On Tue, Jan 21, 2020 at 5:24 AM Graham Nicholls
<nicholls.gra...@gmail.com> wrote:
>
> I have the following code:
>
> 3 /*
> 4 selinux.go - return the sestatus
> 5
> 6
> 7 The lines below are preamble to the import of "C" -
> 8 they should be left untouched
> 9 */
> 10
> 11 // //cgo linux CFLAGS: -Iinclude -I.
> 12 // #cgo pkg-config: libselinux
> 13 // #include <selinux/selinux.h>
> 14 // #include <selinux/label.h>
> 15 // #include <stdlib.h>
> 16 // #include <stdio.h>
> 17 // #include <sys/types.h>
> 18 // #include <sys/stat.h>
> 19
> 20 import "C"
> 21 import (
> 22 "fmt"
> 23 "net/http"
> 24 )
> 25
> 26 const (
> 27 Enforcing = 1
> 28 Permissive = 0
> 29 Disabled = -1
> 30 )
> 31
> 32 func init() {
> 33 if len(testFunctionsMap) == 0 {
> 34 testFunctionsMap = make(funcPtrMap)
> 35 }
> 36 testFunctionsMap["selinux"] = SELinuxStatus
> 37 initCtr++
> 38 }
>
> The program also has several other files all in package main. The init
> functions in those files do get called; this init function doesn't -
> "selinux" never gets added to the testFunctionsMap.
>
> This used to work - I think on 1.9 was the previous version. I've looked at
> the release notes, and it seems that work has been done on cgo - but I can't
> see anything which might explain this behaviour.
It's odd that you have a blank line on line 19. That makes all those
directives ineffective. The cgo comment must immediately precede the
import "C", with no blank lines. Is this really the exact file that
you are compiling?
The other thing to consider is that if cgo is not enabled, then the go
tool will silently not build any Go files that import "C". And cgo is
not enabled by default when cross-compiling. Try setting
CGO_ENABLED=1 in the environment.
Ian
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