Re: building R3.14 problem for RTEMS

[Till Straumann <strauman@SLAC.Stanford.EDU>]

M.C.Shao wrote:
> ----- Original Message ----- 
> From: "Till Straumann" <strauman@slac.stanford.edu>
> To: "M.C.Shao" <ShaoMingchao97@mails.tsinghua.edu.cn>
> Cc: "Andrew Johnson" <anj@aps.anl.gov>; "Tech-talk" <tech-talk@aps.anl.gov>
> Sent: Monday, November 18, 2002 6:29 PM
> Subject: Re: building R3.14 problem for RTEMS
>
>
>
> > This is configured in epics/base/configure/os/CONFIG.Common.RTEMS
> > where RTEMS_BASE is set.
> >
> > -- Till
>
> I don't think so , I have cheked that configure file, and RTEMS_BASE is set to be "/opt/rtems" where the rtems is installed on my computer.The problem still exists.

Could be that you're fighting just one more head of the 'autotool' hydra:

CONFIG.Common.RTEMS expands the makefile variable CC_FOR_TARGET.

CC_FOR_TARGET is set in your RTEMS BSP's Makefile.inc (look in the RTEMS 
installation tree, _not_ EPICS).

Makefile.inc is created when you build RTEMS. 'c/src/make/configure'
is responsible for the relevant expansion:

Makefile.inc will end up defining

CC_FOR_TARGET = <whatever the CC environment variable was set to when 
you configured RTEMS>

I.e.:

you probably configured RTEMS in the following way:

configure CC=/opt/rtems..../

Instead, you should add the proper directory to your PATH and

configure CC=i386-rtems-gcc

(Note that it is _very_ advisable to use 'target'-gcc rather than
the 'gcc' alias in some 'target' subdir!!!)

You can chop that head off by simply editing 'Makefile.inc'
(correct the CC_FOR_TARGET & friends definitions) but remember
that the hydra will grow a new head next time you 'make' RTEMS
- unless you reconfigure.

HTH

-- Till