ImageMagick 6.7.3-7をソースからインストールした環境に、gemでRMagickをインストールしようとしたら、以下のエラーが発生した。
$ sudo gem install rmagick
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/opt/ruby-enterprise-1.8.7-2011.03/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... no
Can't install RMagick 2.13.1. Can't find MagickWand.h.
*** 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
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/opt/ruby-enterprise-1.8.7-2011.03/bin/ruby
Gem files will remain installed in /opt/ruby-enterprise-1.8.7-2011.03/lib/ruby/gems/1.8/gems/rmagick-2.13.1 for inspection.
Results logged to /opt/ruby-enterprise-1.8.7-2011.03/lib/ruby/gems/1.8/gems/rmagick-2.13.1/ext/RMagick/gem_make.out
ImageMagickは6.7.3-7をソースからインストールしている。
ImageMagick 6.6.9-10の場合は、Rmagickをインストールできた。
対処方法
エラーメッセージに、
Perhaps you should add the directory containing `MagickCore.pc' to the PKG_CONFIG_PATH environment variable
とあるので、MagickCore.pcが含まれているディレクトリを探して、PKG_CONFIG_PATHにセットするとインストールできた。
$ find /usr/local -name MagickCore.pc /usr/local/lib/pkgconfig/MagickCore.pc $ sudo PKG_CONFIG_PATH=/usr/local/lib/pkgconfig gem install rmagick Building native extensions. This could take a while... Successfully installed rmagick-2.13.1 1 gem installed Installing ri documentation for rmagick-2.13.1... Installing RDoc documentation for rmagick-2.13.1...