Re: [Qemu-devel] CMSG_SPACE() causing compile time error on Mac OS X

[Paolo Bonzini <pbonzini@redhat.com>]

On 17/01/2016 23:23, Programmingkid wrote:
> When compiling under Xcode, the program does compile and run. It prints "GCC version = 4.2.1".
> 
> When I try to compile it under gcc 4.2.1 using just the terminal, I see this error message:
> main.cpp: In function ‘int main(int, char* const*)’:
> main.cpp:6: error: size of array ‘control’ is not an integral constant-expression
> 
> Why there is a difference between XCode and the terminal I have no idea. 
> 
> When compiling it under gcc 4.9.2, it compiles and runs without problem. 
> 
> I have set the configure option for cc to gcc-4.9 with this "-cc=gcc-4.9". So the error message makes me believe that the wrong compiler is being used. 
> 
> This is the full configure command options I used:
> ./configure --cxx=gcc-4.9 --cc=gcc-4.9 --objcc=gcc-4.9 --disable-gtk --disable-sdl --target-list=ppc-softmmu,i386-softmmu
> 
> Any insight as to what could be wrong? 

What's the definition of the CMSG_SPACE macro under OS X?

Paolo