How does sun cc support GNU C?

Question

I fail to build theora on solaris_x86, it seems some it does not support GNU C style.
$cc -V
cc: Sun C 5.8 Patch 121016-02 2006/03/31
usage: cc [ options] files. Use 'cc -flags' for details
How can I deal with this situation,
- Waiting for new complier
- Write patch for theora(Do not know how to, any idea?)
Sample code are:
static const __attribute__ ((aligned(8),used)) ogg_int64_t V128 = 0x0080008000800080LL;
__asm__ __volatile__ (
" .balign 16 \n\t"
" pxor %%mm7, %%mm7 \n\t"
".rept 8 \n\t"
" movq (%0), %%mm0 \n\t" /* mm0 = FiltPtr */
" movq (%1), %%mm1 \n\t" /* mm1 = ReconPtr */
" movq %%mm0, %%mm2 \n\t" /* dup to prepare for up conversion */
" movq %%mm1, %%mm3 \n\t" /* dup to prepare for up conversion */
/* convert from UINT8 to INT16 */
" punpcklbw %%mm7, %%mm0 \n\t" /* mm0 = INT16(FiltPtr) */
" punpcklbw %%mm7, %%mm1 \n\t" /* mm1 = INT16(ReconPtr) */
" punpckhbw %%mm7, %%mm2 \n\t" /* mm2 = INT16(FiltPtr) */
" punpckhbw %%mm7, %%mm3 \n\t" /* mm3 = INT16(ReconPtr) */
/* start calculation */
" psubw %%mm1, %%mm0 \n\t" /* mm0 = FiltPtr - ReconPtr */
" psubw %%mm3, %%mm2 \n\t" /* mm2 = FiltPtr - ReconPtr */
" movq %%mm0, (%2) \n\t" /* write answer out */
" movq %%mm2, 8(%2) \n\t" /* write answer out */
/* Increment pointers */
" add $16, %2 \n\t"
" add %3, %0 \n\t"
" add %4, %1 \n\t"
".endr \n\t"
: "+r" (FiltPtr),
"+r" (ReconPtr),
"+r" (DctInputPtr)
: "m" (PixelsPerLine),
"m" (ReconPixelsPerLine)
: "memory"
);

Answer 1

For
static const __attribute__ ((aligned(8),used)) ogg_int64_t V128 = 0x0080008000800080LL;
Put
#if !defined(__GNUC__)
#define __attribute__(X) /* nothing */
#endif /* __GNUC__)
For the assembler, you'll either have to extract it to a separate assmbly file and assemble it with as (or gas), or else port it to C.
Paul