[RFC PATCH] Don't install libio.h or _G_config.h.

[Florian Weimer]

On 08/28/2017 04:06 PM, Zack Weinberg wrote:
> It passes the testsuite on x86_64-linux, but it needs a great deal of
> additional testing; in particular I'm almost certain I broke the
> support for old-format (GLIBC_2.0) struct _IO_FILE, which is
> configured out on this target.  Testing this properly would require
> someone to get their hands on_really_  old binaries, compiled against
> glibc 2.0, possibly statically-linked-but-using-NSS.  Unfortunately,
> libc.so cannot be expected to be binary identical.

elf/tst-audit1 and others break on i386.  Usually, this is due to 
dlmopen/stdio sync issues, but in this case, it might be caused by a 
_IO_stdin_used mismatch.  For some reason, I don't have debuginfo for 
the inner libc, so this is rather difficult to diagnose.  I won't be 
able to fix this before the freeze, I'm afraid.

I think we should unify the libio locking first across glibc (aka get 
rid of _IO_MTSAFE_IO).  This will reduce the size of the patch a bit.

Thanks,
Florian