On el8, sparse is at 0.6.4 in epel-release, but it fails with:
```
[SP src/util.c]
src/util.c: note: in included file (through /usr/include/sys/stat.h):
/usr/include/bits/statx.h:30:6: error: not a function <noident>
/usr/include/bits/statx.h:30:6: error: bad constant expression type
```
This is due to us needing O_DIRECT from <fcntl.h>, so we set _GNU_SOURCE
before including it, but this causes (through _USE_GNU in sys/stat.h)
statx.h to be included, and that has __has_include, and sparse is too
dumb to understand it.
Just shut it up.
Signed-off-by: Auke Kok <auke.kok@versity.com>
Fail the build if we don't check with sparse in both the kernel and
userspace utils. Add a filtering wrapper to the kernel build so that we
have a place to filter out uninteresting errors from kernel sources that
we're building against.
Signed-off-by: Zach Brown <zab@versity.com>
We should rely on sparse from epel to do automated sparse checking and
not a git tag. But the 0.6.4 build currently fails on sparse/gcc
redefines.
This magic Awk from Zach script processes sparse and gcc internal defines
and leaves the one intact that sparse doesn't have.
Signed-off-by: Auke Kok <auke.kok@versity.com>