关闭该功能

2. 源码克隆及编译

接下来使用 git 克隆源码

# cd $GOPATH
# mkdir -p src/go.googlesource.com
# cd src/go.googlesource.com
# git clone https://github.com/golang/go.git
# cd go/src
# ./all.bash

编译成功的输出类似这样：

Building Go cmd/dist using /opt/go.
Building Go toolchain1 using /opt/go.
Building Go bootstrap cmd/go (go_bootstrap) using Go toolchain1.
Building Go toolchain2 using go_bootstrap and Go toolchain1.
Building Go toolchain3 using go_bootstrap and Go toolchain2.
Building packages and commands for linux/amd64.

##### Testing packages.
ok  	archive/tar	0.727s
ok  	archive/zip	2.549s
ok  	bufio	0.141s
ok  	bytes	0.341s
ok  	compress/bzip2	0.287s
ok  	compress/flate	1.252s
ok  	compress/gzip	0.098s
ok  	compress/lzw	0.054s
ok  	compress/zlib	0.145s
ok  	container/heap	0.047s
ok  	container/list	0.013s
ok  	container/ring	0.041s
ok  	context	1.033s
ok  	crypto	0.015s
ok  	crypto/aes	0.045s
ok  	crypto/cipher	0.044s
ok  	crypto/des	0.043s
ok  	crypto/dsa	0.049s
ok  	crypto/ecdsa	0.414s
ok  	crypto/ed25519	0.114s
ok  	crypto/elliptic	0.038s
ok  	crypto/hmac	0.021s
ok  	crypto/internal/subtle	0.007s
ok  	crypto/md5	0.010s
ok  	crypto/rand	0.038s
ok  	crypto/rc4	0.108s
ok  	crypto/rsa	0.172s
ok  	crypto/sha1	0.050s
ok  	crypto/sha256	0.055s
ok  	crypto/sha512	0.027s
ok  	crypto/subtle	0.019s
ok  	crypto/tls	2.253s
ok  	crypto/x509	1.194s
ok  	database/sql	0.653s
ok  	database/sql/driver	0.025s
ok  	debug/dwarf	0.058s
ok  	debug/elf	0.090s
ok  	debug/gosym	0.030s
ok  	debug/macho	0.014s
ok  	debug/pe	0.046s
ok  	debug/plan9obj	0.029s
ok  	encoding/ascii85	0.041s
ok  	encoding/asn1	0.011s
ok  	encoding/base32	0.042s
ok  	encoding/base64	0.033s
ok  	encoding/binary	0.016s
ok  	encoding/csv	0.065s
ok  	encoding/gob	0.109s
ok  	encoding/hex	0.033s
ok  	encoding/json	0.172s
ok  	encoding/pem	0.028s
ok  	encoding/xml	0.063s
ok  	errors	0.015s
ok  	expvar	0.021s
ok  	flag	0.033s
ok  	fmt	0.170s
ok  	go/ast	0.054s
ok  	go/build	0.427s
ok  	go/constant	0.027s
ok  	go/doc	0.238s
ok  	go/format	0.043s
ok  	go/importer	0.398s
ok  	go/internal/gccgoimporter	0.044s
ok  	go/internal/gcimporter	0.810s
ok  	go/internal/srcimporter	2.168s
ok  	go/parser	0.044s
ok  	go/printer	0.684s
ok  	go/scanner	0.098s
ok  	go/token	0.067s
ok  	go/types	3.857s
ok  	hash	0.065s
ok  	hash/adler32	0.076s
ok  	hash/crc32	0.032s
ok  	hash/crc64	0.021s
ok  	hash/fnv	0.013s
ok  	html	0.055s
ok  	html/template	0.197s
ok  	image	0.513s
ok  	image/color	0.084s
ok  	image/draw	0.428s
ok  	image/gif	1.931s
ok  	image/jpeg	1.128s
ok  	image/png	0.143s
ok  	index/suffixarray	0.541s
ok  	internal/cpu	0.206s
ok  	internal/fmtsort	0.050s
ok  	internal/oserror	0.018s
ok  	internal/poll	0.323s
ok  	internal/reflectlite	0.039s
ok  	internal/singleflight	0.027s
ok  	internal/trace	0.103s
ok  	internal/xcoff	0.062s
ok  	io	0.066s
ok  	io/ioutil	0.076s
ok  	log	0.018s
ok  	log/syslog	1.317s
ok  	math	0.044s
ok  	math/big	0.925s
ok  	math/bits	0.007s
ok  	math/cmplx	0.009s
ok  	math/rand	0.238s
ok  	mime	0.055s
ok  	mime/multipart	0.361s
ok  	mime/quotedprintable	0.043s
ok  	net	7.583s
ok  	net/http	5.935s
ok  	net/http/cgi	1.185s
ok  	net/http/cookiejar	0.042s
ok  	net/http/fcgi	0.051s
ok  	net/http/httptest	0.116s
ok  	net/http/httptrace	0.012s
ok  	net/http/httputil	0.140s
ok  	net/http/internal	0.094s
ok  	net/http/pprof	2.032s
ok  	net/internal/socktest	0.007s
ok  	net/mail	0.026s
ok  	net/rpc	0.070s
ok  	net/rpc/jsonrpc	0.076s
ok  	net/smtp	0.084s
ok  	net/textproto	0.009s
ok  	net/url	0.069s
ok  	os	0.945s
ok  	os/exec	0.768s
ok  	os/signal	5.410s
ok  	os/user	0.044s
ok  	path	0.008s
ok  	path/filepath	0.204s
ok  	plugin	0.051s
ok  	reflect	0.435s
ok  	regexp	0.213s
ok  	regexp/syntax	1.253s
ok  	runtime	104.836s
ok  	runtime/debug	0.087s
ok  	runtime/internal/atomic	0.031s
ok  	runtime/internal/math	0.024s
ok  	runtime/internal/sys	0.015s
ok  	runtime/pprof	11.936s
ok  	runtime/pprof/internal/profile	0.057s
ok  	runtime/trace	1.521s
ok  	sort	0.157s
ok  	strconv	0.864s
ok  	strings	0.309s
ok  	sync	0.708s
ok  	sync/atomic	0.067s
ok  	syscall	5.986s
ok  	testing	0.202s
ok  	testing/quick	0.091s
ok  	text/scanner	0.020s
ok  	text/tabwriter	0.029s
ok  	text/template	0.356s
ok  	text/template/parse	0.027s
ok  	time	3.423s
ok  	unicode	0.034s
ok  	unicode/utf16	0.037s
ok  	unicode/utf8	0.056s
ok  	cmd/addr2line	8.449s
ok  	cmd/api	0.166s
ok  	cmd/asm/internal/asm	2.906s
ok  	cmd/asm/internal/lex	0.034s
ok  	cmd/compile	0.029s
ok  	cmd/compile/internal/gc	29.002s
ok  	cmd/compile/internal/ssa	1.090s
ok  	cmd/compile/internal/syntax	0.066s
ok  	cmd/compile/internal/test	0.016s [no tests to run]
ok  	cmd/compile/internal/types	0.029s
ok  	cmd/cover	8.509s
ok  	cmd/doc	0.182s
ok  	cmd/fix	0.062s
ok  	cmd/go	135.530s
ok  	cmd/go/internal/auth	0.024s
ok  	cmd/go/internal/cache	1.126s
ok  	cmd/go/internal/dirhash	0.039s
ok  	cmd/go/internal/generate	0.027s
ok  	cmd/go/internal/get	0.041s
ok  	cmd/go/internal/imports	0.066s
ok  	cmd/go/internal/load	0.066s
ok  	cmd/go/internal/lockedfile	0.026s
ok  	cmd/go/internal/lockedfile/internal/filelock	0.073s
ok  	cmd/go/internal/modconv	0.049s
ok  	cmd/go/internal/modfetch	0.118s
ok  	cmd/go/internal/modfetch/codehost	0.033s
ok  	cmd/go/internal/modfile	0.012s
ok  	cmd/go/internal/modload	0.031s
ok  	cmd/go/internal/module	0.022s
ok  	cmd/go/internal/mvs	0.009s
ok  	cmd/go/internal/note	0.063s
ok  	cmd/go/internal/par	0.048s
ok  	cmd/go/internal/renameio	0.191s
ok  	cmd/go/internal/search	0.014s
ok  	cmd/go/internal/semver	0.169s
ok  	cmd/go/internal/sumweb	0.050s
ok  	cmd/go/internal/tlog	2.338s
ok  	cmd/go/internal/txtar	0.014s
ok  	cmd/go/internal/web	0.057s
ok  	cmd/go/internal/work	0.056s
ok  	cmd/gofmt	0.165s
ok  	cmd/internal/buildid	0.645s
ok  	cmd/internal/dwarf	0.017s
ok  	cmd/internal/edit	0.012s
ok  	cmd/internal/goobj	1.685s
ok  	cmd/internal/obj	0.026s
ok  	cmd/internal/obj/arm64	0.088s
ok  	cmd/internal/obj/x86	0.803s
ok  	cmd/internal/objabi	0.004s
ok  	cmd/internal/src	0.018s
ok  	cmd/internal/test2json	0.378s
ok  	cmd/link	19.763s
ok  	cmd/link/internal/ld	8.869s
ok  	cmd/link/internal/sym	0.037s
ok  	cmd/nm	11.694s
ok  	cmd/objdump	5.120s
ok  	cmd/pack	3.999s
ok  	cmd/trace	0.458s
ok  	cmd/vet	7.637s

##### os/user with tag osusergo
ok  	os/user	0.007s

##### GOMAXPROCS=2 runtime -cpu=1,2,4 -quick
ok  	runtime	26.612s

##### cmd/go terminal test
PASS
ok  	cmd/go/testdata/testterminal18153	0.003s

##### Testing without libgcc.
ok  	crypto/x509	1.079s
ok  	net	0.057s
ok  	os/user	0.044s

##### internal linking of -buildmode=pie
ok  	reflect	3.032s
ok  	os/user	1.147s

##### sync -cpu=10
ok  	sync	1.074s

##### Testing race detector
ok  	runtime/race	36.131s
ok  	flag	1.117s
ok  	net	1.193s
ok  	os	1.403s
ok  	os/exec	3.170s
ok  	encoding/gob	1.073s
ok  	flag	1.136s
ok  	os/exec	3.345s

##### ../misc/cgo/stdio
PASS

##### ../misc/cgo/life
PASS

##### ../misc/cgo/test
PASS
ok  	misc/cgo/test	14.151s
PASS
ok  	misc/cgo/test	14.085s
PASS
ok  	misc/cgo/test	14.387s
PASS
ok  	misc/cgo/testtls	0.031s
PASS
ok  	misc/cgo/testtls	0.014s
PASS
ok  	misc/cgo/testtls	0.043s
PASS
ok  	misc/cgo/nocgo	0.008s
PASS
ok  	misc/cgo/nocgo	0.024s
PASS
ok  	misc/cgo/nocgo	0.017s
PASS
ok  	misc/cgo/test	12.304s
PASS
ok  	misc/cgo/test	13.081s
PASS
ok  	misc/cgo/test	11.226s
PASS
ok  	misc/cgo/testtls	0.020s
PASS
ok  	misc/cgo/nocgo	0.034s

##### ../misc/cgo/testgodefs

##### ../misc/cgo/testso
ok  	misc/cgo/testso	2.325s

##### ../misc/cgo/testsovar
ok  	misc/cgo/testsovar	2.190s

##### ../misc/cgo/testcarchive
SKIP - short mode and $GO_BUILDER_NAME not set

##### ../misc/cgo/testcshared
SKIP - short mode and $GO_BUILDER_NAME not set

##### ../misc/cgo/testshared
ok  	misc/cgo/testshared	56.327s

##### ../misc/cgo/testplugin
ok  	misc/cgo/testplugin	0.003s

##### ../misc/cgo/testasan

##### ../misc/cgo/testsanitizers
PASS

##### ../misc/cgo/errors
PASS

##### ../misc/cgo/testsigfwd

##### ../test/bench/go1

##### ../test

##### API check
+pkg debug/elf, type Symbol struct, Library string
+pkg debug/elf, type Symbol struct, Version string

ALL TESTS PASSED
---
Installed Go for linux/amd64 in /home/work/src/go.googlesource.com/go
Installed commands in /home/work/src/go.googlesource.com/go/bin
*** You need to add /home/work/src/go.googlesource.com/go/bin to your PATH.

编译出的二进制文件位于 $GOPATH/src/go.googlesource.com/go/bin 路径下