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NetBSD 6.1.5 - man page for mkdep (netbsd section 1)

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MKDEP(1)			   BSD General Commands Manual				 MKDEP(1)

NAME
     mkdep -- construct Makefile dependency list

SYNOPSIS
     mkdep [-aDdopq] [-f file] [-s suffixes] -- [flags] file ...

DESCRIPTION
     mkdep takes a set of flags for the C compiler and a list of C source files as arguments and
     constructs a set of include file dependencies which are written into the file ``.depend''.
     An example of its use in a Makefile might be:

	   CFLAGS= -O -I../include
	   SRCS= file1.c file2.c

	   depend:
		   mkdep -- ${CFLAGS} ${SRCS}

     where the macro SRCS is the list of C source files and the macro CFLAGS is the list of flags
     for the C compiler.

     The options are as follows:

     -a      Append to the output file, so that multiple mkdep's may be run from a single Make-
	     file.

     -D      Post process (as -d) but read the list of filenames from stdin.

     -d      Post process and merge previously created (for example by ``cc -MD x.c'') depend
	     files into a single file.

     -f      Write the include file dependencies to file, instead of the default ``.depend''.

     -o      Add an additional .OPTIONAL line for each dependent file.

     -p      Cause mkdep to produce dependencies of the form:

		   program: program.c

	     so that subsequent makes will produce program directly from its C module rather than
	     using an intermediate .o module.  This is useful for programs whose source is con-
	     tained in a single module.  -p is equivalent to specifying a null suffix with -s.

     -q      Do not print a warning for inaccessible files when -d is given.

     -s      Expand each target filename to a list, replacing the '.o' suffix with each element
	     of suffixes.  The list of suffixes may be space or comma separated.

FILES
     .depend  File containing list of dependencies.

SEE ALSO
     cc(1), cpp(1), make(1)

HISTORY
     The mkdep command appeared in 4.3BSD-Tahoe.

BUGS
     Some characters special to make(1), most notably the comment character, are not escaped cor-
     rectly if they appear in file names.  This can lead to unparseable output or silently cause
     dependencies to be lost.

BSD					 October 15, 2010				      BSD
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