README (3919B)
1 /* $OpenBSD: README,v 1.7 2011/09/28 19:27:18 millert Exp $ */ 2 /**************************************************************** 3 Copyright (C) Lucent Technologies 1997 4 All Rights Reserved 5 6 Permission to use, copy, modify, and distribute this software and 7 its documentation for any purpose and without fee is hereby 8 granted, provided that the above copyright notice appear in all 9 copies and that both that the copyright notice and this 10 permission notice and warranty disclaimer appear in supporting 11 documentation, and that the name Lucent Technologies or any of 12 its entities not be used in advertising or publicity pertaining 13 to distribution of the software without specific, written prior 14 permission. 15 16 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 17 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 18 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 19 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 21 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 22 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 23 THIS SOFTWARE. 24 ****************************************************************/ 25 26 This is the version of awk described in "The AWK Programming Language", 27 by Al Aho, Brian Kernighan, and Peter Weinberger 28 (Addison-Wesley, 1988, ISBN 0-201-07981-X). 29 30 Changes, mostly bug fixes and occasional enhancements, are listed 31 in FIXES. If you distribute this code further, please please please 32 distribute FIXES with it. If you find errors, please report them 33 to bwk@cs.princeton.edu. Thanks. 34 35 The program itself is created by 36 make 37 which should produce a sequence of messages roughly like this: 38 39 yacc -d awkgram.y 40 41 conflicts: 43 shift/reduce, 85 reduce/reduce 42 mv y.tab.c ytab.c 43 mv y.tab.h ytab.h 44 cc -c ytab.c 45 cc -c b.c 46 cc -c main.c 47 cc -c parse.c 48 cc maketab.c -o maketab 49 ./maketab >proctab.c 50 cc -c proctab.c 51 cc -c tran.c 52 cc -c lib.c 53 cc -c run.c 54 cc -c lex.c 55 cc ytab.o b.o main.o parse.o proctab.o tran.o lib.o run.o lex.o -lm 56 57 This produces an executable a.out; you will eventually want to 58 move this to some place like /usr/bin/awk. 59 60 If your system does not have yacc or bison (the GNU 61 equivalent), you must compile the pieces manually. We have 62 included yacc output in ytab.c and ytab.h, and backup copies in 63 case you overwrite them. We have also included a copy of 64 proctab.c so you do not need to run maketab. 65 66 NOTE: This version uses ANSI C, as you should also. We have 67 compiled this without any changes using gcc -Wall and/or local C 68 compilers on a variety of systems, but new systems or compilers 69 may raise some new complaint; reports of difficulties are 70 welcome. 71 72 This also compiles with Visual C++ on all flavors of Windows, 73 *if* you provide versions of popen and pclose. The file 74 missing95.c contains versions that can be used to get started 75 with, though the underlying support has mysterious properties, 76 the symptom of which can be truncated pipe output. Beware. The 77 file makefile.win gives hints on how to proceed; if you run 78 vcvars32.bat, it will set up necessary paths and parameters so 79 you can subsequently run nmake -f makefile.win. Beware also that 80 when running on Windows under command.com, various quoting 81 conventions are different from Unix systems: single quotes won't 82 work around arguments, and various characters like % are 83 interpreted within double quotes. 84 85 This compiles without change on Macintosh OS X using gcc and 86 the standard developer tools. 87 88 This is also said to compile on Macintosh OS 9 systems, using the 89 file "buildmac" provided by Dan Allen (danallen@microsoft.com), 90 to whom many thanks. 91 92 The version of malloc that comes with some systems is sometimes 93 astonishly slow. If awk seems slow, you might try fixing that. 94 More generally, turning on optimization can significantly improve 95 awk's speed, perhaps by 1/3 for highest levels.