Installation guide

8.4 The -oldc C Compiler
The official C compiler for Tru64 UNIX is DEC C. The previous compiler,
implemented with -oldc, is no longer distributed in the default subset and
will not be installed during a default system installation.
The -oldc compiler is still available in this version by installing the
CMPDEVENH subset. Any problems reported with -oldc will be addressed
in DEC C for Tru64 UNIX rather than in the -oldc compiler.
8.5 The dbx Debugger
The dbx symbolic debugger will be retired in a future release of Tru64
UNIX. The dbx debugger will be replaced by the ladebug debugger,
which is a superset of the dbx functionality. The ladebug debugger is
command line compatible with dbx and also supports a graphical user
interface.
Compaq recommends that you begin using the ladebug debugger now and
report any problems. This will provide a higher quality replacement when
dbx is finally retired.
8.6 DEC C Compiler Default Change from -std0 to -std
The default language mode for the Tru64 UNIX C compiler will change from
-std0 to -std. This will occur in a future release.
When the change occurs, it will be possible to revert back to -std0 by
specifying -std0 on the compilation command line, by adding -std0 to
the /usr/ccs/lib/cmplrs/cc/comp.config file, or by using an
environment variable.
8.7 Change in struct utmp, struct utmpx, and struct
lastlog
To provide compliance with several UNIX and Internet standards, the
struct utmp, struct utmpx, and struct lastlog structures will
be changed in the next major release (Version 5.0) of Tru64 UNIX. These
changes will affect the /usr/include/utmp.h,
/usr/include/utmpx.h, and /usr/include/lastlog.h files:
• The time field in struct utmp will change from a time_t structure
to a struct __ut_timeval structure (to be consistent with
/usr/include/utmpx.h).
• The ut_host field size (in struct utmp and struct utmpx) will
be increased to comply with relevant Internet RFCs.
8–4 Features and Interfaces Scheduled for Retirement