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From: Bryan Drewery <bdrewery@FreeBSD.org>
Date: Tue, 12 Apr 2016 03:40:13 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r297844 - head/tools/build/options
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Author: bdrewery
Date: Tue Apr 12 03:40:13 2016
New Revision: 297844
URL: https://svnweb.freebsd.org/changeset/base/297844

Log:
  Add some more content for WITH_META_MODE.
  
  Sponsored by:	EMC / Isilon Storage Division

Modified:
  head/tools/build/options/WITH_META_MODE

Modified: head/tools/build/options/WITH_META_MODE
==============================================================================
--- head/tools/build/options/WITH_META_MODE	Tue Apr 12 03:37:42 2016	(r297843)
+++ head/tools/build/options/WITH_META_MODE	Tue Apr 12 03:40:13 2016	(r297844)
@@ -1,3 +1,12 @@
 .\" $FreeBSD$
 Create meta files when not doing DIRDEPS_BUILD.
-The meta files can be useful for debugging.
+When the
+.Xr filemon 4
+module is loaded, dependencies will be tracked for all commands.
+If any command, its dependencies, or files it generates are missing then
+the target will be considered out-of-date and rebuilt.
+The meta files can also be useful for debugging.
+.Pp
+The build will hide commands ran unless
+.Va NO_SILENT
+is defined.