LTP: Open posix testsuite fails with OpenWatcom

[winspool]

I found a POSIX testsuite in the LTP project and tried it with OpenWatcom:
( https://github.com/linux-test-project/ltp/tree/master/testcases/open_posix_testsuite )

PASSED: 672
FAILED: 1163

---

Some of the failures are from the usage of non portable gcc extensions

Example: "__attribute__"
(I will look at this and contact the Linux Test Project)

Many failures are from unimplemented features in OpenWatcom.
Examples:
Error! E1011: Symbol '_SC_TIMER_MAX' has not been declared
Error! E1011: Symbol '_POSIX_TIMER_MAX' has not been declared
Error! E1055: Unable to open 'aio.h'
Error! E1055: Unable to open 'mqueue.h'

---

Example References:

aio.h:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/aio.h.html

mqueue.h:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/mqueue.h.html

---

Full list of failures, when owcc is used:

_log_owcc_errors_2024.04.23.txt.gz

Please help, when you can.

[winspool]

The GCC extension "__attribute__"
creates 458 test failures with owcc.

My pull request for a workaround:
linux-test-project/ltp#1154

The 'LTP' project prefers an Email
(send with 'git send-email'),
but unfortunately, 'git send-email' fails here.
I'm looking at it.

[jmalak]

It is big task to implement most of POSIX.
It depends on contributors to extend OW to be more POSIX compliant.
POSIX requires mainly implement appropriate functions in run-time library and add appropriate header files.
Now OW implement very "basic" part of POSIX functions.