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.\" $FreeBSD$ 34.\" 35.Dd June 6, 1993 36.Dt MKDEP 1 37.Os 38.Sh NAME 39.Nm mkdep 40.Nd construct Makefile dependency list 41.Sh SYNOPSIS 42.Nm 43.Op Fl ap 44.Op Fl f Ar file 45.Op Ar flags 46.Ar 47.Sh DESCRIPTION 48.Nm Mkdep 49takes a set of flags for the C compiler and a list 50of C source files as arguments and constructs a set of include 51file dependencies which are written into the file ``.depend''. 52An example of its use in a Makefile might be: 53.Bd -literal -offset indent 54CFLAGS= -O -I../include 55SRCS= file1.c file2.c 56 57depend: 58 mkdep ${CFLAGS} ${SRCS} 59.Ed 60.Pp 61where the macro SRCS is the list of C source files and the macro 62CFLAGS is the list of flags for the C compiler. 63.Pp 64The user has the ability to change the preprocessor and preprocessor options 65used. For instance, to use gcc as the preprocessor and to ignore system 66headers, one would use 67.Bd -literal -offset indent 68depend: 69 env MKDEP_CPP="gcc -E" MKDEP_CPP_OPTS=-MM mkdep \\ 70 ${CFLAGS} ${SRCS} 71.Ed 72.Pp 73The options are as follows: 74.Bl -tag -width Ds 75.It Fl a 76Append to the output file, 77so that multiple 78.Nm Ns 's 79may be run from a single Makefile. 80.It Fl f 81Write the include file dependencies to 82.Ar file , 83instead of the default ``.depend''. 84.It Fl p 85Cause 86.Nm 87to produce dependencies of the form: 88.Bd -literal -offset indent 89program: program.c 90.Ed 91.Pp 92so that subsequent makes will produce 93.Ar program 94directly from its C module rather than using an intermediate 95.Pa \&.o 96module. 97This is useful for programs whose source is contained in a single 98module. 99.El 100.Sh ENVIRONMENT 101.Bl -tag -width MKDEP_CPP_OPTS 102.It Ev CC 103Specifies the C compiler to use. The specified compiler is expected to have 104options consistent with the GNU C compiler. 105.It Ev MKDEP_CPP 106Specifies the preprocessor to use. The default is "${CC} -E". 107.It Ev MKDEP_CPP_OPTS 108Specifie the non-CFLAGS options for the preprocessor. The default is 109"-M". 110.El 111.Sh SEE ALSO 112.Xr cc 1 , 113.Xr cpp 1 , 114.Xr make 1 115.Sh FILES 116.Bl -tag -width .depend -compact 117.It Pa .depend 118File containing list of dependencies. 119.El 120.Sh HISTORY 121The 122.Nm 123command appeared in 124.Bx 4.3 Tahoe . 125