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POStatic libraries and headers in another directories with GCC
 

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  1. POStatic libraries and headers in another directories with GCC
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    <p>I was looking <a href="http://segfault.in/2008/04/how-to-create-static-libraries-with-gcc/" rel="nofollow">here</a> how to do static libraries using GCC, and the explanation is pretty clear (despise the fact I had to rewrite the factorial function): I have a function (fact.c), the header of the function (fact.h), and the main function (main.c), all of them in my home directory. </p> <p><strong>fact.h</strong></p> <pre><code>int fact (int); </code></pre> <p><strong>fact.c</strong></p> <pre><code>int fact (int f) { if ( f == 0 ) return 1; else return (f * fact ( f - 1 )); } </code></pre> <p><strong>main.c</strong></p> <pre><code>#include &lt;stdio.h&gt; #include "fact.h" int main(int argc, char *argv[]) { printf("%d\n", fact(3)); return 0; } </code></pre> <p>So I had first to generate the object file (phase 1)...</p> <pre><code>$ gcc -c fact.c -o fact.o </code></pre> <p>...then to generate the static library (phase 2)...</p> <pre><code>$ ar rcs libfact.a fact.o </code></pre> <p>...later to do the static library linking process (phase 3)...</p> <pre><code>$ gcc -static main.c -L. -lfact -o fact </code></pre> <p>...and finally run the program (phase 4 and final)</p> <pre><code>$ ./fact </code></pre> <p>My question is the following. Let's suppose my program will be so big that I had no alternative than put the headers in a header directory (/include/fact.h) and the static libraries will also be in another directory (/lib/libfact.a). In that case, how the compilation and/or the code of this program will change? </p> <p><strong>Edit/Problem Solved</strong>: First, the main.c was corrected in order to include a header in another directory called include. Remember that, in this case, both of the .c files are in the main directory.</p> <p><strong>main.c</strong></p> <pre><code>#include &lt;stdio.h&gt; #include "include/fact.h" int main(int argc, char *argv[]) { printf("%d\n", fact(3)); return 0; } </code></pre> <p>Second, to generate the static library in another directory (phase 2), this is what I had done:</p> <pre><code>$ ar rcs lib/libfact.a fact.o </code></pre>
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