Missing development tools when installing 0.6.2 on OS X and Homebrew libmagic

[scarver2]

gem install ruby-filemagic fails. Tried the usual trick of env ARCHFLAGS="-arch x86_64" gem install ruby-filemagic -- --with-magic-include=/usr/local/include --with-magic-lib=/usr/local/lib/ to no avail.

Confirmed that libmagic.1.dylib and libmagic.dylib are in /usr/local/lib/. What other dependencies does this gem have?

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

/Users/me/.rvm/rubies/ruby-2.2.0/bin/ruby -r ./siteconf20150206-87002-kyeyoq.rb extconf.rb

checking for main() in -lgnurx... * 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/me/.rvm/rubies/ruby-2.2.0/bin/$(RUBY_BASE_NAME) --with-magic-dir --without-magic-dir --with-magic-include --without-magic-include=${magic-dir}/include --with-magic-lib --without-magic-lib=${magic-dir}/lib --with-gnurx-dir --without-gnurx-dir --with-gnurx-include --without-gnurx-include=${gnurx-dir}/include --with-gnurx-lib --without-gnurx-lib=${gnurx-dir}/lib --with-gnurxlib --without-gnurxlib /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:456:in try_do': The compiler failed to generate an executable file. (RuntimeError) You have to install development tools first. from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:541:intry_link0' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:556:in try_link' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:741:intry_func' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:972:in block in have_library' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:917:inblock in checking_for' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:351:in block (2 levels) in postpone' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:321:inopen' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:351:in block in postpone' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:321:inopen' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:347:in postpone' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:916:inchecking_for' from /Users/me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/mkmf.rb:967:in have_library' from extconf.rb:9:in

'

extconf failed, exit code 1

Gem files will remain installed in /Users/me/.rvm/gems/ruby-2.2.0/gems/ruby-filemagic-0.6.2 for inspection. Results logged to /Users/me/.rvm/gems/ruby-2.2.0/extensions/x86_64-darwin-14/2.2.0/ruby-filemagic-0.6.2/gem_make.out

[blackwinter]

Due to #10 it also has a (soft) dependency on libgnurx now. Although I don't see why that would cause your error. Could you show me the mkmf.log file? (Gist or e-mail preferred) Could you try to compile without this line? (Unfortunately, I don't have an OS X environment to test on)

[blackwinter]

Are you sure your system is prepared to install extension gems at all? The note "You have to install development tools first" seems to indicate otherwise.

To compile the gem: Change to /Users/me/.rvm/gems/ruby-2.2.0/extensions/x86_64-darwin-14/2.2.0/ruby-filemagic-0.6.2 and run /Users/me/.rvm/rubies/ruby-2.2.0/bin/ruby -r ./siteconf20150206-87002-kyeyoq.rb extconf.rb to generate the Makefile. If that succeeds you can run make to compile.

One more thought to exclude the newly released version as the culprit: Can you install version 0.6.1? (gem install ruby-filemagic -v 0.6.1)

[scarver2]

Here is the mkmf.log for 0.6.2 https://gist.github.com/scarver2/984dc271202ec2207302

0.6.1 installs without issue.

The folder /Users/me/.rvm/gems/ruby-2.2.0/extensions/x86_64-darwin-14/2.2.0/ruby-filemagic-0.6.2 only contains gem_make.out and mkmf.log. No other files present.

[scarver2]

I forked 0.6.2 repo and issued a gem build ruby-filemagic.gemspec. It yielded this error: WARNING: See http://guides.rubygems.org/specification-reference/ for help ERROR: While executing gem ... (Gem::InvalidSpecificationException) ["lib/filemagic/magic.mgc"] are not files

Does this help?

[blackwinter]

clang: error: unsupported option '-static-libgcc'

Thanks, that line from mkmf.log says it all. Now we only need to find a way to avoid it.

The folder /Users/me/.rvm/gems/ruby-2.2.0/extensions/x86_64-darwin-14/2.2.0/ruby-filemagic-0.6.2 only contains gem_make.out and mkmf.log. No other files present.

Oh, I'm sorry, it should be /Users/me/.rvm/gems/ruby-2.2.0/gems/ruby-filemagic-0.6.2/ext/filemagic. And instead of removing this line I'd ask you to replace this line with:

$LDFLAGS << ' -static-libgcc' if RUBY_PLATFORM =~ /cygwin|mingw|mswin/

Does this help?

No, this only says that it can't find a particular file - which is dynamically generated during packaging.

[scarver2]

That worked on OSX Yosemite. Testing on Windows now. Will report back ASAP.

[blackwinter]

Excellent! I've pushed the fix and will release a new version now. Thank you very much.

Testing on Windows now.

Let me stop you right there ;) Compiling on Windows is a tad more involved. That's what prompted this change in the first place (see #10).

[scarver2]

Thank you for the fast response and resolution. A pleasure to work with you.