title: Kallisto build keeps failing when attempting to link CXX executable
body: <p>I'm super new to coding in general so apologies for any lack of clarity or conciseness. I'm attempting to make a build for Kallisto to use in RNA sequence alignment and I'm getting stuck at the &quot;make&quot; stage. The cmake was successful after a little fiddling and downloading a CXX compiler, but the make keep exiting with an error status:</p>
  <pre><code>[ 27%] Built target htslib
  [ 93%] Built target kallisto_core
  [ 96%] Linking CXX executable kallisto
  /home/wahanson/miniconda3/bin/../lib/gcc/x86_64-conda_cos6-linux-gnu/7.3.0/../../../../x86_64-conda_cos6-linux-gnu/bin/ld: cannot find -lz
  collect2: error: ld returned 1 exit status
  make[2]: *** [src/CMakeFiles/kallisto.dir/build.make:88: src/kallisto] Error 1
  make[1]: *** [CMakeFiles/Makefile2:130: src/CMakeFiles/kallisto.dir/all] Error 2
  </code></pre>
  <p>the main error appears to be &quot;cannot find -lz&quot; causing the subsequent errors. From what I understand, this is referencing zlib1g-dev and/or an inability to find it within the path. I have installed zlib1g-dev through conda and made sure to update to no avail. If anyone could let me know what I'm missing or a next place to look it'd be much appreciated. Thanks!</p>