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Command: mkdep | Section: 1 | Source: FreeBSD | File: mkdep.1.gz
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 14.1-RELEASE-p8 October 23, 2015 FreeBSD 14.1-RELEASE-p8