On 6/8/19 6:25 pm, Sebastian Huber wrote:
> On 06/08/2019 10:10, Aby Tom wrote:
>> Dear Sebastian Huber, Jonathan Brandmeyer and RTEMS community,
>> Thank you for your valuable inputs and suggestions to my problem with
>> big-endian targets.
>> I was able to resolve most of the issue by adding the CPU_FLAGS to linker as
>> well.
>> Now I have a few new errors; *‘**compiled for a little endian system and
>> target is big endian**’* which are just opposite of the previous ones.
>
> You get errors like this if you build the BSP and your application (or
> libraries) with inconsistent machine flags. Use the CFLAGS and LDFLAGS of the
> BSP for your application and libraries.
The `rtems-exeinfo` [1] command can help with finding out where the flags are
wrong. For example with the RPi2 BSP I have at hand you can see the machine
flags used to build an object file with ..
$ rtems-exeinfo arm-rtems5/c/raspberrypi2/testsuites/samples/hello/hello-init.o
RTEMS Executable Info 5.3fab1f51102c-modified
rtems-exeinfo arm-rtems5/c/raspberrypi2/testsuites/samples/hello/hello-init.o
exe: arm-rtems5/c/raspberrypi2/testsuites/samples/hello/hello-init.o
Compilation:
Producers: 1
| GNU C11 7.4.0 20181206 (RTEMS 5, RSB
0956a2c089faf2600047577bb153afcaaba22288, Newlib 1d35a003f): 1 objects
Common flags: 4
| -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard
The tool currently does not operation on archives so you will have to extract
the object files to checked them. It does work with object files and
executables.
Chris
[1] https://docs.rtems.org/branches/master/user/tools/exeinfo.html
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