mkdep - construct Makefile dependency list
mkdep [-ap] [-f depend_file] [flags] file ...
Mkdep 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_file, or ``.depend'' by default. An example of its use in a Makefile might be:
CFLAGS= -O -DDEBUG -I../include -I. 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.
If the ``-p'' option is provided, mkdep produces dependencies of the form ``program: program.c'' so that subsequent calls to make(1) will produce ``program'' directly from its C module rather than using an intermediate ``.o'' module. This is useful in directories which contain many programs, each of whose source is contained in a single C module.
The ``-a'' option causes appending to the output file, so that multiple mkdep's may be run from a single Makefile.