Provided by: remake_3.82+dbg0.9+dfsg-1_amd64 bug

NAME

       remake - GNU make utility with enhanced debugger

SYNOPSIS

       make [ -f makefile ] [ options ] ... [ targets ] ...

WARNING

       This  man  page  is  an  extract  of  the  documentation  of GNU make.  It is updated only
       occasionally, because  the  GNU  project  does  not  use  nroff.   For  complete,  current
       documentation, refer to the Info file make.info which is made from the Texinfo source file
       make.texi.

DESCRIPTION

       The purpose of the make utility is to determine automatically  which  pieces  of  a  large
       program  need  to  be  recompiled,  and  issue the commands to recompile them.  The manual
       describes the GNU implementation of make, which was written by Richard Stallman and Roland
       McGrath,  and is currently maintained by Paul Smith. Extended error reporting and debugger
       extensions were written by Rocky Bernstein.  Our examples show C programs, since they  are
       most  common, but you can use make with any programming language whose compiler can be run
       with a shell command.  In fact, make is not limited  to  programs.   You  can  use  it  to
       describe  any task where some files must be updated automatically from others whenever the
       others change.

       To prepare to use make, you must write a file  called  the  makefile  that  describes  the
       relationships  among  files in your program, and the states the commands for updating each
       file.  In a program, typically the executable file is updated from object files, which are
       in turn made by compiling source files.

       Once a suitable makefile exists, each time you change some source files, this simple shell
       command:

              make

       suffices to perform all necessary recompilations.  The make program uses the makefile data
       base  and the last-modification times of the files to decide which of the files need to be
       updated.  For each of those files, it issues the commands recorded in the data base.

       make executes commands in the makefile to update one or more target names, where  name  is
       typically  a  program.   If  no  -f  option  is  present, make will look for the makefiles
       GNUmakefile, makefile, and Makefile, in that order.

       Normally you should call  your  makefile  either  makefile  or  Makefile.   (We  recommend
       Makefile  because  it appears prominently near the beginning of a directory listing, right
       near other important files such as README.)  The first name checked, GNUmakefile,  is  not
       recommended  for  most makefiles.  You should use this name if you have a makefile that is
       specific to GNU make, and will not be understood by other versions of make.   If  makefile
       is `-', the standard input is read.

       make  updates  a  target if it depends on prerequisite files that have been modified since
       the target was last modified, or if the target does not exist.

OPTIONS

       -b, -m
            These options are ignored for compatibility with other versions of make.

       -B, --always-make
            Unconditionally make all targets.

       -C dir, --directory=dir
            Change to directory dir before reading the makefiles  or  doing  anything  else.   If
            multiple  -C options are specified, each is interpreted relative to the previous one:
            -C / -C etc is equivalent  to  -C  /etc.   This  is  typically  used  with  recursive
            invocations of make.

       -d   Print  debugging  information  in  addition  to  normal  processing.   The  debugging
            information says which files are being considered for remaking, which file-times  are
            being  compared  and with what results, which files actually need to be remade, which
            implicit rules are considered and which are  applied---everything  interesting  about
            how make decides what to do.

        --targets
            Print a list of explicitly named targets found in read-in makefiles.

       --tasks
            Print  a  list  of  explicitly  named  targets  found in read-in makefiles which have
            commands associated with them and are either phony or are not implicit.

       --debug[=FLAGS]
            Print debugging information in addition to  normal  processing.   If  the  FLAGS  are
            omitted,  then  the  behavior is the same as if -d was specified.  FLAGS may be a for
            all debugging output (same as using -d), b for basic debugging, v  for  more  verbose
            basic  debugging,  i  for  showing  implicit  rules,  j  for details on invocation of
            commands, and m for debugging while remaking makefiles.

       -x,  --trace
            Print trace information. Commands in rules which are normally silent are shown,  same
            as if --just-print were given.

       --trace[=FLAGS]
            Set  trace flags If the FLAGS are omitted, then the behavior is the same as if -d was
            specified.  FLAGS may be read for all tracing Makefiles, noshell which is like normal
            but shell tracing is disabled, or full for maximum tracing.

       -X,  --debugger
            Enter debugger

       --debugger[=TYPE]
            Enter  debugger  with If the TYPE are omitted, then the behavior is the same as if -X
            was specified.  TYPE may be goal for all tracing Makefiles read -d), preread which is
            the  same  as  given  no  option  preaction which is like normal but shell tracing is
            disabled full for maximum tracing.  fatal for entering the debugger on a fatal error,
            error for entering the debugger on an error

       -e, --environment-overrides
            Give variables taken from the environment precedence over variables from makefiles.

       -f file, --file=file, --makefile=FILE
            Use file as a makefile.

       -i, --ignore-errors
            Ignore all errors in commands executed to remake files.

       -I dir, --include-dir=dir
            Specifies  a  directory  dir to search for included makefiles.  If several -I options
            are used to specify several directories, the directories are searched  in  the  order
            specified.   Unlike  the  arguments to other flags of make, directories given with -I
            flags may come directly after the flag: -Idir is allowed, as well as  -I  dir.   This
            syntax is allowed for compatibility with the C preprocessor's -I flag.

       -j [jobs], --jobs[=jobs]
            Specifies the number of jobs (commands) to run simultaneously.  If there is more than
            one -j option, the last one is effective.  If the  -j  option  is  given  without  an
            argument, make will not limit the number of jobs that can run simultaneously.

       -k, --keep-going
            Continue as much as possible after an error.  While the target that failed, and those
            that depend on it, cannot be remade, the other dependencies of these targets  can  be
            processed all the same.

       -l [load], --load-average[=load]
            Specifies  that  no  new  jobs  (commands) should be started if there are others jobs
            running and the load average is at least load (a  floating-point  number).   With  no
            argument, removes a previous load limit.

       -L, --check-symlink-times
            Use the latest mtime between symlinks and target.

       -n, --just-print, --dry-run, --recon
            Print the commands that would be executed, but do not execute them (except in certain
            circumstances).

       -o file, --old-file=file, --assume-old=file
            Do not remake the file file even if it is older than its  dependencies,  and  do  not
            remake  anything  on  account of changes in file.  Essentially the file is treated as
            very old and its rules are ignored.

       -p, --print-data-base
            Print the data base (rules  and  variable  values)  that  results  from  reading  the
            makefiles;  then  execute  as  usual or as otherwise specified.  This also prints the
            version information given by the -v switch (see  below).   To  print  the  data  base
            without trying to remake any files, use make -p -f/dev/null.

       -q, --question
            ``Question  mode''.   Do not run any commands, or print anything; just return an exit
            status that is zero if  the  specified  targets  are  already  up  to  date,  nonzero
            otherwise.

       -r, --no-builtin-rules
            Eliminate  use  of  the  built-in implicit rules.  Also clear out the default list of
            suffixes for suffix rules.

       -R, --no-builtin-variables
            Don't define any built-in variables.

       -s, --silent, --quiet
            Silent operation; do not print the commands as they are executed.

       -S, --no-keep-going, --stop
            Cancel the effect of the -k option.  This is never necessary except  in  a  recursive
            make  where -k might be inherited from the top-level make via MAKEFLAGS or if you set
            -k in MAKEFLAGS in your environment.

       -t, --touch
            Touch files (mark them up to date without really changing them)  instead  of  running
            their  commands.   This  is  used to pretend that the commands were done, in order to
            fool future invocations of make.

       -v, --version
            Print the version of the make program plus a copyright,  a  list  of  authors  and  a
            notice that there is no warranty.

       -w, --print-directory
            Print  a  message containing the working directory before and after other processing.
            This may be useful for tracking down errors from complicated nests of recursive  make
            commands.

       --no-print-directory
            Turn off -w, even if it was turned on implicitly.

       -W file, --what-if=file, --new-file=file, --assume-new=file
            Pretend  that  the  target  file has just been modified.  When used with the -n flag,
            this shows you what would happen if you were to modify that file.  Without -n, it  is
            almost  the  same  as  running a touch command on the given file before running make,
            except that the modification time is changed only in the imagination of make.

       --warn-undefined-variables
            Warn when an undefined variable is referenced.

EXIT STATUS

       GNU make exits with a status of zero if all makefiles  were  successfully  parsed  and  no
       targets  that were built failed.  A status of one will be returned if the -q flag was used
       and make determines that a target needs to be rebuilt.  A status of two will  be  returned
       if any errors were encountered.

SEE ALSO

       The GNU Make Manual

BUGS

       See the chapter `Problems and Bugs' in The GNU Make Manual.

AUTHOR

       This manual page contributed by Dennis Morse of Stanford University.  It has been reworked
       by Roland McGrath.  Further updates contributed by Mike Frysinger.

COPYRIGHT

       Copyright (C) 1992, 1993, 1996, 1999, 2007 Free Software Foundation, Inc.   This  file  is
       part of GNU make.

       GNU Make is free software; you can redistribute it and/or modify it under the terms of the
       GNU General Public License as published by the Free Software Foundation; either version  3
       of the License, or (at your option) any later version.

       GNU  Make  is  distributed  in  the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.
       See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program.
       If not, see http://www.gnu.org/licenses/.