README
1Copyright 2001 Free Software Foundation, Inc.
2
3This file is part of the GNU MP Library.
4
5This program is free software; you can redistribute it and/or modify it under
6the terms of the GNU General Public License as published by the Free Software
7Foundation; either version 3 of the License, or (at your option) any later
8version.
9
10This program is distributed in the hope that it will be useful, but WITHOUT ANY
11WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
14You should have received a copy of the GNU General Public License along with
15this program. If not, see http://www.gnu.org/licenses/.
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20 DEMONSTRATION CALCULATOR PROGRAM
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22
23This is a simple program, meant only to show one way to use GMP with yacc
24and lex to make a calculator. Usage and comments on the implementation can
25be found in calc.y.
26
27Within a GMP build tree, the generated Makefile can be used to build the
28program,
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30 make calc
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32(or on a DOS system, "make calc.exe").
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34Elsewhere, once GMP has been installed, the program can be compiled with for
35instance
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37 gcc calc.c calclex.c -lgmp -o calc
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39Or if GNU readline is used then
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41 gcc calc.c calclex.c calcread.c -lgmp -lreadline -o calc
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43(again, on a DOS system "-o calc.exe").
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45Readline support can be enabled or disabled in calc-config.h. That file is
46created by the GMP ./configure based on the --with-readline option. The
47default is --with-readline=detect, which means to use readline if available.
48"yes" can be used to force it to be used, or "no" to not use it.
49
50The supplied calc.c was generated by GNU bison, but a standard yacc should
51work too.
52
53The supplied calclex.c was generated by GNU flex, but a standard lex should
54work too. The readline support may or may not work with a standard lex (see
55comments with input() in calcread.c). Note also that a standard lex will
56require its library "-ll" on the compile command line. "./configure" sets
57this up in the GMP build tree Makefile.
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61----------------
62Local variables:
63mode: text
64fill-column: 76
65End:
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