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POerror: conflicting types for 'x'
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  1. POerror: conflicting types for 'x'
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    copied!<p>I am new to C, and I've read a number of posts trying to deal with this issue, and they all say that the error message:</p> <pre><code>error: conflicting types for 'x' </code></pre> <p>occurs because a function is used before it is declared. This is not (at least not in an obvious way) the case with my code.</p> <p>I have several files in my project:</p> <ul> <li><code>minty.c</code></li> <li><code>lexer.c</code></li> <li><code>lexer.h</code></li> <li><code>minty_util.c</code></li> <li><code>minty_util.h</code></li> </ul> <p>I compile <code>lexer.c</code> and <code>minty_util.c</code> with:</p> <pre><code>gcc -Wall -g -c lexer.c -o lexer.o gcc -Wall -g -c minty_util.c -o minty_util.o </code></pre> <p>and these both compile successfully. The error comes when I try to compile <code>minty.c</code>:</p> <pre><code>gcc -Wall -g minty.c lexer.o minty_util.o -o minty </code></pre> <p>At which point I get about 6 errors of the form given above (where <code>x</code> is a function name) for functions declared in <code>minty_util.h</code> and defined in <code>minty_util.c</code>. From what I have read, it may have something to do with the way each file <code>#includes</code> other files, so here are the includes for each file (the obvious stuff like <code>stdio.h</code> is omitted):</p> <ul> <li><code>minty.c</code> includes <code>minty_util.h</code> and <code>lexer.h</code></li> <li><code>lexer.c</code> includes <code>lexer.h</code></li> <li><code>lexer.h</code> includes <code>minty_util.h</code> (because it contains forward declarations using typedefs specified in <code>minty_util.h</code>)</li> <li><code>minty_util.c</code> includes <code>minty_util.h</code></li> <li><code>minty_util.h</code> does not include anything</li> </ul> <p>If anyone can shed any light on why I'm having this problem, it would be immensely appreciated, as I have been trying to figure this out for hours (should've posted earlier!).</p>
 

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