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This article is from the GNU Chess and XBoard FAQ, by Tim Mann mann@pa.dec.com with numerous contributions by others.

E.15 I get errors compiling XBoard's parser.c.

The file parser.c is automatically generated from parser.l. The copy
included with XBoard 4.0.2 was generated by lex on an Alpha running
Tru64 Unix (formerly Digital Unix). It won't necessarily work on other
versions of Unix; in particular, it seems to have a problem on current
Linux releases. You can fix this problem by deleting parser.c and
letting the Makefile re-create it from parser.l. This will work if you
have either lex or flex on your system. Flex is available in all Linux
distributions and can be obtained at no charge from the Free Software
Foundation, www.fsf.org.

 

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