freebsd-nq/contrib/bind/doc/man/mkdep.1
2002-05-13 19:33:58 +00:00

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.\" Copyright (c) 1987 Regents of the University of California.
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.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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.\" @(#)mkdep.1 5.8 (Berkeley) 10/24/88
.\"
.Dd October 24, 1988
.Dt MKDEP @CMD_EXT_U@
.Os BSD 4
.Sh NAME
.Nm mkdep
.Nd construct Makefile dependency list
.Sh SYNOPSIS
.Nm mkdep
.Op Fl ap
.Op Fl f Ar depend_file
.Op Ar flags
.Ar
.Sh DESCRIPTION
.Ic Mkdep
takes a set of flags for the C compiler and a list
of C source files as arguments and constructs a set of
.Li include
file dependencies which are written into the file
.Pa depend_file ,
or
.Dq Pa .depend
by default. An example of its use in a
.Pa Makefile
might be:
.Bd -literal -offset indent
CFLAGS= -O -DDEBUG -I../include -I.
SRCS= file1.c file2.c
depend:
mkdep ${CFLAGS} ${SRCS}
.Ed
.Pp
where the macro
.Dq Li SRCS
is the list of C source files and the macro
.Dq Li CFLAGS
is the list of flags for the C compiler.
.Pp
If the
.Dq Fl p
option is provided,
.Ic mkdep
produces dependencies
of the form
.Dq Li program: program.c
so that subsequent calls to
.Xr make @CMD_EXT@
will produce
.Dq Pa program
directly from its C module rather than using an intermediate
.Dq Pa \&.o
module. This is useful in directories which
contain many programs, each of whose source is contained in a single
C module.
.Pp
The
.Dq Fl a
option causes appending to the output file, so that multiple
.Ic mkdep Ns 's
may be run from a single
.Pa Makefile .
.Sh SEE ALSO
.Xr cc @CMD_EXT@ ,
.Xr cpp @CMD_EXT@ ,
.Xr make @CMD_EXT@ .