MKDEP(1) BSD General Commands Manual MKDEP(1)NAMEmkdep — construct Makefile dependency list
SYNOPSISmkdep [-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 dependen‐
cies 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} ${SRCS}
The options are as follows:
-a Append to the output file, so that multiple mkdep's may be run
from a single Makefile.
-f Write the include file dependencies to file, instead of the
default ``.depend''.
-p Cause mkdep to produce dependencies of the form:
program: program.c
so that subsequent makes will produce program directly from its C
module rather than using an intermediate .o module. This is use‐
ful for programs whose source is contained in a single module.
ENVIRONMENT
CC Specifies the C compiler to use. The specified compiler
is expected to have options consistent with the GNU C
compiler.
MKDEP_CPP Specifies the preprocessor to use. The default is "${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 ALSOcc(1), cpp(1), make(1)HISTORY
The mkdep command appeared in 4.3BSD-Tahoe.
BSD June 6, 1993 BSD