<div dir="ltr"><div style="font-family:arial,sans-serif;font-size:13px">The conditional here:</div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><a href="https://github.com/Kitware/CMake/blob/master/Modules/CheckIncludeFiles.cmake#L42" target="_blank" style="font-family:arial,sans-serif;font-size:13px">https://github.com/Kitware/CMake/blob/master/Modules/CheckIncludeFiles.cmake#L42</a><br style="font-family:arial,sans-serif;font-size:13px">

<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">causes me issues when called with CMAKE_HAVE_PTHREAD_H in FindThreads. It evaluates to false, leaving pthread.h to not be found and FindThreads to fail.</div>

<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">What is the purpose of this conditional and why would it cause this FindThreads call to fail?</div>

<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">I am on OSX 10.9.2 with AppleClang using CMake 3.0.20140430 built from HEAD with Homebrew.</div>
<div style="font-family:arial,sans-serif;font-size:13px">
<br></div><div style="font-family:arial,sans-serif;font-size:13px">Cheers,<br>Jack</div></div>