ImageMagick 7 with RMagick 2.16 on MacOS Sierra Can't find MagickWand.h

Question

I upgraded to imagemagick-7.0.4-3.sierra and now my previously installed RMagck 2.16 fails. I checked for MagicWand:

$ find /usr/local -name MagickWand.h /usr/local/Cellar/imagemagick/7.0.4-3/include/ImageMagick-7/MagickWand/MagickWand.h

So it seems to be there. Also I reinstalled and relinked pgk-config. Didn't help as well. Any ideas?

Solution 1

I have just encountered and solved this issue on a new Mac running Sierra. There seems to be no solution for ImageMagick 7 at this time.

1. Uninstall existing imagemagick if needed

2. Install version 6:

   brew install imagemagick@6

3. Since this is keg-only, you should then force-link it:

   brew link --force imagemagick@6

This installed imagemagick version 6.9.7-4 for me.

Afterwards, the gem then installed successfully. I am including the version numbers for future readers:

Installing rmagick 2.13.4 with native extensions

Solution 2

dyson's solution didn't quite work for me. I found that in addition to installing imagemagick@6, I also need to install pkg-config and then set PKG_CONFIG_PATH.

brew install imagemagick@6 pkg-config
PATH="/usr/local/opt/imagemagick@6/bin:$PATH" PKG_CONFIG_PATH=/usr/local/opt/imagemagick@6/lib/pkgconfig gem install rmagick -v '2.13.4'

Comments

[mmln]

I didnt find a solution for making rmagick to work with imagemagick v7, falling back to v6 works as described in this answer, thanks

[maxhm10]

You saved me so much frustration. Thank you!!

[Brian]

I found this 2 hours in. I want to throw my computer out a window.

[Daniel]

I opened an issue: github.com/rmagick/rmagick/issues/265 Let's see if they add this to the documentation.

[dyson returns]

Thanks @Daniel. You're a champ.

[Yunwei.W]

had to run echo 'export PATH="/usr/local/opt/imagemagick@6/bin:$PATH"' >> ~/.bash_profile after the above steps. hope it helps others.

[dyson returns]

@Yunwei.W Are you sure you uninstalled other versions of imagemagick and that you definitely force-linked it?

[utahtwo]

Thank you! Worked great on Sierra

[caleb531]

If you'd prefer not to load all of ImageMagick's binaries onto your PATH, you can also run export PKG_CONFIG_PATH=/usr/local/opt/imagemagick@6/lib/pkgconfig

[Peter H. Boling]

I needed both --force AND --overwrite: brew link --force --overwrite imagemagick@6 Otherwise this worked!

[Valdis]

I prefer this solution because I don't have to remove the global linking to the latest ImageMagick version.

[Rafał Cieślak]

@TheLazyLog I think the problem with other solutions is that they assume you have stuff like pkg-config installed – after some time of using homebrew, one will definitely wind up with pkg-config on their computer. I was setting up a fresh Mac so that assumption just wasn't true for me.