README
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- Copyright 2001 Free Software Foundation, Inc.
- This file is part of the GNU MP Library.
- This program 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.
- This program 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/.
- DEMONSTRATION CALCULATOR PROGRAM
- This is a simple program, meant only to show one way to use GMP with yacc
- and lex to make a calculator. Usage and comments on the implementation can
- be found in calc.y.
- Within a GMP build tree, the generated Makefile can be used to build the
- program,
- make calc
- (or on a DOS system, "make calc.exe").
- Elsewhere, once GMP has been installed, the program can be compiled with for
- instance
- gcc calc.c calclex.c -lgmp -o calc
- Or if GNU readline is used then
- gcc calc.c calclex.c calcread.c -lgmp -lreadline -o calc
- (again, on a DOS system "-o calc.exe").
- Readline support can be enabled or disabled in calc-config.h. That file is
- created by the GMP ./configure based on the --with-readline option. The
- default is --with-readline=detect, which means to use readline if available.
- "yes" can be used to force it to be used, or "no" to not use it.
- The supplied calc.c was generated by GNU bison, but a standard yacc should
- work too.
- The supplied calclex.c was generated by GNU flex, but a standard lex should
- work too. The readline support may or may not work with a standard lex (see
- comments with input() in calcread.c). Note also that a standard lex will
- require its library "-ll" on the compile command line. "./configure" sets
- this up in the GMP build tree Makefile.
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