go 1.10：无法在共享库中隐式包含运行时/cgo

Question

我正在尝试执行go build -buildmode=shared -linkshared test，但收到错误：go 1.10: cannot implicitly include runtime/cgo in a shared library我该包中只有一个文件库.gopackage testimport "fmt"func Hello() {    fmt.Println("Hi")}我在运行go1.10.4 linux/amd64 的Linux 机器上

Answer 1

这个过程对我有用：

$ docker run -it golang /bin/sh

# cd src

# mkdir test

# cat << EOF > test/lib.go

> package test

import "fmt"

func Hello() {

    fmt.Println("Hi")

}> > > > 

> EOF

# cat test/lib.go

package test

import "fmt"

func Hello() {

    fmt.Println("Hi")

}

# go install -buildmode=shared -linkshared std

# ldd /usr/local/go/pkg/linux_amd64_dynlink/libstd.so

    linux-vdso.so.1 (0x00007fff4093d000)

    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3454de5000)

    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f3454dc4000)

    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3454c03000)

    /lib64/ld-linux-x86-64.so.2 (0x00007f3457514000)

# go install -buildmode=shared -linkshared test

# ldd /go/pkg/linux_amd64_dynlink/libtest.so

    linux-vdso.so.1 (0x00007ffddbbeb000)

    libstd.so => /usr/local/go/pkg/linux_amd64_dynlink/libstd.so (0x00007f82bc8cf000)

    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f82bc70a000)

    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f82bc705000)

    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f82bc6e4000)

    /lib64/ld-linux-x86-64.so.2 (0x00007f82bf0fc000)

# 

Answer 2

问题是我没有cgo在任何地方导入。因此，这意味着不会导出任何函数，这意味着没有任何内容可以构建到库中。