我正在尝试使用 JRuby Heroku buildpack (https://github.com/jruby/heroku-buildpack-jruby) 来运行一个简单的测试应用程序。
但是,似乎无法编译具有 C 扩展名的 gem。例如,在执行“git push heroku”时,没有C扩展的gem安装成功,但是...
Using activerecord (3.1.3)
Using activeresource (3.1.3)
Using bouncy-castle-java (1.5.0146.1)
Using bson (1.7.0)
Installing bson_ext (1.7.0) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/tmp/build_10vcxrs9ayvxf/jruby/bin/jruby extconf.rb
NotImplementedError: C extension support is not enabled. Pass -Xcext.enabled=true to JRuby or set JRUBY_OPTS or modify .jrubyrc to enable.
(root) at /tmp/build_10vcxrs9ayvxf/jruby/lib/ruby/shared/mkmf.rb:8
require at org/jruby/RubyKernel.java:1019
(root) at /tmp/build_10vcxrs9ayvxf/jruby/lib/ruby/shared/rubygems/custom_require.rb:1
(root) at extconf.rb:1
Gem files will remain installed in /tmp/build_10vcxrs9ayvxf/vendor/bundle/jruby/1.9/gems/bson_ext-1.7.0 for inspection.
Results logged to /tmp/build_10vcxrs9ayvxf/vendor/bundle/jruby/1.9/gems/bson_ext-1.7.0/ext/cbson/gem_make.out
An error occurred while installing bson_ext (1.7.0), and Bundler cannot continue.
Make sure that `gem install bson_ext -v '1.7.0'` succeeds before bundling.
Dependencies installed
看到上面给出的建议后,我创建了 JRuby buildpack 的修改版本,可以在这里找到:https ://github.com/grahamdaley/heroku-buildpack-jruby-cext
这个 buildpack 和原来的唯一区别是我现在设置了 JRUBY_OPTS 如下:
JRUBY_OPTS="--1.9 -Xcext.enabled=true -J-Xmx400m"
但是,这似乎根本没有任何区别,我仍然遇到同样的错误。
有什么提示吗?是否有可能(并且会有所帮助)在 buildpack 的某处添加一个 .jrubyrc 文件?