hello_world_c

[angelo]

I have come upon some problems with the hello_world dated
By making hello_world from the hello_world_c directory I get the
following error massage.

In file included from test.c:35:
/opt/rtems/pc586/lib/include/confdefs.h:1005: #error "CONFIGURATION
ERROR: No tasks or threads configured!!
#endif

/*
 *  Make sure at least one of the initialization task/thread
 *  tables was defined.
 */

#if !defined(CONFIGURE_RTEMS_INIT_TASKS_TABLE) &&
!defined(CONFIGURE_POSIX_INIT_THREAD_TABLE) &&
!defined(CONFIGURE_ITRON_INIT_TASK_TABLE)
#error "CONFIGURATION ERROR: No initialization tasks or threads
configured!!
make: *** [o-optimize/test.o] Error 1

Upon looking at test.c (in hello_world_c) we can see that
CONFIGURE_RTEMS_INIT_TASKS_TABLE is actually defined, so I investigated
the file /opt/rtems/pc586/lib/include/confdefs.h and we see the
following:

#if (CONFIGURE_MAXIMUM_TASKS == 0) && \
    (CONFIGURE_MAXIMUM_POSIX_THREADS == 0) && \
    (CONFIGURE_MAXIMUM_ADA_TASKS == 0) &&  \
    (CONFIGURE_MAXIMUM_ITRON_TASKS == 0)
#error "CONFIGURATION ERROR: No tasks or threads configured!!
#endif

/*
 *  Make sure at least one of the initialization task/thread
 *  tables was defined.
 */

#if !defined(CONFIGURE_RTEMS_INIT_TASKS_TABLE) && \
    !defined(CONFIGURE_POSIX_INIT_THREAD_TABLE) && \
    !defined(CONFIGURE_ITRON_INIT_TASK_TABLE)
#error "CONFIGURATION ERROR: No initialization tasks or threads
configured!!
#endif

The error has been caused by the following conditional statement:
#if (CONFIGURE_MAXIMUM_TASKS == 0) && \
    (CONFIGURE_MAXIMUM_POSIX_THREADS == 0) && \
    (CONFIGURE_MAXIMUM_ADA_TASKS == 0) &&  \
    (CONFIGURE_MAXIMUM_ITRON_TASKS == 0)

however, the #error statement below this one and the conditional
statement after it do not end in a ".   Is this correct? I believe they
should both be terminated with a ".

Back to the original problem however, This does not solve the problem as
to why the hello_world_c did not make.  This overcome by adding
#define CONFIGURE_MAXIMUM_TASKS 1
 to test.c (in hello_world_c) and this allowed the program to build and
generate an executable as o-optimize/test.exe.

The two issues I am addressing in this long winded message are:

1. Should the two #error statements in
/opt/rtems/pc586/lib/include/confdefs.h be terminated with a " ?, and

2. Should I have to include the CONFIGURE_MAXIMUM_TASKS 1 in test.c?

PS.
Just for a side issue, is it good programming practice to have #include
statements at the bottom of source modules (test.c)?


--
Angelo Fraietta

PO Box 859
Hamilton NSW 2303

Home Page

http://users.hunterlink.net.au/~maaaf/

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