I've done research on this and I've been at it on my one computer for hours and hours.
I've installed RMagick on my Desktop computer about 3 weeks ago, and it was fairly complicated.
I don't remember the exact steps I took, and I'm really frustrated.
I've installed ImageMagick onto my machine in the directory C:\ImageMagick
I've installed the Development kit too for Ruby.
I've also put the rmagick-rmagick-v2-2-g564f157 into the proper gems folder in my C: It's in C:\Ruby22-x64\lib\ruby\gems\2.2.0\gems
I'm getting the following errors:
I will type: gem install rmagick -- '--with-opt-dir="c:\ImageMagick"'
and get the following errors:
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-opt-dir="c:\ImageMagick"'
This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
C:/Ruby22-x64/bin/ruby.exe -r ./siteconf20160326-6132-157vnes.rb extconf.rb
'--with-opt-dir="c:\ImageMagick"
checking for main() in -lCORE_RL_magick_... no
searching PATH for the ImageMagick library...
checking for main() in -lCORE_RL_magick_... no
checking for main() in -lCORE_RL_magick_... no
checking for main() in -lCORE_RL_magick_... no
Can't install RMagick 2.15.4.
Can't find the ImageMagick library.
Retry with '--with-opt-dir' option.
Usage: gem install rmagick -- '--with-opt-dir="[path to ImageMagick]"'
e.g.
gem install rmagick -- '--with-opt-dir="C:Program FilesImageMagick-6.9.1-
Q16"'
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby22-x64/bin/$(RUBY_BASE_NAME)
--with-CORE_RL_magick_lib
--without-CORE_RL_magick_lib
--with-CORE_RL_magick_lib
--without-CORE_RL_magick_lib
--with-CORE_RL_magick_lib
--without-CORE_RL_magick_lib
--with-CORE_RL_magick_lib
--without-CORE_RL_magick_lib
extconf failed, exit code 1
Gem files will remain installed in C:/Ruby22-x64/lib/ruby/gems/2.2.0
/gems/rmagick-2.15.4 for inspection.
Results logged to C:/Ruby22-x64/lib/ruby/gems/2.2.0/extensions/x64-mingw32/2.2.0/rmagick-2.15.4/gem_make.out
I'm so frustrated at this point. It worked on my Desktop computer, but won't work here. Any suggestions?