Cant install rmagick Gem On OSX - ruby

Question

What am I missing?
Heres my brew info for imagemagick
❯ brew info imagemagick
imagemagick: stable 7.0.7-22 (bottled), HEAD
Tools and libraries to manipulate images in many formats
https://www.imagemagick.org/
/usr/local/Cellar/imagemagick/7.0.7-22 (1,527 files, 23.3MB) *
Poured from bottle on 2018-02-15 at 15:36:50
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/imagemagick.rb
==> Dependencies
Build: pkg-config ✔
Required: libtool ✔, xz ✔
Recommended: jpeg ✔, libpng ✔, libtiff ✔, freetype ✔
Optional: fontconfig ✘, little-cms ✘, little-cms2 ✘, libwmf ✘, librsvg ✘, liblqr ✘, openexr ✘, ghostscript ✘, webp ✘, openjpeg ✘, fftw ✘, pango ✘, perl ✘
==> Requirements
Optional: x11 ✘
==> Options
--with-fftw
Compile with FFTW support
--with-fontconfig
Build with fontconfig support
--with-ghostscript
Build with ghostscript support
--with-hdri
Compile with HDRI support
--with-liblqr
Build with liblqr support
--with-librsvg
Build with librsvg support
--with-libwmf
Build with libwmf support
--with-little-cms
Build with little-cms support
--with-little-cms2
Build with little-cms2 support
--with-opencl
Compile with OpenCL support
--with-openexr
Build with openexr support
--with-openjpeg
Build with openjpeg support
--with-openmp
Compile with OpenMP support
--with-pango
Build with pango support
--with-perl
Compile with PerlMagick
--with-webp
Build with webp support
--with-x11
Build with x11 support
--with-zero-configuration
Disables depending on XML configuration files
--without-freetype
Build without freetype support
--without-jpeg
Build without jpeg support
--without-libpng
Build without libpng support
--without-libtiff
Build without libtiff support
--without-magick-plus-plus
disable build/install of Magick++
--without-modules
Disable support for dynamically loadable modules
--without-threads
Disable threads support
--HEAD
Install HEAD version
Heres my gem info when trying to install
❯ gem install rmagick -v '2.13.2'
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
current directory: /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/gems/rmagick-2.13.2/ext/RMagick
/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin/ruby -r ./siteconf20180215-65975-100ukqk.rb extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... no
Can't install RMagick 2.13.2. Can't find Magick-config in /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/bin:/Users/joshchernoff/.rvm/gems/ruby-2.3.1#global/bin:/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin:/Users/joshchernoff/.rvm/bin:/Users/joshchernoff/.asdf/bin:/Users/joshchernoff/.asdf/shims:.git/safe/../../bin:/Users/joshchernoff/.bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Postgres.app/Contents/Versions/latest/bin
*** 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=/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin/$(RUBY_BASE_NAME)
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/extensions/x86_64-darwin-17/2.3.0/rmagick-2.13.2/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/gems/rmagick-2.13.2 for inspection.
Log file
❯ cat /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/extensions/x86_64-darwin-17/2.3.0/rmagick-2.13.2/gem_make.out
current directory: /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/gems/rmagick-2.13.2/ext/RMagick
/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin/ruby -r ./siteconf20180215-65975-100ukqk.rb extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... no
Can't install RMagick 2.13.2. Can't find Magick-config in /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/bin:/Users/joshchernoff/.rvm/gems/ruby-2.3.1#global/bin:/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin:/Users/joshchernoff/.rvm/bin:/Users/joshchernoff/.asdf/bin:/Users/joshchernoff/.asdf/shims:.git/safe/../../bin:/Users/joshchernoff/.bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Postgres.app/Contents/Versions/latest/bin
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin/$(RUBY_BASE_NAME)
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/extensions/x86_64-darwin-17/2.3.0/rmagick-2.13.2/mkmf.log
extconf failed, exit code 1
mk file
❯ cat /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/extensions/x86_64-darwin-17/2.3.0/rmagick-2.13.2/mkmf.log
checking for Ruby version >= 1.8.5... -------------------- yes
--------------------
find_executable: checking for gcc... -------------------- yes
--------------------
find_executable: checking for Magick-config... -------------------- no
--------------------
Can't install RMagick 2.13.2. Can't find Magick-config in /Users/joshchernoff/.rvm/gems/ruby-2.3.1#impact-nw/bin:/Users/joshchernoff/.rvm/gems/ruby-2.3.1#global/bin:/Users/joshchernoff/.rvm/rubies/ruby-2.3.1/bin:/Users/joshchernoff/.rvm/bin:/Users/joshchernoff/.asdf/bin:/Users/joshchernoff/.asdf/shims:.git/safe/../../bin:/Users/joshchernoff/.bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Postgres.app/Contents/Versions/latest/bin

Answer 1

The log file states the error: Can't find Magick-config in [PATH].
So find the Magick-config file on your filesystem and put it in your path, e.g. by running
locate Magick-config
For me that returns:
/usr/local/Cellar/imagemagick#6/6.9.9-34/bin/Magick-config
If you cannot find the Magick-config file anywhere, then find out why you don't have one.
Even when you get past that error, you will still be unable to get rmagick to work since ImageMagick 7 is not yet supported.
Related Github issues:
https://github.com/rmagick/rmagick/issues/256
https://github.com/rmagick/rmagick/issues/265
https://github.com/rmagick/rmagick/issues/271
Also here's another StackOverflow Answer that explains how to get it to work: ImageMagick 7 with RMagick 2.16 on MacOS Sierra Can't find MagickWand.h