Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Mon, 28 Nov 2016 17:54:49 +0100

On 28.11.2016 15:49, Jianxun Yan wrote:
> RTEMS version 4.11.
> 
> EPICS base3-15.1
> 
> I am trying to port the EPICS/RTEMS for Altera Soc FPGA. When I built
> the epics base, I got these errors
> 
> ........
> 
> /group/eesicgrp/yanjx/workspace/rtems411/bin/../lib/gcc/arm-rtems4.11/4.9.3/../../../../arm-rtems4.11/bin/ld:
> error:
> /group/eesicgrp/yanjx/workspace/bsps/4.11/arm-rtems4.11/altcycv_devkit/lib/librtemscpu.a(libposix_a-killinfo.o)
> uses VFP register arguments, libComTestHarness does not
> /group/eesicgrp/yanjx/workspace/rtems411/bin/../lib/gcc/arm-rtems4.11/4.9.3/../../../../arm-rtems4.11/bin/ld:
> failed to merge target specific data of file
> /group/eesicgrp/yanjx/workspace/bsps/4.11/arm-rtems4.11/altcycv_devkit/lib/librtemscpu.a(libposix_a-killinfo.o)
> 
> ......
> 
> I can build the RTEMS4.11 and run it on Altera Soc FPGA
> (altcycv_devkit), but have problem to build the epics base. Does anyone
> have any idea what is causing this?

Not sure but

  ".../librtemscpu.a uses VFP register arguments, libComTestHarness does
not"

sounds a lot like a mismatch of compiler or linker flags between the BSP
and EPICS.

Also my first guess for what "VFP" means would be "virtual floating
point" i.e. use FP emulation instead of a 'real' FP unit.

Cheers
Ben
-- 
"Make it so they have to reboot after every typo." ― Scott Adams

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System