| Here are some steps to compile and install the php-wkhtmltox PHP extension.
The paths below are valid for most standard Centos/RH installations - you should check and adapt them according to your flavour of Linux.
On your server:
1) Download the wkhtmltopdf src package
  cd  /tmp
  wget  http://wkhtmltopdf.googlecode.com/files/wkhtmltopdf-0.11.0_rc1.tar.bz2
  bunzip2  wkhtmltopdf-0.11.0_rc1.tar.bz2
  tar  -xvf  wkhtmltopdf-0.11.0_rc1.tar
2) Download the pre-compiled libwkhtmltox static library
  cd  /tmp
  wget  http://wkhtmltopdf.googlecode.com/files/libwkhtmltox-0.11.0_rc1-i386.tar.bz2
  bunzip2  libwkhtmltox-0.11.0_rc1-i386.tar.bz2
  tar  -xvf  libwkhtmltox-0.11.0_rc1-i386.tar
3) Copy the library to your libraries directory (probably /usr/local/lib )
  cp  -v /tmp/lib/libwkhtmltox.so   /usr/local/lib
3) Copy the library headers to your headers directory (probably /usr/local/include )
  cp  -vR  /tmp/include/wkhtmltox  /usr/local/include/wkhtmltox
4) Download the PHP extension source
  cd  /tmp
  wget  --no-check-certificate  https://github.com/mreiferson/php-wkhtmltox/tarball/master  
  tar  -xvzf  master
5) Compile and install the extension
  cd  /tmp/mreiferson-php-wkhtmltox-fa6208e
  phpize 
  ./configure  --with-phpwkhtmltox=/tmp/wkhtmltopdf-0.11.0_rc1
  make
  make install
	
6) Edit your php.ini file to load the extension
  cp  /etc/php.ini  /etc/php.bak
  echo  "extension=phpwkhtmltox.so"  >> /etc/php.ini 
7) Reload your webserver and test
  apachectl  restart
- creates a test image file called  /tmp/test.jpg
  cd  /tmp/mreiferson-php-wkhtmltox-fa6208e
  php  test_image.php
- creates a test pdf files called  /tmp/test1.pdf
  cd  /tmp/mreiferson-php-wkhtmltox-fa6208e
  php  test_pdf.php
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