[PATCH V2] libc: deal with aux vect inside __uClibc_main only if !SHARED

[Mike Frysinger]

On Friday 14 December 2012 05:40:05 Filippo ARCIDIACONO wrote:
> --- a/libc/misc/elf/dl-support.c
> +++ b/libc/misc/elf/dl-support.c
> @@ -28,6 +28,7 @@ void (*_dl_init_static_tls) (struct link_map *) =
> &_dl_nothread_init_static_tls;
> 
>  ElfW(Phdr) *_dl_phdr;
>  size_t _dl_phnum;
> +size_t _dl_pagesize;
> 
>  void internal_function _dl_aux_init (ElfW(auxv_t) *av);
>  void internal_function _dl_aux_init (ElfW(auxv_t) *av)
> @@ -37,6 +38,9 @@ void internal_function _dl_aux_init (ElfW(auxv_t) *av)
> 
>     /* Get the number of program headers from the aux vect */
>     _dl_phnum = (size_t) av[AT_PHNUM].a_un.a_val;
> +
> +   /* Get the pagesize from the aux vect */
> +   _dl_pagesize = (av[AT_PAGESZ].a_un.a_val) ? (size_t)
> av[AT_PAGESZ].a_un.a_val : PAGE_SIZE;

you cannot use PAGE_SIZE.  pretty much every arch has long ago removed that 
from their kernel headers exported to userspace.  and indeed, this breaks 
building for at least x86:

libc/misc/elf/dl-support.c: In function '_dl_aux_init':
libc/misc/elf/dl-support.c:43:68: error: 'PAGE_SIZE' undeclared (first use in 
this function)
    _dl_pagesize = (av[AT_PAGESZ].a_un.a_val) ? (size_t) 
av[AT_PAGESZ].a_un.a_val : PAGE_SIZE;
                                                                    ^
libc/misc/elf/dl-support.c:43:68: note: each undeclared identifier is reported 
only once for each function it appears in
make: *** [libc/misc/elf/dl-support.os] Error 1
-mike
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