问题
I am already completely desperate - I spent whole day with trying to install rmagick gem to Mac OS X Lion, but literally it's a tragedy.
I saw many similar threads on Google, but nothing has helped me.
I tried completely uninstall imagemagick via brew and install it again (this is working well) and then to install the rmagick, but every time when I try to install this gem, I receive this error:
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/Users/adam/.rvm/rubies/ruby-1.9.3-p327/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
extconf.rb:128: Use RbConfig instead of obsolete and deprecated Config.
checking for clang... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... yes
checking for InitializeMagick() in -lMagickCore... no
checking for InitializeMagick() in -lMagick... no
checking for InitializeMagick() in -lMagick++... no
Can't install RMagick 2.13.1. Can't find the ImageMagick library or one of the dependent libraries. Check the mkmf.log file for more detailed information.
*** 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/adam/.rvm/rubies/ruby-1.9.3-p327/bin/ruby
--with-MagickCorelib
--without-MagickCorelib
--with-Magicklib
--without-Magicklib
--with-Magick++lib
--without-Magick++lib
Gem files will remain installed in /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1 for inspection.
Results logged to /Users/adam/.rvm/gems/ruby-1.9.3-p327/gems/rmagick-2.13.1/ext/RMagick/gem_make.out
Doesn't matter if I will install the gem through Gemfile or through Terminal, in both cases I get the same error output.
This is the version of imagemagick: imagemagick-6.8.0-10.
Could you give me please some tips or advance, where could be the issue? Thank you so much!
回答1:
rmagick has a problem working with imagemagick (>= 6.8.0-10) from homebrew.
You can either
update rmagick gem by
bundle update rmagick
or manually symbol link some dylib to make it work:
$ cd "`Magick-config --prefix`lib"
$ ln -s libMagick++-Q16.7.dylib libMagick++.dylib
$ ln -s libMagickCore-Q16.7.dylib libMagickCore.dylib
$ ln -s libMagickWand-Q16.7.dylib libMagickWand.dylib
After that gem install rmagick should work.
Check the discussion about this in homebrew/issues/16625
Update: Thanks @faraz for the nice one-liner command:
cd "`Magick-config --prefix`/lib"; ln -s libMagick++-Q8.7.dylib libMagick++.dylib; ln -s libMagickCore-Q8.7.dylib libMagickCore.dylib; ln -s libMagickWand-Q8.7.dylib libMagickWand.dylib
回答2:
Mac OSX Sierra & Rails 5
brew unlink imagemagick
brew install imagemagick@6
brew link imagemagick@6 --force
回答3:
I had the same problem.
If you check the mkmf.log, you'll see the following error message:
ld: library not found for -lgomp
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */\
Here is how I solved it:
Uninstall current version of ImageMagick:
brew uninstall imagemagickReinstall imagemagick without openmp support (this is the library responsible for lgomp):
brew install imagemagick --disable-openmpInstall rmagick:
gem install rmagick
Thats it!
回答4:
If you are using homebrew you just need to set the PKG_CONFIG_PATH
brew install imagemagick
PKG_CONFIG_PATH=/usr/local/Cellar/imagemagick//6.8.9-1/lib/pkgconfig/ gem install rmagick
回答5:
Try installing version 6.7.7-6 of imagemagick since version 6.8.x breaks the rmagick gem.
cd /usr/local
git checkout 7d951fb /usr/local/Library/Formula/imagemagick.rb
brew install imagemagick
回答6:
As of 2017, all solutions suggested above not seem to work anymore, since ever Homebrew switched to ImageMagick 7.0.
Some workarounds provided here. https://github.com/rmagick/rmagick/issues/256
I just downgraded to ImageMagick 6.9.7-3 and gem install rmagick worked fine.
回答7:
I am using this one-liner when I have issues with installing rmagick, which happens every time...
sudo C_INCLUDE_PATH=/usr/local/Cellar/imagemagick/6.8.7-7/include/ImageMagick-6/ PKG_CONFIG_PATH=/usr/local/Cellar/imagemagick/6.8.7-7/lib/pkgconfig/ gem install rmagick
Make sure the version of imagemagick is correct, and you should be good to go. If you don't have imagemagick installed, do a brew install imagemagick.
Had to post this because I keep having issues installing this gem, and every time I forget how to do it.
回答8:
After you installed imagemagick, can you try
> gem pristine rmagick
Got it from this thread. Rails Rmagick gem. Hope it helps.
回答9:
Alternatively you can drop back to an older version of ImageMagick. This thread has instructions on how to do it:
Now, to try and actually be useful I recommend you extract one of the older bottles into your Cellar and then do brew link imagemagick if you uninstalled the old version.
They are available here: http://sourceforge.net/projects/machomebrew/files/Bottles/imagemagick-6.7.7-6.snowleopard.bottle.3.tar.gz/download http://sourceforge.net/projects/machomebrew/files/Bottles/imagemagick-6.7.7-6.lion.bottle.3.tar.gz/download http://sourceforge.net/projects/machomebrew/files/Bottles/imagemagick-6.7.7-6.mountainlion.bottle.3.tar.gz/download
回答10:
This is the fix for High Sierra, Mojave and Catalina,
brew uninstall imagemagick
brew install imagemagick@6export PATH="/usr/local/opt/imagemagick@6/bin:$PATH"
brew link --force imagemagick@6
gem install rmagick
Source: https://blog.francium.tech/installing-rmagick-on-osx-high-sierra-7ea71f57390d
来源：https://stackoverflow.com/questions/13963404/rails-and-os-x-how-to-install-rmagick