如何在 Heroku 上安装 charlock_holmes 依赖项 libicu-dev [英] How to install charlock_holmes dependency libicu-dev on Heroku

问题描述

我在 Rails 4 应用程序中使用 ruby​​ gem charlock_holmes 来检测 CSV 的字符编码我正在解析以便 CSV.foreach 不会抛出错误.

I'm using the ruby gem charlock_holmes in a Rails 4 app to detect the character encodings of CSV's that I'm parsing so that CSV.foreach doesn't throw an error.

但是，当我尝试推送到 heroku(使用 Gemfile 中的 gem 'charlock_holmes')时，我收到以下错误:

However, when I try to push to heroku (with gem 'charlock_holmes' in the Gemfile) I get the following error:

Installing charlock_holmes (0.6.9.4)
   Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

   /tmp/build_e741f6ed-a860-47bf-8c0d-1b678fa0ebeb/vendor/ruby-2.0.0/bin/ruby extconf.rb
   checking for main() in -licui18n... no
   checking for main() in -licui18n... no


   ***************************************************************************************
   *********** icu required (brew install icu4c or apt-get install libicu-dev) ***********
   ***************************************************************************************
   *** 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
   --without-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=/tmp/build_e741f6ed-a860-47bf-8c0d-1b678fa0ebeb/vendor/ruby-2.0.0/bin/ruby
   --with-icu-dir
   --without-icu-dir
   --with-icu-include
   --without-icu-include=${icu-dir}/include
   --with-icu-lib
   --without-icu-lib=${icu-dir}/
   --with-icui18nlib
   --without-icui18nlib
   --with-icui18nlib
   --without-icui18nlib


   Gem files will remain installed in /tmp/build_e741f6ed-a860-47bf-8c0d-1b678fa0ebeb/vendor/bundle/ruby/2.0.0/gems/charlock_holmes-0.6.9.4 for inspection.
   Results logged to /tmp/build_e741f6ed-a860-47bf-8c0d-1b678fa0ebeb/vendor/bundle/ruby/2.0.0/gems/charlock_holmes-0.6.9.4/ext/charlock_holmes/gem_make.out
   An error occurred while installing charlock_holmes (0.6.9.4), and Bundler cannot
   continue.
   Make sure that `gem install charlock_holmes -v '0.6.9.4'` succeeds before
   bundling.

如何让 libicu-dev 安装在 Heroku 上?

How do I get libicu-dev to install on Heroku?

推荐答案

遗憾的是其他两个解决方案对我不起作用(见下文)，所以我不得不想出我自己的解决方案.此解决方案适用于 Ruby 1.9.3，但 hammady 表示它不适用于 2.0.0.

Sadly the other two solutions don't work for me (see below), so I had to come up with my own solution. This solution works with Ruby 1.9.3 but hammady says it does not work with 2.0.0.

我使用了heroku-buildpack-multi:

heroku config:add BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi.git

使用以下 .buildpacks:

https://github.com/benjie/heroku-buildpack-apt
https://github.com/heroku/heroku-buildpack-ruby

还有这个Aptfile:

libicu-dev

我的>heroku-buildpack-apt 需要通过 BUNDLE_BUILD__CHARLOCK_HOLMES 变量rel="nofollow noreferrer">Heroku 的 ENV_DIRs.在 Gemfile 中，您只需像往常一样引用 gem 'charlock_holmes'，现在对我来说一切都很顺利.

My fork of heroku-buildpack-apt is required to export the BUNDLE_BUILD__CHARLOCK_HOLMES variable via Heroku's ENV_DIRs. In the Gemfile you just reference gem 'charlock_holmes' as usual and all works smoothly now for me.

如果有人能想到一种不涉及导出BUNDLE_BUILD__CHARLOCK_HOLMES的方法，请告诉我！

If anyone can think of a way that doesn't involve exporting BUNDLE_BUILD__CHARLOCK_HOLMES then please let me know!

Ryan 的 答案对我不起作用 - Heroku 保释，因为捆绑安装步骤不提供任何输出3分钟.Silasj 的 答案引用了 frederick/heroku-buildpack-ruby 构建包，该构建包不再维护且滞后落后于官方 heroku-buildpack-ruby 相当多，我无法接受.

Ryan's answer doesn't work for me - Heroku bails because the bundle install step doesn't offer any output for 3 minutes. Silasj's answer references the frederick/heroku-buildpack-ruby buildpack which is no longer maintained and lags behind the official heroku-buildpack-ruby by quite an amount, which is not acceptable to me.

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