32 lines
771 B
Plaintext
32 lines
771 B
Plaintext
.\" $FreeBSD$
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Enable building in meta mode.
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.Pp
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The build is driven by dirdeps.mk using
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.Va DIRDEPS
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stored in
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Makefile.depend files found in each directory.
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.Pp
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The build can be started from anywhere, and behaves the same.
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The initial instance of
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.Xr make 1
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recursively reads
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.Va DIRDEPS
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from Makefile.depend
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computing a graph of tree dependencies from the current origin.
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See http://www.crufty.net/help/sjg/dirdeps.htm
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.Pp
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As each target is made
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.Xr make 1
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produces a meta file which is used to capture (and compare)
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the command line,
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as well as any command output.
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If
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.Xr filemon 4
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is available the meta file will also capture a record of files
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used to produce the target by tracking syscalls.
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.Pp
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The build will hide commands ran unless
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.Va NO_SILENT
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is defined.
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.Pp
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