Golang go build
命令行使用：
1. go build 编译（apiserver.exe amd64/windows7 or apiserver amd64/linux）
go build -x 编译时列出所有编译时的指令（先编译package 最后 link）
2. go build -race 竞态检查
go build -gcflags "-xxx -xxx"
比如 go build -gcflags="-N -l" 禁用编译器优化和内联优化
比如
把Go程序变小的办法是： go build -ldflags "-s -w" (go install类似)
-s去掉符号表（然后panic时候的stack trace就没有任何文件名/行号信息了，
这个等价于普通C/C++程序被strip的效果），
-w去掉DWARF调试信息，得到的程序就不能用gdb调试了。
其他一些gcflags参数如下：
usage: compile [options] file.go...
-% debug non-static initializers
-+ compiling runtime
-A for bootstrapping, allow 'any' type
-B disable bounds checking
-D path
set relative path for local imports
-E debug symbol export
-I directory
add directory to import search path
-K debug missing line numbers
-M debug move generation
-N disable optimizations
-P debug peephole optimizer
-R debug register optimizer
-S print assembly listing
-V print compiler version
-W debug parse tree after type checking
-asmhdr file
write assembly header to file
-buildid id
record id as the build id in the export metadata
-complete
compiling complete package (no C or assembly)
-cpuprofile file
write cpu profile to file
-d list
print debug information about items in list
-dynlink
support references to Go symbols defined in other shared libr
-e no limit on number of errors reported
-f debug stack frames
-g debug code generation
-h halt on error
-i debug line number stack
-importmap definition
add definition of the form source=actual to import map
-installsuffix suffix
set pkg directory suffix
-j debug runtime-initialized variables
-l disable inlining
-largemodel
generate code that assumes a large memory model
-linkobj file
write linker-specific object to file
-live
debug liveness analysis
-m print optimization decisions
-memprofile file
write memory profile to file
-memprofilerate rate
set runtime.MemProfileRate to rate
-msan
build code compatible with C/C++ memory sanitizer
-newexport
use new export format (default true)
-nolocalimports
reject local (relative) imports
-o file
write output to file
-p path
set expected package import path
-pack
write package file instead of object file
-r debug generated wrappers
-race
enable race detector
-s warn about composite literals that can be simplified
-shared
generate code that can be linked into a shared library
-ssa
use SSA backend to generate code (default true)
-trimpath prefix
remove prefix from recorded source file paths
-u reject unsafe code
-v increase debug verbosity
-w debug type checking
-wb
enable write barrier (default true)
-x debug lexer
参考文献：
Go的口头禅“不要使用共享数据来通信；使用通信来共享数据”
文档 godoc -http=:6060
性能调试
http://blog.cyeam.com/golang/2016/08/18/apatternforoptimizinggo
Go语言圣经中文版
文档搜索
go 后台任务管理器
fing 探测局域网里面的设备
竞态检查参考：
竞态的实例
http://localhost:6060/doc/articles/race_detector.html
package main
import (
"fmt"
)
func main() {
c := make(chan bool)
m := make(map[string]string)
go func() {
m["1"] = "a" // First conflicting access.
c <- true
}()
m["2"] = "b" // Second conflicting access.
<-c
for k, v := range m {
fmt.Println(k, v)
}
}