rmagick のインストールがしたかった。 bundle コマンドで rmagick を入れようとすると、下のようなエラーが出る。
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
current directory: /usr/local/lib/ruby/gems/2.4.0/gems/rmagick-2.16.0/ext/RMagick
/usr/local/opt/ruby/bin/ruby -r ./siteconf20170629-84148-1e6a7u1.rb extconf.rb
checking for clang... yes
checking for Magick-config... no
checking for pkg-config... yes
checking for outdated ImageMagick version (<= 6.4.9)... no
checking for presence of MagickWand API (ImageMagick version >= 6.9.0)... no
checking for Ruby version >= 1.8.5... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... no
Can't install RMagick 2.16.0. 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
--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=/usr/local/Cellar/ruby/2.4.1_1/bin/$(RUBY_BASE_NAME)
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/rmagick-2.16.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /usr/local/lib/ruby/gems/2.4.0/gems/rmagick-2.16.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/rmagick-2.16.0/gem_make.out
結論をいうと、RMagick 2.16.0 では、 ImageMagick 7 に対応していないので、
古いバージョンもインストールすることで解決した。
$ brew install imagemagick@6 $ export PKG_CONFIG_PATH=/usr/local/Cellar/imagemagick@6/6.9.8-10/lib/pkgconfig/ $ bundle
