1.\" Copyright (c) 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. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd February 27, 2024 29.Dt LORDER 1 30.Os 31.Sh NAME 32.Nm lorder 33.Nd list dependencies for object files 34.Sh SYNOPSIS 35.Nm 36.Ar 37.Sh DESCRIPTION 38The 39.Nm 40utility uses 41.Xr nm 1 42to determine interdependencies between object files and library 43archives listed on its command line. 44It then outputs a list of pairs of file names such that the first file 45in each pair references at least one symbol defined by the second. 46.Pp 47The output is normally used with 48.Xr tsort 1 49when a library is created to determine the optimum ordering of the 50object modules so that all references may be resolved in a single 51pass of the loader. 52.Pp 53Similarly, when linking static binaries, 54.Nm 55and 56.Xr tsort 1 57can be used to sort libraries in order of dependency. 58.Pp 59While contemporary linkers no longer require the use of 60.Nm , 61it is provided for the benefit of legacy code bases and build 62systems which still insist on it. 63.Sh ENVIRONMENT 64.Bl -tag -width indent 65.It Ev NM 66Path to the 67.Xr nm 1 68binary, defaults to 69.Dq Li nm . 70.It Ev NMFLAGS 71Flags to pass to 72.Xr nm 1 . 73.El 74.Sh EXAMPLES 75.Bd -literal -offset indent 76ar cr library.a `lorder ${OBJS} | tsort` 77cc -o foo ${OBJS} `lorder ${STATIC_LIBS} | tsort` 78.Ed 79.Sh SEE ALSO 80.Xr ar 1 , 81.Xr ld 1 , 82.Xr nm 1 , 83.Xr ranlib 1 , 84.Xr tsort 1 85.Sh HISTORY 86A 87.Nm 88utility appeared in 89.At v7 . 90.Sh CAVEATS 91The 92.Nm 93utility will not work properly if given file names with spaces or 94newlines in them. 95