If I change it from <sys/varargs.h> to <varargs.h> then gcc reports a more
useful error:
/usr/gcc/4.7/lib/gcc/i386-pc-solaris2.11/4.7.2/include/varargs.h:4:2: error:
#error "GCC no longer implements <varargs.h>."
/usr/gcc/4.7/lib/gcc/i386-pc-solaris2.11/4.7.2/include/varargs.h:5:2: error:
#error "Revise your code to use <stdarg.h>."
Changing the include from <sys/varargs.h> to <stdarg.h> makes it compile without
any errors or warnings.
-alan-
On 01/ 8/13 08:28 AM, Rao Shoaib wrote:
> I am porting a 3rd party driver that compiles when using gcc 3.4.3. I want to
> use the more newer version "gcc (GCC) 4.5.2 " that ships as /usr/bin/gcc.
> However I am not able to resolve the following issue. Any ideas on how to
> resolve this issue. This is due to a change in gcc which eliminated
> __builtin_stdarg_start.
>
> nptbld-x:rshoaib:/tmp] (517)>cat y.c
> #include <sys/types.h>
> #include <strings.h>
> #include <sys/varargs.h>
>
>
> int
> ci_sprintf(char *buf, const char *fmt, ...)
> {
> va_list args;
>
> #ifdef WORKS
> __builtin_va_start(args, 0);
> #else
> va_start(args, fmt);
> #endif
> (void) vsnprintf(buf, 100, fmt, args);
> va_end(args);
>
> return strlen(buf);
> }
>
> main()
> {
> }
>
>
> [nptbld-x:rshoaib:/tmp] (519)>gcc y.c -o yc
> Undefined first referenced
> symbol in file
> __builtin_stdarg_start /var/tmp//ccE.aiTM.o
> ld: fatal: symbol referencing errors. No output written to yc
> collect2: ld returned 1 exit status
>
> The only way I have been able to work this out is by using __builtin_va_start
> instead of va_start. That just seems wrong.
>
> Rao.
> _______________________________________________
> userland-discuss mailing list
> [email protected]
> http://mail.opensolaris.org/mailman/listinfo/userland-discuss
--
-Alan Coopersmith- [email protected]
Oracle Solaris Engineering - http://blogs.oracle.com/alanc
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