ruby升级后：无法构建gem原生扩展。 （EC2 Ubuntu）

Question

我尝试按照http://lenni.info/blog/2012/05/installing-ruby-1-9-3-on-ubuntu-12-04-precise-pengolin/将我的ruby版本从1.8（默认）切换到1.9.3（最新的Pangolin）。我正在使用apt执行此操作。

关于SO的相关问题的其他解决方案涉及apt-get install ruby1.9.3-dev，但我绝对拥有它。

$ 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

我还检查过我已经安装了gcc，并且已经从apt安装了它。

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

Answer 1

我可能会放弃这个。我能够安装punycode4r宝石，这适用于我正在尝试做的事情。