Re: cross compiling EPICS for etrax

[Andrew Johnson <anj@aps.anl.gov>]

Marc Stockmeier wrote:
> we try to compile EPICS for a ETRAX multichipmodule
> (http://developer.axis.com/).

What kind of CPU is the "32 bit RISC CPU core" on this device?  Is it an 
ARM, and x86 derivative, or something more exotic?  I can't find 
anything on that website that hints the answer to this question. 
Porting EPICS to a new OS and/or CPU family will probably require you to 
do some work.

> In order to get an base-3.14.7/src/libCom/osi/os/cris-AXIS directory we
> copied the stuff from base-3.14.7/src/libCom/osi/os/Linux
> We created the necessary configfile: CONFIG.Common.cris-AXIS at
> base-3.14.7/configure/os/.

If you're building this for Linux, your target architecture should be 
named something like linux-XXXX where the XXXX part is as generic a CPU 
name as is possible.  The OS_CLASS for this target architecture as named 
in configure/os/CONFIG.Common.linux-XXXX would be "Linux" and there 
should be no need for you to have copied the osi/os/Linux directory 
contents since this code should work on all Linux systems.  If you do 
copy the osi/os/Linux directory then if we need to make any changes to 
the Linux code in the future, your copy is likely to stop working.

On the other hand if you're really building for a new OS called 'cris' 
then you may have some porting work to do - the src/libCom/osi/os code 
is OS-specific, and unless the OS is posix compliant you can expect to 
have to understand the src/libCom/osi directory and to write your own 
implementations of some of these routines.

> Compilation stops due to the following error:
>
> make[3]: Entering directory
> `/share/home/marc/hades_ETRAX/devboard-R2_01/apps/base-3.14.7/src/libCom/O.cris-AXIS'
> Installing generic include file ../../../include/os/cris-AXIS/osdThread.h
> /usr/local/cris/bin/g++-cris -c            -DUNIX               -DUNIX

What version of GCC is this?

> ../../../src/libCom/cxxTemplates/epicsOnce.cpp
> In file included from ../../../src/libCom/osi/epicsThread.h:200,
>                  from ../../../src/libCom/cxxTemplates/epicsSingleton.h:26,
>                  from ../../../src/libCom/cxxTemplates/epicsOnce.cpp:29:
> ../../../include/os/cris-AXIS/osdThread.h:19: parse error before `)' token
> make[3]: *** [epicsOnce.o] Error 1
>
> It looks like a "real" error in the osdThread.h file.

It works fine on all the Linux boxes we've tried it on.  You're going to 
have to chase this a bit more by yourself since we have no way or 
replicating your results.  I wish I could help, but so far I have 
nothing much to go on.

- Andrew
--
There is no S in exprexxo.