rtems-tools: Trace linker wrapper with trace buffer fails to compile in 4.11

[Martin Erik Werner]

Using rtems-tools 4.11 and enabling the trace buffer generator, I'm getting errors like this:

or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c: In function '__rtld_tbg_in_irq':
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c:159:10: error: '_ISR_Nest_level' undeclared (first use in this function)
or1k-aac-rtems4.11-gcc:    return _ISR_Nest_level ? (1 << 31) : 0;
or1k-aac-rtems4.11-gcc:           ^
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c:159:10: note: each undeclared identifier is reported only once for each function it appears in
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c: In function '__rtld_tbg_executing_id':
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c:164:10: error: '_Thread_Executing' undeclared (first use in this function)
or1k-aac-rtems4.11-gcc:    return _Thread_Executing->Object.id;
or1k-aac-rtems4.11-gcc:           ^
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c: In function '__rtld_tbg_executing_status':
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c:170:11: error: '_Thread_Executing' undeclared (first use in this function)
or1k-aac-rtems4.11-gcc:    return (_Thread_Executing->current_priority << 8) | _Thread_Executing->real_priority;
or1k-aac-rtems4.11-gcc:            ^
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c: In function '__rtld_tbg_executing_state':
or1k-aac-rtems4.11-gcc: /tmp/rld--Ixtaaa.c:175:10: error: '_Thread_Executing' undeclared (first use in this function)
or1k-aac-rtems4.11-gcc:    return _Thread_Executing->current_state;
or1k-aac-rtems4.11-gcc:           ^
error: compiling wrapper: Compiler error

These errors are probably not present in the rtems-tools master branch (I know that using rtems-tools master on rtems 4.11 has worked previously).

I'm guessing that this could either be fixed by adding something like

header = '#include <rtems/score/percpu.h>'

in rtld-trace-buffer.ini

or by backporting the following change from the rtems-tools master branch to 4.11:
​https://git.rtems.org/rtems-tools/commit/linkers/rtld-trace-buffer.ini?id=f11d18b9b1f438b2dc83b92e39d945d5ac654bbd
which seems to have the necessary includes in place.