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 gcc as the preprocessor and to ignore system
headers, one would use
depend:
env MKDEP_CPP="gcc -E" MKDEP_CPP_OPTS=-MM mkdep \
${CFLAGS} ${SRCS}
The options are as follows:
-a- Append to the output file, so that multiple
mkdep's may be run from a single
Makefile.
-f- Write the include file dependencies to
file, instead of the default
``.depend''.
-p- Cause
mkdep to produce dependencies of
the form:
so that subsequent makes will produce
program directly from its C module rather
than using an intermediate .o module.
This is useful for programs whose source is contained in a single
module.
ENVIRONMENT¶
CC- Specifies the C compiler to use. The specified compiler is expected to
have options consistent with the GNU C compiler.
MKDEP_CPP- Specifies the preprocessor to use. The default is "${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.
