problem compiling glibc 2.26 with gcc 7.1

[Waldemar Brodkorb]

Hi,
Adhemerval Zanella wrote,

> 
> 
> On 02/08/2017 15:45, Waldemar Brodkorb wrote:
> > Hi,
> > 
> > I try to cross-compile latest glibc release 2.26 with binutils 2.28
> > and gcc 7.1 to aarch64, but the compilation fails with this error:
> > ./md-unwind-support.h: In function 'aarch64_fallback_frame_state':
> > ./md-unwind-support.h:58:21: error: field 'uc' has incomplete type
> >      struct ucontext uc;
> >                      ^~
> > 
> > The full log is here:
> > https://debug.openadk.org/glibc/make.log
> > 
> > It fails in the final gcc compilation step.
> > 
> > Anyone have a gcc patch ready?
> > Or do I make a mistake? Glibc 2.25 worked fine for me with the
> > same gcc and binutils versions.
> > I see similar issues with other architectures.
> > 
> > best regards
> >  Waldemar
> > 
> 
> Check wiki release notes [1] and NEWS about this change:
> 
> * The ucontext_t type no longer has the name struct ucontext.  This changes
>   the C++ name mangling for interfaces involving this type.
> 
> You should use ucontext_t instead of struct ucontext.
> 
> [1] https://sourceware.org/glibc/wiki/Release/2.26

I have seen the change. But does it mean gcc 7.1 (latest gcc
release) can not be used with latest glibc release?

best regards
 Waldemar