title: Doxygen docs installation fails due to EPSTOPDF-NOTFOUND error
body: <p>I'm trying to build the Doxygen documentation. I can get the html files to build and load properly in the borwser. However, the PDF files do not build properly.</p>
  
  <p>When I execute <code>make docs</code> (as stated in the Doxygen installation instructions), the following is the error output:</p>
  
  <pre><code>[ 37%] Built target _doxygen
  [ 38%] Built target md5
  [ 38%] Built target lodepng
  [ 45%] Built target mscgen
  [ 45%] Checking the git repository for changes...
  [ 45%] Built target check_git_repository
  [ 46%] Checking the doxygen version for changes...
  [ 46%] Built target check_doxygen_version
  [ 47%] Built target doxygen_version
  [ 55%] Built target qtools
  [ 55%] Built target generate_configvalues_header
  [ 57%] Built target vhdlparser
  [ 61%] Built target doxycfg
  [ 61%] Built target doxygen
  [ 85%] Built target examples
  [ 85%] Generating Latex and HTML documentation.
  [100%] Built target run_doxygen
  [100%] Generating Doxygen Manual PDF.
  /bin/sh: 1: EPSTOPDF-NOTFOUND: not found
  doc/CMakeFiles/doxygen_pdf.dir/build.make:57: recipe for target 'doc/CMakeFiles/doxygen_pdf' failed
  make[3]: *** [doc/CMakeFiles/doxygen_pdf] Error 127
  CMakeFiles/Makefile2:637: recipe for target 'doc/CMakeFiles/doxygen_pdf.dir/all' failed
  make[2]: *** [doc/CMakeFiles/doxygen_pdf.dir/all] Error 2
  CMakeFiles/Makefile2:671: recipe for target 'doc/CMakeFiles/docs.dir/rule' failed
  make[1]: *** [doc/CMakeFiles/docs.dir/rule] Error 2
  Makefile:379: recipe for target 'docs' failed
  make: *** [docs] Error 2
  </code></pre>
  
  <p>I have searched online extensively and installed all font packages I can find regarding the TexLive package, and I have installed the <code>pdflatex</code> package as well. </p>
  
  <p>Help is appreciated, thank you!</p>