Re: AC_CHECK_SIZEOF for members

[Paul Eggert]

Sam Steingold <address@hidden> writes:

> it appears that AC_CHECK_SIZEOF works only with types, not members.

Yes, that's correct.  You'd need to write a variant to do what you want.

Wouldn't it be easier to do this within C?  E.g.:

   struct utmpx u;
   enum {
     GLIBC_2_3_2_STRUCT_UTMPX_BUG =
       (sizeof u.ut_tv != sizeof (struct timeval))
   };
   if (GLIBC_2_3_2_STRUCT_UTMPX_BUG) ...