NOTE: HP WDB cannot be attached to a process that is traced by tools which use ttrace, such as Caliper, adb, and tusc. The debugger displays the following error message on attempting to attach to such a process:

Attaching to process <pid> failed.

Hint: Check if this process is already being traced by another gdb or other trace tools like caliper and tusc.

Hint: Check whether program is on an NFS-mounted file-system.

If so, you will need to mount the file system with the "nointr" option with mount(1) or make a local copy of the program to resolve this problem.

14.4 HP-UX targets

On HP-UX systems, GDB has been configured to support debugging of processes running on the PA-RISC and Itanium architectures. This means that the only possible targets are:

•An executable that has been compiled and linked to run on HP-UX. This includes binaries that have been marked as SHMEM_MAGIC.

•A live HP-UX process, either started by WDB (with the run command) or started outside of WDB and attached to (with the attach command).

•A core file generated by an HP-UX process that previously aborted execution.

GDB on HP-UX has not been configured to support remote debugging, or to support programs running on other platforms.

WDB can only debug C++ programs compiled with HP aC++, the ANSI-compatible C++ compiler.

14.5 Support for Alternate root

HP WDB supports alternate root functionality, which is helpful when you do not want to use the system-installed HP WDB or its components.

The environment variable WDB_ROOT specifies the alternate root for HP WDB. You must specify a structure similar to the default /opt/langtools used for HP WDB. You can use the environment variable GDB_ROOT to specify an alternate root for GDB.

If you specify both WDB_ROOT and GDB_ROOT, the value for GDB_ROOT is ignored.

HP WDB supports these environment variables to override the location of different component of HP WDB.

Defined Variable

/opt/langtools/ GDB_ROOT

$GDB_SERVER

 

bin

 

 

WDB Location

/opt/langtools/ n/a

n/a

GDB location

lib

 

 

WDB_ROOT

$GDB_ROOT/bin

LIBRTC_SERVER

14.4 HP-UX targets 143