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@(#)mkdep.1 8.1 (Berkeley) 6/6/93
$FreeBSD: releng/10.3/usr.bin/mkdep/mkdep.1 291788 2015-12-04 18:04:56Z bdrewery $
.Dd October 23, 2015 .Dt MKDEP 1 .Os .Sh NAME .Nm mkdep .Nd construct Makefile dependency list .Sh SYNOPSIS .Nm .Op Fl ap .Op Fl f Ar file .Op Ar flags .Ar .Sh DESCRIPTION The .Nm 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: d -literal -offset indent CFLAGS= -O -I../include SRCS= file1.c file2.c depend: mkdep ${CFLAGS} ${SRCS} .Ed
p where the macro SRCS is the list of C source files and the macro CFLAGS is the list of flags for the C compiler.
p The user has the ability to change the preprocessor and preprocessor options used. For instance, to use .Sy cc as the preprocessor and to ignore system headers, one would use d -literal -offset indent depend: env MKDEP_CPP="cc -E" MKDEP_CPP_OPTS=-MM mkdep \\ ${CFLAGS} ${SRCS} .Ed
p The options are as follows: l -tag -width Ds t Fl a Append to the output file, so that multiple .Nm Ns 's may be run from a single Makefile. t Fl f Write the include file dependencies to .Ar file , instead of the default ``.depend''. t Fl p Cause .Nm to produce dependencies of the form: d -literal -offset indent program: program.c .Ed
p so that subsequent makes will produce .Ar program directly from its C module rather than using an intermediate
a .o module. This is useful for programs whose source is contained in a single module. .El .Sh ENVIRONMENT l -tag -width MKDEP_CPP_OPTS t Ev CC Specifies the C compiler to use. The specified compiler is expected to have options consistent with the GNU C compiler. The default is .Sy cc . t Ev MKDEP_CPP Specifies the preprocessor to use. The default is "${CC} -E". t Ev MKDEP_CPP_OPTS Specifies the non-CFLAGS options for the preprocessor. The default is "-M". .El .Sh FILES l -tag -width .depend -compact t Pa .depend File containing list of dependencies. .El .Sh SEE ALSO .Xr cc 1 , .Xr cpp 1 , .Xr make 1 .Sh HISTORY The .Nm command appeared in x 4.3 Tahoe .