GDB 9.1 Fails to Build on Cygwin

[Hannes Domani]

 Am Mittwoch, 25. März 2020, 20:01:06 MEZ hat Joel Sherrill <joel@rtems.org> Folgendes geschrieben:

> Hi
>
> Over at RTEMS, we are seeing gdb 9.1 fail to build arm-eabi and fail with
> this:
>
> CXXLD  gdb.exe
> cp-support.o:/desk/b-arm-eabi-bin/gdb/../../gdb-9.1/gdb/cp-support.c:2212:(.text+0x1bf6):
> relocation truncated to fit: R_X86_64_PC32 against undefined symbol `TLS
> init function for thread_local_segv_handler'
> cp-support.o:/desk/b-arm-eabi-bin/gdb/../../gdb-9.1/gdb/cp-support.c:2212:(.text+0x1c00):
> relocation truncated to fit: R_X86_64_PC32 against undefined symbol `TLS
> init function for thread_local_segv_handler'
> collect2: error: ld returned 1 exit status
> make[2]: *** [Makefile:1908: gdb.exe] Error 1
> make[2]: Leaving directory '/desk/b-arm-eabi-bin/gdb'
> make[1]: *** [Makefile:9567: all-gdb] Error 2
> make[1]: Leaving directory '/desk/b-arm-eabi-bin'
> make: *** [Makefile:855: all] Error 2
>
> gdb 8.0.1 builds OK.
>
> Does anyone have any ideas how to solve this?

This looks very much like gcc bug 64697:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64697

And 8.0.1 didn't use thread_local yet (9.1 is the first version that uses it).


Regards
Hannes Domani