Re: [Tinycc-devel] [FreeBSD support] __aligned(n) + __pure issues

[Christian JULLIEN]

The problem is perhaps different:
./tcc -B. -Iinclude -I. -run tests/tcctest.c
Compiles and works well. This one ic compiled with GCC

I get this issue only with:
../tcc -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -run tcctest.c > test.out3

If understand well, when tcc is compiled by itself.

It I add:
    tcc_define_symbol(s, "__aligned(n)", "__attribute__((aligned(n)))");                      
The issue is different, it compiles fine this time but I get:
------------ test3 ------------
../tcc -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -DTCC_TARGET_I386 -DONE_SOURCE -run ../tcc.c -B.. -I../include -I.. -I.. -run tcctest.c > test.out3
tcc: error: undefined symbol 'memmove'
tcc: error: undefined symbol 'memcpy'
tcc: error: undefined symbol 'strlen'
tcc: error: undefined symbol 'memset'
tcc: error: undefined symbol 'memcmp'
....

i.e. no stdlib function is found.


----- message d'origine -----
> De : "grischka" <address@hidden>
> date lun. 10/10/2016 12:35 (GMT +02:00)
> À : "Christian JULLIEN" <address@hidden>, "address@hidden" <address@hidden>
> Objet : Re: [Tinycc-devel] [FreeBSD support] __aligned(n) + __pure issues
>
> Christian JULLIEN wrote:
> > Thank you for your reply.
> > This is of course something I tried.
> > IMHO, because FreeBSD standard headers are known to use __aligned(x) 
> > and __pure, tcc should define them by default (at least for FreeFBSD) 
> > otherwise everybody will need to define those macros just to include 
> > standard header. 
> > 
> > Wdyt?
>
> I'd think
>
> 1) try to find out why it works for gcc but doesn't for tcc
>
> 2) then you could for example put stuff into tcc's stddef.h
>     (assuming that the system headers will read it):
>
>      #ifdef __FreeBSD__
>      ... whatever
>      #endif
>
> Btw, please note that I don't (usually) commit other peoples'
> patches the less ones that I can't test ;)
>
> -- grischka