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This directory contains the 4.3 release of GNU Make. See the file NEWS for the user-visible changes from previous releases. In addition, there have been bugs fixed. Please check the system-specific notes below for any caveats related to your operating system. If you are trying to build GNU make from a Git clone rather than a downloaded source distribution, see the README.git file for instructions. For source distribution building and installation instructions, see the file INSTALL. If you need to build GNU Make and have no other 'make' program to use, you can use the shell script 'build.sh' instead. To do this, first run 'configure' as described in INSTALL. Then, instead of typing 'make' to build the program, type 'sh build.sh'. This should compile the program in the current directory. Then you will have a Make program that you can use for './make install', or whatever else. Some systems' Make programs cannot process the Makefile for GNU Make. If you get errors from your system's Make when building GNU Make, try using 'build.sh' instead. GNU Make is free software. See the file COPYING for copying conditions. GNU Make is copyright by the Free Software Foundation. Copyright notices condense sequential years into a range; e.g. "1987-1994" means all years from 1987 to 1994 inclusive. Downloading ----------- GNU Make can be obtained in many different ways. See a description here: http://www.gnu.org/software/software.html Documentation ------------- GNU make is fully documented in the GNU Make manual, which is contained in this distribution as the file make.texinfo. You can also find on-line and preformatted (PostScript and DVI) versions at the FSF's web site. There is information there about ordering hardcopy documentation. http://www.gnu.org/ http://www.gnu.org/doc/doc.html http://www.gnu.org/manual/manual.html Development ----------- GNU Make development is hosted by Savannah, the FSF's online development management tool. Savannah is here: http://savannah.gnu.org And the GNU Make development page is here: http://savannah.gnu.org/projects/make/ You can find most information concerning the development of GNU Make at this site. Bug Reporting ------------- You can send GNU make bug reports to <bug-make@gnu.org>. Please see the section of the GNU make manual entitled 'Problems and Bugs' for information on submitting useful and complete bug reports. You can also use the online bug tracking system in the Savannah GNU Make project to submit new problem reports or search for existing ones: http://savannah.gnu.org/bugs/?group=make If you need help using GNU make, try these forums: help-make@gnu.org help-utils@gnu.org news:gnu.utils.help news:gnu.utils.bug Git Access ---------- The GNU make source repository is available via Git from the GNU Savannah Git server; look here for details: http://savannah.gnu.org/git/?group=make Please note: you won't be able to build GNU make from Git without installing appropriate maintainer's tools, such as GNU m4, automake, autoconf, Perl, GNU make, and GCC. See the README.git file for instructions on how to build GNU make once these tools are available. We make no guarantees about the contents or quality of the latest code in the Git repository: it is not unheard of for code that is known to be broken to be checked in. Use at your own risk. System-specific Notes --------------------- It has been reported that the XLC 1.2 compiler on AIX 3.2 is buggy such that if you compile make with 'cc -O' on AIX 3.2, it will not work correctly. It is said that using 'cc' without '-O' does work. The standard /bin/sh on SunOS 4.1.3_U1 and 4.1.4 is broken and cannot be used to configure GNU make. Please install a different shell such as bash or pdksh in order to run "configure". See this message for more information: http://mail.gnu.org/archive/html/bug-autoconf/2003-10/msg00190.html One area that is often a problem in configuration and porting is the code to check the system's current load average. To make it easier to test and debug this code, you can do 'make check-loadavg' to see if it works properly on your system. (You must run 'configure' beforehand, but you need not build Make itself to run this test.) Another potential source of porting problems is the support for large files (LFS) in configure for those operating systems that provide it. Please report any bugs that you find in this area. If you run into difficulties, then as a workaround you should be able to disable LFS by adding the '--disable-largefile' option to the 'configure' script. On systems that support micro- and nano-second timestamp values and where stat(2) provides this information, GNU make will use it when comparing timestamps to get the most accurate possible result. However, note that many current implementations of tools that *set* timestamps do not preserve micro- or nano-second granularity. This means that "cp -p" and other similar tools (tar, etc.) may not exactly duplicate timestamps with micro- and nano-second granularity on some systems. If your build system contains rules that depend on proper behavior of tools like "cp -p", you should consider using the .LOW_RESOLUTION_TIME pseudo-target to force make to treat them properly. See the manual for details. Ports ----- - See README.customs for details on integrating GNU make with the Customs distributed build environment from the Pmake distribution. - See README.VMS for details about GNU Make on OpenVMS. - See README.Amiga for details about GNU Make on AmigaDOS. - See README.W32 for details about GNU Make on Windows NT, 95, or 98. - See README.DOS for compilation instructions on MS-DOS and MS-Windows using DJGPP tools. A precompiled binary of the MSDOS port of GNU Make is available as part of DJGPP; see the WWW page http://www.delorie.com/djgpp/ for more information. The Cygwin project maintains its own port of GNU make. That port may have patches which are not present in this version. If you are using Cygwin you should use their version of GNU make, and if you have questions about it you should start by asking on those mailing lists and forums. Please note there are two _separate_ ports of GNU make for Microsoft systems: a native Windows tool built with (for example) MSVC or Cygwin, and a DOS-based tool built with DJGPP. Please be sure you are looking at the right README! ------------------------------------------------------------------------------- Copyright (C) 1988-2020 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/>.
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