This will print a set of variables from make on error using
MAKE_PRINT_VAR_ON_ERROR. It is already enabled for the DIRDEPS_BUILD.
It may make sense to enable this in the non-meta mode as well once
people are more used to its more verbose error output.
This makes it much simpler to see which .meta file is used when a
command files so that it may be inspected for the build command.
Suggested by: sjg
Approved by: re (implicit)
Sponsored by: EMC / Isilon Storage Division
- Move the sys.mk filemon requirement to bsd.init.mk as a warning.
This is intended only to show when building directly in a subdirectory
without filemon loaded.
- Move the error into Makefile and only apply it when building
from the META_TGT_WHITELIST target list.
-DNO_FILEMON can be used to suppress both the warning and the error but
makes WITH_META_MODE less useful. It will only compare build commands
in this mode rather than track all dependencies.
This fixes installing from a jail which doesn't need filemon in this
phase [1].
Reported by: Nikolai Lifanov <lifanov@mail.lifanov.com> [1]
Approved by: re (implicit)
Sponsored by: EMC / Isilon Storage Division
makeman doesn't handle this since it would need to enable all
non-default options when checking enabling 1 option, which
then convolutes what is really affecting each other.
This allows META_FILES option to be renamed META_MODE.
Also add META_COOKIE_TOUCH for use in targets that can benefit
from a cookie when in meta mode.
Differential Revision: https://reviews.freebsd.org/D4153
Reviewed by: bdrewery
