# Missing headers to build dl

**URL:** <https://www.ruby-forum.com/t/missing-headers-to-build-dl/129943>\
**Category:** Ruby\
**Created:** [February 22, 2008, 10:36pm UTC](https://www.ruby-forum.com/t/missing-headers-to-build-dl/129943 "2008-02-22T22:36:29Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Neal\_Reid](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/76d3ee/32.png) [@Neal\_Reid](https://www.ruby-forum.com/u/Neal_Reid)\
**Post date:** [February 22, 2008, 10:36pm UTC](https://www.ruby-forum.com/t/missing-headers-to-build-dl/129943/1 "2008-02-22T22:36:29Z")

</div>

I have all of ruby 1.8.4 running on my OS 10.2.8 mac - nearly…

When I try running extcon.rb in the ext/dl results in  
checking for windows.h… no  
checking for dlfcn.h… no  
so of course the bundle is never built.

Search high, search low, search other macs, I cannot find the  
correct header files (i.e. the windows.h file is not the one found  
in XP)

I tried, just for jollies, installing the dl.bundle from a 10.4  
machine - but the libraries (not too surprisingly) don’t line up.

Anybody know where I might find these 2 header files?