On Tue, Aug 9, 2016 at 1:38 AM, Seb Binet <seb.bi...@gmail.com> wrote:
>
>
> On Mon, Aug 8, 2016 at 5:12 PM, Ian Lance Taylor <i...@golang.org> wrote:
>>
>> On Sun, Aug 7, 2016 at 7:08 PM, Amit Saha <amitsaha...@gmail.com> wrote:
>> >
>> > From an old thread [1], I learned that CGO_ENABLED=0 will create static
>> > binaries for programs using the net/http package. I still see the same
>> > behavior as of go version go1.6.3 linux/amd64. Does this mean this is
>> > the
>> > only way to get statically linked binaries for programs using net/http?
>>
>> It is a simple way that works. Why do you want another way?
>>
>> The issue is not actually the net/http package, it's the net package.
>> The net package is designed to fall back to the C library for DNS
>> lookups in some cases. Setting CGO_ENABLED=0 disables that fallback,
>> and the net package will use pure Go code for DNS (which it does in
>> most cases anyhow).
>
>
> If I am not mistaken, you can achieve the same with the somewhat clearer
> "netgo" build tag:
>
> $ cat main.go
> package main
>
> import (
> "net"
> "log"
> )
>
> func main() {
> c, err := net.Dial("tcp", "localhost:4000")
> if err != nil {
> log.Fatal(err)
> }
> defer c.Close()
> c.Write([]byte("hello"))
> }
>
> $ go build -tags=netgo -o netgo main.go
> $ go build -o netcgo main.go
>
> $ ldd netcgo
> linux-vdso.so.1 (0x00007ffc8c729000)
> libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f6cb60bd000)
> libc.so.6 => /usr/lib/libc.so.6 (0x00007f6cb5d1f000)
> /lib64/ld-linux-x86-64.so.2 (0x00007f6cb62da000)
>
> $ ldd netgo
> not a dynamic executable
Thank you! That's what I wanted to know, since my approach seemed too "generic".
>
> -s
>
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