mkdep(1) - NetBSD Manual Pages

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MKDEP(1)                NetBSD General Commands Manual                MKDEP(1)


NAME

     mkdep -- construct Makefile dependency list


SYNOPSIS

     mkdep [-aDdiopqv] [-f file] [-P prefix] [-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 Makefile.

     -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''.

     -i      When -d or -D is used, instead of inlining the contents of the
             files to the resulting depend file, use include statements to
             include the source dependency files.

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

     -P      Prepend the string given in prefix to every target filename.
             This is useful for programs that have source files in multiple
             subdirectories and a single Makefile that references all of them
             explicitly (without using the VPATH functionality because there
             can be files with the same name in each subdirectory).

     -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 use-
             ful for programs whose source is contained 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.

     -v      print debugging output.


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 correctly if they appear in file names.  This can lead to
     unparseable output or silently cause dependencies to be lost.

NetBSD 8.3                       March 4, 2013                      NetBSD 8.3