Trust me when I tell you I've read each and every single thing on Stack related to this question (I know a few others have asked this).
OS: Ubuntu 10.04 Ruby: 1.8.7
I installed the latest build of ImageMagick by following their guidelines. I had a couple of problems, but was able to solve them and ultimately managed to get the 'test' command to spit out the correct result (i.e. convert logo: filename.png -- which successfully changed the png file I gave it into a logo of ImageMagick, thus affirming that ImageMagick is installed correctly).
Now when I do sudo gem install rmagick I get the following result:
Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb extconf.rb:1:in `require': no such file to load -- mkmf (LoadError) from extconf.rb:1
Gem files will remain installed in /var/lib/gems/1.8/gems/rmagick-2.13.1 for inspection. Results logged to /var/lib/gems/1.8/gems/rmagick-2.13.1/ext/RMagick/gem_make.out
Would be eternally grateful for some assistance on this.
Thank you.
I managed to solve the problem, finally.
I added this to my .bashrc file (to pick-up MagickCore.pc):
export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
I then created two symlinks:
ln -s /usr/local/include/ImageMagick/wand /usr/local/include/wand ln -s
/usr/local/include/ImageMagick/magick /usr/local/include/magick
After this I was able to install rmagick by simply typing gem install rmagick.
Hope this helps someone.
Cheers.