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mkdep — construct Makefile dependency list


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


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

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

env MKDEP_CPP="gcc -E" MKDEP_CPP_OPTS=-MM mkdep \

The options are as follows:

-a Append to the output file, so that multiple mkdep's may be run from a single

-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.


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".

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