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Man Pages


Manual Reference Pages  -  MKDEP (1)

NAME

mkdep - construct Makefile dependency list

CONTENTS

Synopsis
Description
Environment
Files
See Also
History

SYNOPSIS

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

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 ’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 BSD 4.3 Tahoe .
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