title: ubuntu 12.04 install fontforge No package 'zlib' found
body: <p>1,when i try  ./configure
  it says:</p>
  
  <blockquote>
  <pre><code>checking for ZLIB... configure: error: Package requirements (zlib) were not met:
  
  No package 'zlib' found
  
  Consider adjusting the PKG_CONFIG_PATH environment variable if you
  installed software in a non-standard prefix.
  
  Alternatively, you may set the environment variables ZLIB_CFLAGS
  and ZLIB_LIBS to avoid the need to call pkg-config.
  See the pkg-config man page for more details.
  </code></pre>
  </blockquote>
  
  <p>2,and i try to install zlib use aptitude it says</p>
  
  <blockquote>
  <pre><code>packages contain "zlib" in their name:
    libio-compress-zlib-perl libcompress-raw-zlib-perl libcompress-zlib-perl 
    gambas2-gb-compress-zlib libghc6-zlib-dev libghc6-zlib-doc libzlib-ruby 
    zlibc zlib-bin libghc6-zlib-prof zlib-gst gambas2-gb-compress-bzlib2 
    haskell-zlib-doc libio-zlib-perl zlib1g-dbg zlib1g-dev 
    libghc6-zlib-prof-0.5.2.0-b96bd zlib1g libzlib-ruby1.8 libjzlib-java 
    libghc6-zlib-dev-0.5.2.0-b96bd 
  No packages will be installed, upgraded, or removed.
  0 packages upgraded, 0 newly installed, 0 to remove and 69 not upgraded.
  Need to get 0B of archives. After unpacking 0B will be used.
  Writing extended state information... Done
  Reading package lists... Done             
  Building dependency tree       
  Reading state information... Done
  Reading extended state information       
  Initializing package states... Done
  </code></pre>
  </blockquote>
  
  <p>3,finally i installed zlib1g but the fontforge configure can't find zlib too
  dpkg -l zlib1g</p>
  
  <blockquote>
  <pre><code>Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name           Version        Description
  +++-==============-==============-============================================
  ii  zlib1g         1:1.2.3.3.dfsg compression library - runtime
  </code></pre>
  </blockquote>
  
  <p>is it need to config  environment variables ZLIB_CFLAGS and ZLIB_LIBS
  how to ?</p>