Ruby
ImageMagick
MacOSX
Gem
RMagick

Mac にRMagick がインストールできなかったのを解決したメモ

More than 1 year has passed since last update.

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OS
macOS Sierra 10.12.4


bundle_install

$ bundle install

(略)

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /Users/xxxx/vendor/bundle/ruby/2.3.0/gems/rmagick-2.15.4/ext/RMagick
/Users/xxxx/.rbenv/versions/2.3.1/bin/ruby -r ./siteconf20170418-5047-90k3lz.rb extconf.rb
checking for clang... yes
checking for Magick-config... no
checking for pkg-config... 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
checking for outdated ImageMagick version (<= 6.4.9)... *** 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=/Users/xxxx/.rbenv/versions/2.3.1/bin/$(RUBY_BASE_NAME)

To see why this extension failed to compile, please check the mkmf.log which can be found here:

/Users/xxxx/vendor/bundle/ruby/2.3.0/extensions/x86_64-darwin-16/2.3.0-static/rmagick-2.15.4/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/xxxx/vendor/bundle/ruby/2.3.0/gems/rmagick-2.15.4 for inspection.
Results logged to /Users/xxxx/vendor/bundle/ruby/2.3.0/extensions/x86_64-darwin-16/2.3.0-static/rmagick-2.15.4/gem_make.out

An error occurred while installing rmagick (2.15.4), and Bundler cannot continue.
Make sure that `gem install rmagick -v '2.15.4'` succeeds before bundling.
$


gem install rmagick -v '2.15.4' をしろって書いてあるのでやってみる

$ sudo gem install rmagick -v '2.15.4'

Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.

current directory: /Users/xxxx/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rmagick-2.15.4/ext/RMagick
/Users/xxxx/.rbenv/versions/2.3.1/bin/ruby -r ./siteconf20170418-10432-2mfpv1.rb extconf.rb
checking for clang... yes
checking for Magick-config... no
checking for pkg-config... 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
checking for outdated ImageMagick version (<= 6.4.9)... *** 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=/Users/xxxx/.rbenv/versions/2.3.1/bin/$(RUBY_BASE_NAME)

To see why this extension failed to compile, please check the mkmf.log which can be found here:

/Users/xxxx/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/extensions/x86_64-darwin-16/2.3.0-static/rmagick-2.15.4/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/xxxx/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rmagick-2.15.4 for inspection.
Results logged to /Users/xxxx/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/extensions/x86_64-darwin-16/2.3.0-static/rmagick-2.15.4/gem_make.out
$

MagickCore.pc がないとのことなので、 ImageMagick を入れる。

brew install imagemagick をしようとしたが、 RMagick の 2.15 とかは、どうやら 7 系ではダメらしいので、6系の最新を入れたい


バージョンを検索

$ brew search imagemagick # 右の方に @6 が出てくる

imagemagick imagemagick@6
$


install

$ brew install imagemagick@6

==> Downloading https://homebrew.bintray.com/bottles/imagemagick@6-6.9.8-3.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring imagemagick@6-6.9.8-3.sierra.bottle.tar.gz
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local.

This is an alternate version of another formula.

If you need to have this software first in your PATH run:
echo 'export PATH="/usr/local/opt/imagemagick@6/bin:$PATH"' >> ~/.bash_profile

For compilers to find this software you may need to set:
LDFLAGS: -L/usr/local/opt/imagemagick@6/lib
CPPFLAGS: -I/usr/local/opt/imagemagick@6/include
For pkg-config to find this software you may need to set:
PKG_CONFIG_PATH: /usr/local/opt/imagemagick@6/lib/pkgconfig

==> Summary
:beer: /usr/local/Cellar/imagemagick@6/6.9.8-3: 1,469 files, 22.6MB
$


でも結果が変わらない

brew install の結果を見るに、 /usr/local/Cellar/imagemagick@6/6.9.8-3/lib/pkgconfig にありそう


lsしてみる

$ ls /usr/local/Cellar/imagemagick@6/6.9.8-3/lib/pkgconfig

ImageMagick++-6.Q16.pc ImageMagick-6.Q16.pc Magick++-6.Q16.pc MagickCore-6.Q16.pc MagickWand-6.Q16.pc Wand-6.Q16.pc
ImageMagick++.pc ImageMagick.pc Magick++.pc MagickCore.pc MagickWand.pc Wand.pc
$

MagickCore あった!


パスを環境変数PKG_CONFIG_PATHに設定

$ echo "export PKG_CONFIG_PATH=/usr/local/Cellar/imagemagick@6/6.9.8-3/lib/pkgconfig" >> ~/.bash_profile

$ source ~/.bash_profile
$


確認

$ echo $PKG_CONFIG_PATH

/usr/local/Cellar/imagemagick@6/6.9.8-3/lib/pkgconfig
$ ls $(echo $PKG_CONFIG_PATH)
ImageMagick++-6.Q16.pc ImageMagick-6.Q16.pc Magick++-6.Q16.pc MagickCore-6.Q16.pc MagickWand-6.Q16.pc Wand-6.Q16.pc
ImageMagick++.pc ImageMagick.pc Magick++.pc MagickCore.pc MagickWand.pc Wand.pc
$

これで設定できたので、 sudo に環境変数を引き継ぐように -E をつけてインストール


install

$ sudo -E gem install rmagick -v '2.15.4'

Building native extensions. This could take a while...
Successfully installed rmagick-2.15.4
Parsing documentation for rmagick-2.15.4
Installing ri documentation for rmagick-2.15.4
Done installing documentation for rmagick after 5 seconds
1 gem installed
$