GDB 9.1 Fails to Build on Cygwin

[Joel Sherrill]

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?

Thanks.

--joel
RTEMS