1.\" Copyright (c) 1987, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)mkdep.1 8.1 (Berkeley) 6/6/93 33.\" 34.Dd June 6, 1993 35.Dt MKDEP 1 36.Os BSD 4.2 37.Sh NAME 38.Nm mkdep 39.Nd construct Makefile dependency list 40.Sh SYNOPSIS 41.Nm 42.Op Fl ap 43.Op Fl f Ar file 44.Op Ar flags 45.Ar file ... 46.Sh DESCRIPTION 47.Nm Mkdep 48takes a set of flags for the C compiler and a list 49of C source files as arguments and constructs a set of include 50file dependencies which are written into the file ``.depend''. 51An example of its use in a Makefile might be: 52.Bd -literal -offset indent 53CFLAGS= -O -I../include 54SRCS= file1.c file2.c 55 56depend: 57 mkdep ${CFLAGS} ${SRCS} 58.Ed 59.Pp 60where the macro SRCS is the list of C source files and the macro 61CFLAGS is the list of flags for the C compiler. 62.Pp 63The user has the ability to change the preprocessor and preprocessor options 64used. For instance, to use Gcc as the preprocessor and to ignore system 65headers, one would use 66.Bd -literal -offset indent 67depend: 68 env MKDEP_CPP="gcc -E" MKDEP_CPP_OPTS=-MM mkdep \\ 69 ${CFLAGS} ${SRCS} 70.Ed 71.Pp 72The options are as follows: 73.Bl -tag -width Ds 74.It Fl a 75Append to the output file, 76so that multiple 77.Nm mkdep Ns 's 78may be run from a single Makefile. 79.It Fl f 80Write the include file dependencies to 81.Ar file , 82instead of the default ``.depend''. 83.It Fl p 84Cause 85.Nm 86to produce dependencies of the form: 87.Bd -literal -offset indent 88program: program.c 89.Ed 90.Pp 91so that subsequent makes will produce 92.Ar program 93directly from its C module rather than using an intermediate 94.Pa \&.o 95module. 96This is useful for programs whose source is contained in a single 97module. 98.Sh ENVIRONMENT 99.Bl -tag -width MKDEP_CPP_OPTS 100.It Ev CC 101Specifies the C compiler to use. The specified compiler is expected to have 102options consistant with the Gnu C compiler. 103.It Ev MKDEP_CPP 104Specifies the preprocessor to use. The default is "${CC} -E". 105.It Ev MKDEP_CPP_OPTS 106Specifie the non-CFLAGS options for the preprocessor. The default is 107"-M". 108.El 109.Sh SEE ALSO 110.Xr cc 1 , 111.Xr cpp 1 , 112.Xr make 1 113.Sh FILES 114.Bl -tag -width .depend -compact 115.It Pa .depend 116File containing list of dependencies. 117.El 118.Sh HISTORY 119The 120.Nm 121command appeared in 122.Bx 4.3 Tahoe . 123