Hello, For -mrtp on VxWorks 6.9, at least inttypes.h ends up #including system headers checking that _BITS_BYTES is 8, which the system yvals.h defines. We do pre-include _yvals.h ahead of inttypes.h for this kind of purpose, but it currently assumes that only VxWorks >= 7 provides yvals.h.
This results in unexpected configure checks failures, complaining about
_BITS_BYTES not being 8, spotted while inspecting libstdc++ config.log for
unrelated reasons.
This change relaxes the guard in _yvals.h to include yvals.h for
__RTP__ in addition to version >= 7.
I had good builds and test results with this in-house for gcc-11 based
toolchains for a variety of targets. I checked that a build for vx6.9
passes with mainline sources and verified that the spurious configure
test failures are gone.
Will commit shortly.
I'm not 100% sure about the situation on VxWorks 5. This is easy to
adjust if need be.
Olivier
2021-12-13 Olivier Hainque <hain...@adacore.com>
* config/vxworks/_yvals.h: #include yvals.h also if
defined(__RTP__).
0002-Include-yvals.h-for-VxWorks-7-RTPs-as-well.patch
Description: Binary data
