40 lines
838 B
Plaintext
40 lines
838 B
Plaintext
.\" $FreeBSD$
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Set to use
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.Xr ccache 1
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for the build.
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No configuration is required except to install the
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.Sy devel/ccache
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package.
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When using with
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.Xr distcc 1 ,
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set
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.Sy CCACHE_PREFIX=/usr/local/bin/distcc .
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The default cache directory of
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.Pa $HOME/.ccache
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will be used, which can be overridden by setting
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.Sy CCACHE_DIR .
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The
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.Sy CCACHE_COMPILERCHECK
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option defaults to
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.Sy content
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when using the in-tree bootstrap compiler,
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and
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.Sy mtime
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when using an external compiler.
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The
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.Sy CCACHE_CPP2
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option is used for Clang but not GCC.
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.Pp
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Sharing a cache between multiple work directories requires using a layout
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similar to
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.Pa /some/prefix/src
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.Pa /some/prefix/obj
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and an environment such as:
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.Bd -literal -offset indent
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CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj'
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.Ed
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.Pp
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See
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.Xr ccache 1
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for more configuration options.
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