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.
