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Install libmagic on Mac OS X via homebrew
$ brew install libmagic
$ brew link libmagic (if the link is already created is going to fail, don't worry about that)
$ env ARCHFLAGS="-arch x86_64" gem install ruby-filemagic -- --with-magic-include=/usr/local/include --with-magic-lib=/usr/local/lib/
@komalkishorvohra
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komalkishorvohra commented May 4, 2016

for a specific version (0.6.3)

env ARCHFLAGS="-arch x86_64" gem install -v 0.6.3 ruby-filemagic -- --with-magic-include=/usr/local/include --with-magic-lib=/usr/local/lib/`

@DanielWFrancis
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DanielWFrancis commented Sep 14, 2018

you're great :)

@FreezzzFrank
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FreezzzFrank commented Nov 2, 2018

ths a lot!!

@zubairshokh
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zubairshokh commented Dec 21, 2018

even after installing libmagic, not able to find the file.

#include <Magick++.h>
         ^~~~~~~~~~~~
1 error generated.
make: *** [cpp/src/hash.d] Error 1

@yotamaz
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yotamaz commented Feb 9, 2019

Awesome. Thank you!

@abavisani
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abavisani commented Feb 22, 2019

what is required Mac OS version to install libmagic? I have 10.11 and received the following error when tried $ brew install libmagic:

curl: (7) Failed to connect to ftp.astron.com port 21: Connection refused
Error: An exception occurred within a child process:
DownloadError: Failed to download resource "libmagic"
Download failed: ftp://ftp.astron.com/pub/file/file-5.36.tar.gz

@alfredrumss
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alfredrumss commented Apr 10, 2019

Awesome. Thanks for this!

@wzehui
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wzehui commented Apr 15, 2019

bingo! Thanks!

@mane-sandeep
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mane-sandeep commented Jun 8, 2019

+1

@jdieg0
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jdieg0 commented Aug 7, 2019

Perfect. Thanks! brew install libmagic did it.

@amirasaran
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amirasaran commented Sep 29, 2019

Awesome thanks.

@tatarurzvn
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tatarurzvn commented Feb 28, 2020

Thank you 🌮 Saved my day

@Shellbye
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Shellbye commented Apr 22, 2020

Work like a charm

@sksankarraj
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sksankarraj commented May 24, 2020

Thanks man!

@d-kahara
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d-kahara commented Jun 5, 2020

Thanks!! 👍🏾

@chuaweijie
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chuaweijie commented Jun 21, 2020

Thank you very much!

@remino
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remino commented Jul 14, 2021

On macOS Big Sur 11.4, I had to do the following instead of the last line above:

gem install ruby-filemagic -v '0.7.2' --source 'https://rubygems.org/' -- --with-magic-include=/opt/homebrew/include --with-magic-lib=/opt/homebrew/lib/

@uvaist1997
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uvaist1997 commented Aug 17, 2021

thanks

@kwilczynski
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kwilczynski commented Aug 3, 2022

If folks that come here have issues with the also excellent ruby-filemagic Ruby Gem, there exists ruby-magic Ruby Gem too, which has a bit more active development.

One can install it as a pre-built (native) Ruby Gem or as usual, in which case it should use bundled libmagic (as an alternative for requiring a system-wide or external one present).

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