67 lines
2.1 KiB
Plaintext
67 lines
2.1 KiB
Plaintext
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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DEMONSTRATION CALCULATOR PROGRAM
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This is a simple program, meant only to show one way to use GMP with yacc
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and lex to make a calculator. Usage and comments on the implementation can
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be found in calc.y.
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Within a GMP build tree, the generated Makefile can be used to build the
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program,
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make calc
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(or on a DOS system, "make calc.exe").
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Elsewhere, once GMP has been installed, the program can be compiled with for
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instance
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gcc calc.c calclex.c -lgmp -o calc
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Or if GNU readline is used then
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gcc calc.c calclex.c calcread.c -lgmp -lreadline -o calc
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(again, on a DOS system "-o calc.exe").
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Readline support can be enabled or disabled in calc-config.h. That file is
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created by the GMP ./configure based on the --with-readline option. The
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default is --with-readline=detect, which means to use readline if available.
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"yes" can be used to force it to be used, or "no" to not use it.
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The supplied calc.c was generated by GNU bison, but a standard yacc should
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work too.
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The supplied calclex.c was generated by GNU flex, but a standard lex should
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work too. The readline support may or may not work with a standard lex (see
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comments with input() in calcread.c). Note also that a standard lex will
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require its library "-ll" on the compile command line. "./configure" sets
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this up in the GMP build tree Makefile.
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----------------
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Local variables:
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mode: text
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fill-column: 76
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End:
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