title: dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.21.dylib
body: <p>I'm trying to get set-up with QMK to write my own key maps for a Rama M6-c.</p>
  
  <p>When running <code>make wilba_tech/rama_works_m6_b:default</code>, which is also used for the Rama M6-c, I keep receiving the following message: </p>
  
  <blockquote>
    <p>dyld: Library not loaded: /usr/local/opt/isl/lib/libisl.21.dylib</p>
  </blockquote>
  
  <p>within my terminal. </p>
  
  <p>The error message is </p>
  
  <blockquote>
    <p>internal compiler error: Abort trap: 6 signal terminated program cc1.</p>
  </blockquote>
  
  <p>I've tried the suggested commands mentioned on <a href="https://docs.qmk.fm/#/faq_build?id=avr-gcc-internal-compiler-error-abort-trap-6-program-cc1-on-macos" rel="noreferrer">QMK's website</a> to no success.</p>
  
  <p>I've also tried upgrading homebrew, uninstalling homebrew, re-installing homebrew, fixing any warnings from homebrew's doctor command, re-running util/qmk_install.sh, upgrading node, and switching node versions.</p>
  
  <p>Has anyone else experienced this issue recently or have any suggestions/fixes?</p>
  
  <ul>
  <li>OS: macOS Catalina</li>
  <li>node: 12.14.0 (default set through NVM)</li>
  <li>device: Rama M6-c</li>
  </ul>