after ruby upgrade: Failed to build gem native extension. (EC2 Ubuntu)

Question

I tried to switch my ruby version from 1.8 (default) to 1.9.3 (latest on Pangolin) as per http://lenni.info/blog/2012/05/installing-ruby-1-9-3-on-ubuntu-12-04-precise-pengolin/. I'm doing this using apt.

The other solutions to related questions on SO involve apt-get install ruby1.9.3-dev but I definitely have it.

$ sudo gem install idn
Building native extensions.  This could take a while...
ERROR:  Error installing idn:
        ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.9.1 extconf.rb
checking for main() in -lidn... yes
checking for idna.h... yes
checking for punycode.h... yes
checking for stringprep.h... yes
creating Makefile

make
compiling idn.c
compiling idna.c
idna.c: In function ‘toASCII’:
idna.c:88:37: error: ‘struct RString’ has no member named ‘ptr’
idna.c: In function ‘toUnicode’:
idna.c:128:41: error: ‘struct RString’ has no member named ‘ptr’
make: *** [idna.o] Error 1


Gem files will remain installed in /var/lib/gems/1.9.1/gems/idn-0.0.2 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/idn-0.0.2/ext/gem_make.out

I have also checked that I have gcc installed and it's again installed from apt.

$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

I'm guessing you are missing some headers. Either when compiling Ruby or IDN's. Perhaps `zlib1g-dev`. — harm, Feb 26 '13 at 19:26
@harm thanks! let me try it. ... `zlib1g-dev is already the newest version.` hmm. — isomorphismes, Feb 26 '13 at 19:33
That sounds like the gem just isn't compatible with ruby 1.9 (which changed how you access string data from a c extension) — Frederick Cheung, Feb 27 '13 at 01:21

score 1 · Answer 1 · answered Feb 26 '13 at 22:09

1

I may give up on this one. I was able to install the punycode4r gem and that works for what I'm trying to do.

answered Feb 26 '13 at 22:09

isomorphismes

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after ruby upgrade: Failed to build gem native extension. (EC2 Ubuntu)

1 Answers1