MKDEP(1)                FreeBSD General Commands Manual               MKDEP(1)

NAME
     mkdep - construct Makefile dependency list

SYNOPSIS
     mkdep [-ap] [-f file] [flags] file ...

DESCRIPTION
     The mkdep utility 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 user has the ability to change the preprocessor and preprocessor
     options used.  For instance, to use cc as the preprocessor and to ignore
     system headers, one would use

           depend:
                   env MKDEP_CPP="cc -E" MKDEP_CPP_OPTS=-MM mkdep \
                           ${CFLAGS} ${SRCS}

     The options are as follows:

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

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

     -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 contained in a single module.

ENVIRONMENT
     CC              Specifies the C compiler to use.  The specified compiler
                     is expected to have options consistent with the GNU C
                     compiler.  The default is cc.

     MKDEP_CPP       Specifies the preprocessor to use.  The default is "${CC}
                     -E".

     MKDEP_CPP_OPTS  Specifies the non-CFLAGS options for the preprocessor.
                     The default is "-M".

FILES
     .depend  File containing list of dependencies.

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

HISTORY
     The mkdep command appeared in 4.3BSD-Tahoe.

FreeBSD 13.1-RELEASE-p6        October 23, 2015        FreeBSD 13.1-RELEASE-p6