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我試圖在我的系統上安裝pg gem（macbook pro運行10.10，Postgresql 9.3.5_1，Ruby 1.9.3p547，Xcode v6.1（6A1052c））：在OSX 10.10上安裝pg gem時遇到的麻煩
ARCHFLAGS="-arch x86_64" gem install pg -- --with-pg-config=/usr/local/Cellar/postgresql/9.3.5_1/bin/pg_config
返回此：
Building native extensions with: '--with-pg-config=/usr/local/Cellar/postgresql/9.3.5_1/bin/pg_config'
This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/bin/ruby extconf.rb --with-pg-config=/usr/local/Cellar/postgresql/9.3.5_1/bin/pg_config
Using config values from /usr/local/Cellar/postgresql/9.3.5_1/bin/pg_config
*** 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
--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=/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/bin/ruby
--with-pg
--without-pg
--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}/lib
/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /Users/thomas/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/mkmf.rb:461:in `try_link0'
from /Users/thomas/.rvm/rubies/ruby-1.9.3-p547/lib/ruby/1.9.1/mkmf.rb:476:in `try_link'
from extconf.rb:39:in `<main>'
extconf failed, exit code 1
Gem files will remain installed in /Users/thomas/.rvm/gems/ruby-1.9.3-p547/gems/pg-0.17.1 for inspection.
Results logged to /Users/thomas/.rvm/gems/ruby-1.9.3-p547/extensions/x86_64-darwin-13/1.9.1/pg-0.17.1/gem_make.out
什麼？
我敢肯定，我已經安裝了開發工具：
xcode-select --print-path
返回：
/Applications/Xcode.app/Contents/Developer
我mkmf.log文件包含此：
"/usr/local/opt/gcc46/bin/gcc-4.6 -o conftest -I/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/include/ruby-1.9.1/x86_64-darwin13.4.0 -I/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/include/ruby-1.9.1/ruby/backward -I/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/include/ruby-1.9.1 -I. -I/usr/local/Cellar/postgresql/9.3.5_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl/include -O3 -ggdb -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -fno-common -pipe conftest.c -L. -L/Users/thomas/.rvm/rubies/ruby-1.9.3-p547/lib -L/usr/local/Cellar/postgresql/9.3.5_1/lib -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl/lib -lruby.1.9.1 -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main(int argc, char **argv)
4: {
5: return 0;
6: }
/* end */
隱而不宣人有關於這裏發生了什麼的線索？任何幫助將不勝感激！
您的'xcode-select -print-path'命令顯示Xcode已安裝，但未必安裝最新的命令行工具，它們分別安裝在不同的軟件包中。 'xcode-select --install'可以用來安裝它們。如果失敗 - 「無法安裝軟件，因爲它目前不能從軟件更新服務器獲得」，那麼您必須從Apple開發人員網站手動下載它們。 – 2014-10-20 17:15:12
@SomeDeveloper我已經完成了這個任務（分別安裝了10.10命令行工具），但我仍然得到上面的錯誤： -/ – thomax 2014-10-20 20:08:08
您的mkmf.log文件顯示'/ usr/local/opt/gcc46/bin/gcc-4.6' ，它看起來像一個brew或ports安裝的編譯器。不應該是'/ usr/bin/gcc'嗎？可能只是一個路徑問題？ – 2014-10-20 22:46:10