rmagickをインストールするとこのエラーが発生します。あらゆる種類のガイドに従っており、毎回同じエラーが発生します。今回はこのガイドに従いました:http ://www.youtube.com/watch?v = gEWAVlNCKhg&feature = youtu.be :
C:/Ruby192/bin/ruby.exe extconf.rb --with-opt-include=C:/ImageMagick/Sou
rceCode --with-opt-lib=C:/ImageMagick
checking for Ruby version >= 1.8.5... yes
*** 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
--without-opt-dir
--with-opt-include=${opt-dir}/include
--with-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby192/bin/ruby
extconf.rb:171:in ``': No such file or directory - convert -version (Errno::ENOE
NT)
from extconf.rb:171:in `<main>'
Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/rmagick-2
.13.1 for inspection.
Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/rmagick-2.13.1/ext/RMagick
/gem_make.out
c:\>