Re: checking for Berkley db 4.2 --> 4.3 upgrade

[David Boreham]

Sam Steingold wrote:

> Berkley db changed prototypes for functions that are struct members.
> how do I check for that?
>
> here is what I have been able to come up with so far:
>
> AC_CACHE_CHECK([whether DB->stat() accepts TXNid],ac_cv_db_stat_accept_txn,[
> AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <db.h>],
> [[DB db; db->stat(db,0,NULL);]])],
> ac_cv_db_stat_accept_txn=yes,ac_cv_db_stat_accept_txn=no)])
> if test "$ac_cv_db_stat_accept_txn" = "yes"; then
> AC_DEFINE(HAVE_DB_STAT_ACCEPT_TXN,1,[Define to 1 if DB->stat() accepts TXNid])
> fi
>
> Is this the right way to do the check?
>  
Wouldn't it be easier to simply read the version number ?

It's available either from the header file or directly via a function
from the library.