Is this bug in cgo or in clang
for gcc runs well ?
CC=clang CGO_ENABLE=1 go build -v void.go -->fail
command-line-arguments
# command-line-arguments
./void.go:47:10: error: field has incomplete type 'GLvoid' (aka 'void')
CC=gcc CGO_ENABLE=1 go build -o void -v void.go -->ok
command-line-arguments
在 2017年4月26日星期三 UTC+8下午4:37:38，hui zhang写道：
>
> this code runs well on ubuntu gcc --version
> gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005
> but build fail on mac
>
> gcc --version
>
> Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr
> --with-gxx-include-dir=/usr/include/c++/4.2.1
>
> Apple LLVM version 8.0.0 (clang-800.0.42.1)
>
> Target: x86_64-apple-darwin15.5.0
>
> Thread model: posix
>
> any workaround ?
>
>
> 在 2017年4月26日星期三 UTC+8下午3:59:15，hui zhang写道：
>>
>> I simply the case as below , how to fix it?
>>
>> package main
>>
>> /*
>> #include <stdlib.h>
>> #include <stdio.h>
>> typedef void GLvoid;
>> GLvoid Foo() {
>> printf("foo");
>> }
>> */
>> import "C"
>>
>> func main() {
>> C.Foo()
>> }
>>
>> go build void.go
>>
>> cgo-gcc-prolog:34:10: error: field has incomplete type 'GLvoid' (aka
>> 'void')
>> 在 2017年4月26日星期三 UTC+8下午3:20:14，hui zhang写道：
>>>
>>> Check code below
>>> go call c opengl/opengles code, typedef void GLvoid
>>>
>>> func GenVertexArrays(n int32, arrays *uint32) {
>>> //C.glGenVertexArrays((C.GLsizei)(n),
>>> (*C.GLuint)(unsafe.Pointer(arrays))) --> ok on darwin amd64
>>> C.glGenVertexArraysOES((C.GLsizei)(n),
>>> (*C.GLuint)(unsafe.Pointer(arrays))) --> fail on darwin arm
>>> }
>>>
>>> Error Message
>>>
>>> cgo-gcc-prolog:36:10: error: field has incomplete type 'GLvoid' (aka
>>> 'void')
>>> For the GLvoid(aka void) can not be understood by cgo
>>>
>>> function decalred
>>> void *glGenVertexArrays*(GLsizei n, GLuint *arrays); -->on darwin amd64
>>> opengl
>>>
>>> GLvoid glGenVertexArraysOES(GLsizei n, GLuint *arrays) -->on darwin arm
>>> opengles
>>>
>>>
>>>
>>>
>>>
>>>
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