title: Unavailable to install Systemfonts packages in Bioconductor 3.12 (R 4.0.1)
body: <p>I recently upgraded R to 4.0.1. When i install a package for bioconductor, Systemfonts, the installation failed, and an information stated that it is because one package is not found</p>
  
  <pre><code>freetype2 was not found in the pkg-config search path. 
  perhaps you should add the directory containing `freetype2.pc' to the pkg_config_path environment 
  variable no package 'freetype2' found
  </code></pre>
  
  <p>when i try to install freetype2, it shows that freetype2 is not available to R 4.0.1.</p>
  
  <p>any one know what should i do?</p>