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[msp430-gcc.git] / gmp / demos / calc / 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.
+
+
+
+----------------
+Local variables:
+mode: text
+fill-column: 76
+End: