Cross Reference: /osnet-11/usr/src/lib/libast/common/features/tmlib

set prototyped

_cc_export_dynamic = note{ probe CC.EXPORT.DYNAMIC supported }end run{
    case `{ probe -l C make cc | grep '^CC.EXPORT.DYNAMIC = .'; } 2>/dev/null` in
    '') exit 1 ;;
    esac
}end

tst tzset_environ note{ tzset() bypasses user getenv() }end execute{
    #if _UWIN || !_cc_export_dynamic
    int main()
    {
        return 0;
    }
    #else
    #include <time.h>
    extern char**   environ;
    extern char*    tzname[2];
    #if _STD_
    extern char* getenv(char* s)
    #else
    extern char* getenv(s)
    char*   s;
    #endif
    {
        return "foo0bar";
    }
    int main()
    {
        tzset();
        return tzname[0] && !strcmp(tzname[0], "foo") &&
               tzname[1] && !strcmp(tzname[1], "bar");
    }
    #endif
}end

if ( _tzset_environ ) {
    #define tmlocaltime(p)      _tm_localtime(p)

    extern struct tm*       _tm_localtime(const time_t*);
}
else {
    #define tmlocaltime(p)      localtime(p)
}
endif