Hello,
On Sat, 1 Oct 2022, Liam Wilson wrote:
Note __attribute__((constructor)) has been stripped off bar and not foo.
Yep, that's the glibc headers defining __attribute__ away ...
Digging a bit further, it seems to be due to sys/cdefs.h (which is
included by string.h and many other standard headers). In sys/cdefs.h
I found this:
... as you found out.
Is there a work around for this issue? I can define __GNUC__ but
presumably that may cause other issues?
The work-around is to use the other form of attribute: __attribute(foo)
(note the missing suffix of '__'). That's still in the implementation
namespace and not defined away by glibc.
The other work-around would be to '#undef __attribute__' after all glibc
headers are included. As <sys/cdefs.h> (on glibc!) also has header guards
you might also get away with this, as first directives in the .c files:
#include <sys/cdefs.h>
#undef __attribute__
as the following includes, even if they include <sys/cdefs.h> again, won't
parse its content again. As TCC ignores unknown attributes that should
work fine for the decls in the glibc headers as well.
Ciao,
Michael.
_______________________________________________
Tinycc-devel mailing list
Tinycc-devel@nongnu.org
https://lists.nongnu.org/mailman/listinfo/tinycc-devel
