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POPerl: how can I put all my inline C code into a separate file?
 

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  1. POPerl: how can I put all my inline C code into a separate file?
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    <p>This problem is so simple I can feel the RTFM's coming. However, I've been looking at the docs (<a href="http://search.cpan.org/perldoc?Inline" rel="nofollow noreferrer">Inline</a>, <a href="http://search.cpan.org/perldoc?Inline::C" rel="nofollow noreferrer">Inline-C</a>, <a href="http://search.cpan.org/perldoc?Inline::C-Cookbook" rel="nofollow noreferrer">Inline-C-Cookbook</a> ) all morning and I can't figure out how to solve this problem.</p> <p>I want to use inline C, but I don't want to have C code in the same file as my perl code. </p> <p>(Emacs doesn't like having two languages in one file. In principle this is a matter of convenience, but in practice I'm having to edit my C in one file then copy-paste it into my perl script.)</p> <p>Here is working perl:</p> <pre><code>#!/usr/bin/perl use Inline C =&gt; DATA; use strict; use warnings; use List::Util qw(sum); use feature qw(say); my @array = (1..10); say "native perl: ", sum(@array), ", Inline C: ", sum1(\@array); __END__ __C__ double sum1(AV* array) { int i; double sum = 0.0; for (i=0; i&lt;=av_len(array); i++) { SV** elem = av_fetch(array, i, 0); if (elem != NULL) sum += SvNV(*elem); } return sum; } </code></pre> <p>(thanks to <a href="https://stackoverflow.com/questions/1503763/how-can-i-pass-an-array-to-a-c-function-in-perl-xs">mobrule</a> for getting me this far.)</p> <p>I want to move all of the C code (or as much as possible) into a separate header file. </p> <p>What I can do is put <code>sum1</code> into a header, and do this:</p> <pre><code># same perl as above except now say sum2 instead of sum1 __END__ __C__ #include "sum.h" double sum2(AV* array) { sum1(array); } </code></pre> <p>This is good enough as I no longer have to edit the C in perl-mode, but I wonder if there isn't a more elegant solution to this problem?</p>
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    1. COThat looks pretty elegant.
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    2. CO@Pedro Silva eye of the beholder and all that. just seems a bit redundant to me.
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