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.
2021-12-13 Olivier Hainque <hainque@adacore.com>
* config/vxworks/_yvals.h: #include yvals.h also if
defined(__RTP__).
#include <_vxworks-versions.h>
-#if _VXWORKS_MAJOR_GE(7)
+/* #include the VxWorks yvals.h in setups we expect it to be available.
+ It is around for both kernel mode and rtps on VxWorks >= 7, only for
+ rtps prior to that. */
+
+#if _VXWORKS_MAJOR_GE(7) || defined(__RTP__)
/* We need to deactivate the definitions tailored for the Dinkumware
intrinsics, incompatible with a compilation by G++. */