Re: Newlib fails to compile on arm64

[Ajay Garg <ajaygargnsit at gmail dot com>]

Thanks Szabolcs, that worked.

Thanks and Regards,
Ajay

On Mon, Jun 18, 2018 at 4:02 PM, Szabolcs Nagy <szabolcs.nagy@arm.com> wrote:
> On 16/06/18 04:38, Ajay Garg wrote:
>>
>> Hi All.
>>
>> I did the following :
>>
>> ##########################################################
>> git clone git://sourceware.org/git/newlib-cygwin.git
>> cd newlib-cygwin/newlib
>> ./configure
>> make
>> ##########################################################
>>
>>
>> However, the compilation fails to complete.
>> Upon seeing the logs somewhat before, errors of the following type are
>> seen :
>>
>> ##########################################################
>> /newlib-cygwin/newlib/libc/include/ssp/ssp.h:47:52: error: expected
>> declaration specifiers or '...' before numeric constant
>>   #define __ssp_bos0(ptr) __builtin_object_size(ptr, 0)
>> ##########################################################
>>
>>
>> What am I missing?
>>
>
> newlib is broken with -D_FORTIFY_SOURCE
>
> stdio.h has macros like:
>
> #define gets(str) \
>     __gets_chk(str, __ssp_bos(str))
>
> and gets.c does not protect the definition against macro expansion:
>
> char *
> gets (char *buf)
> {
> ...
>
> and for some reason ubuntu gcc -O2 turns -D_FORTIFY_SOURCE=2 on.
>
> i think CC='gcc -D_FORTIFY_SOURCE=0' should work.