Failed to build gem native extension #7

jeremyjousse opened this Issue Jan 20, 2012 · 4 comments

3 participants



I'm trying to install tag lib-ruby on my Mac with Lion, ruby 1.9.2 installed with RVM and taglib installed with MacPorts.

After typing "gem install taglib-ruby" I have "Failed to build gem native extension".

This is the logs :

Building native extensions. This could take a while...
ERROR: Error installing taglib-ruby:
ERROR: Failed to build gem native extension.

    /Users/jerry/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb

checking for main() in -lstdc++... yes
checking for main() in -ltag... no
You must have taglib installed in order to use taglib-ruby.

Debian/Ubuntu: sudo apt-get install libtag1-dev
Fedora/RHEL: sudo yum install taglib-devel
Brew: brew install taglib
MacPorts: sudo port install taglib

*** 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:

Gem files will remain installed in /Users/jerry/.rvm/gems/ruby-1.9.2-p290/gems/taglib-ruby-0.3.0 for inspection.
Results logged to /Users/jerry/.rvm/gems/ruby-1.9.2-p290/gems/taglib-ruby-0.3.0/ext/taglib_base/gem_make.out

Can you help me to solve this problem?

Thanks a lot.


Mkmf probably can't find taglib. Do you know where MacPorts installs the library (e.g. where is include/taglib/taglib.h)? /usr/local, /opt/local, /sw?

If you know that, you can re-run the command like this:

CONFIGURE_ARGS="--with-opt-dir=/usr/local" gem install taglib-ruby

Hi Robinst,

Thank you it works perfactly with :
CONFIGURE_ARGS="--with-opt-dir=/opt/local/" gem install taglib-ruby

@rud1r055 rud1r055 added a commit to rud1r055/taglib-ruby that referenced this issue Jan 22, 2012
@robinst Default opt dirs in extconf to help mkmf find taglib (#7) c9706ee

Same issue when deploying on Heroku. Would I fix this by following the commands above?


Please open a new issue! Either you don't have taglib installed or extconf can't find it.

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