Movement of confdefs instance into a static library

[Sebastian Huber]

On 17/03/2022 14:22, Kinsey Moore wrote:
> On 3/17/2022 00:39, Sebastian Huber wrote:
>> Hello Kinsey,
>>
>> On 16/03/2022 22:57, Kinsey Moore wrote:
>>> Is moving the confdefs instance into a shared library supported and 
>>> expected to work?
>>
>> yes, but the order in which the linker resolves the dependencies is 
>> very important. You have to make sure that the custom configuration is 
>> resolved before the default configuration.
>>
>>>
>>> I was also able to resolve the linker errors by specifying some of 
>>> the link flags multiple times or creating a linker group.
>>
>> These are ways to address the ordering. It would help if you can show 
>> the linker command lines and the error messages.
>>
> The link command is:
> 
> arm-rtems6-gcc testsuites/fstests/fserror/test.c.113.o 
> -o/home/kinsey/rtems-development/rtems-ddci/build/arm/deos/testsuites/fstests/imfs_fserror.exe 
> -Wl,-Bstatic -L. -ltestimfs -lrtemstest -lrtemscpu -lrtemsbsp 
> -Wl,-Bdynamic -qrtems -march=armv7-a -mfpu=neon -mfloat-abi=hard -mthumb 
> -gdwarf-2 -fPIC -Wl,--gc-sections 
> -L/home/kinsey/rtems-development/rtems-ddci/bsps/arm/shared/start 
> -L/home/kinsey/rtems-development/rtems-ddci/bsps/arm/deos/start 
> -Wl,-call_shared -Wl,-no-undefined /desk/arm/lib/libkernel.so 
> /desk/arm/lib/libdeos653pal.so -L/desk/arm/appbin -ltime-prl -lface653 
> -lgcc-so -Wl,--wrap=printf -Wl,--wrap=puts -Wl,--wrap=putchar

I think the problem is that you don't use -qrtems and your start file 
has no dependency on a configuration symbol (for example 
_ISR_Stack_area_begin). You have to make sure that somehow the 
configuration in libtestimfs.a is pulled in.

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