ruby-on-rails - PostgreSQL gem for rails 不会安装，即使同时安装了 home brew 和 app

Question

我试过按照这个answer让 gem 工作，但它不会。我设置了我的项目，这样各个项目都有自己的 gem ，而不是生活在全局空间中的所有主题 gem ，然后我使用 binstubs 来允许我做 bin/rails.

因此，每个项目的所有 gem 都安装到 .bundle/gems/。总是给我带来最棘手问题的是 posgresql。让我们完成这些步骤。

所以我跑:

bundle

它爆炸说:

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb --with-pg-config=/Applications/Postgres.app/Contents/Versions/9.3/bin/pg_config
Using config values from /Applications/Postgres.app/Contents/Versions/9.3/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** 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=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
    --with-pg
    --without-pg
    --enable-windows-cross
    --disable-windows-cross
    --with-pg-config
    --with-pg-dir
    --without-pg-dir
    --with-pg-include
    --without-pg-include=${pg-dir}/include
    --with-pg-lib
    --without-pg-lib=${pg-dir}/
    --with-pqlib
    --without-pqlib
    --with-libpqlib
    --without-libpqlib
    --with-ms/libpqlib
    --without-ms/libpqlib


Gem files will remain installed in /Users/Adam/Documents/Rails-Projects/AisisPlatform/.bundle/gems/gems/pg-0.18.1 for inspection.
Results logged to /Users/Adam/Documents/Rails-Projects/AisisPlatform/.bundle/gems/gems/pg-0.18.1/ext/gem_make.out
An error occurred while installing pg (0.18.1), and Bundler cannot continue.
Make sure that `gem install pg -v '0.18.1'` succeeds before bundling.

那么，因为我在 9.4.0 上安装了 home brew 版本并安装了 posgresql.app，所以我做了:

bundle config build.pg --with-pg-config=/Applications/Postgres.app/Contents/Versions/9.3/bin/pg_config

紧接着，因为我用的是18.1

gem install pg -v '0.18.1'

我得到了:

Building native extensions.  This could take a while...
Successfully installed pg-0.18.1
invalid options: -f fivefish
(invalid options are ignored)
Parsing documentation for pg-0.18.1
Done installing documentation for pg after 2 seconds
1 gem installed

从那里我尝试了 bundle 好吧，我们回到原点，因为即使安装了 gem - 我也得到了EXACT相同的错误。

这是因为我在全局而不是本地安装 pg gem 吗？我怎样才能解决这个问题？这个项目，每次我必须做一个 rm -rf .bundle/gems 一遍又一遍地导致这个确切的问题。

我应该指出，即使我使用 home brew psql pg_config 我也会遇到同样的错误 执行上述所有步骤，仅使用 home brew 版本，结果相同。

Answer 1

最后是:

ARCHFLAGS="-arch x86_64" bundle install

这对我有用。

原因是:

by default it tries to compile a universal binary, which apparently fails... so that environment variable makes it only compile the x86 version which is all you need

you can add this line to your ~/.profile or similar: export
ARCHFLAGS="-arch x86_64"

如需进一步阅读，请参阅:This README for OSX