怪事年年有 今年特別多 pg的安裝在我的gem安裝詭異榜上，也能擠進前三了
先是報錯
gem::installer::extensionbuilderror: error: failed to build gem native extension.
/home/star/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for pg_config… no
no pg_config… trying anyway. if building fails, please try again with
–with-pg-config=/path/to/pg_config
checking for libpq-fe.h… no
can』t find the 『libpq-fe.h header
*** 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=$/include
–with-opt-lib
–without-opt-lib=$/lib
–with-make-prog
–without-make-prog
–srcdir=.
–curdir
–ruby=/home/star/.rvm/rubies/ruby-1.9.3-p194/bin/ruby
–with-pg
–without-pg
–with-pg-dir
–without-pg-dir
–with-pg-include
–without-pg-include=$/include
–with-pg-lib
–without-pg-lib=$/lib
–with-pg-config
–without-pg-config
–with-pg_config
–without-pg_config
gem files will remain installed in /home/star/.rvm/gems/ruby-1.9.3-p194/gems/pg-0.13.2 for inspection.
results logged to /home/star/.rvm/gems/ruby-1.9.3-p194/gems/pg-0.13.2/ext/gem_make.out
an error occured while installing pg (0.13.2), and bundler cannot continue.
make sure that `gem install pg -v 』0.13.2′` succeeds before bundling.
估計是缺少附加gem包支援，查了一下，用命令安裝了資料庫
sudo apt-get install postgresql
sudo apt-get install libpq-dev
當我認為一切都已經ok了的時候，和我大半輩子的悲催人生一樣，慘劇才剛剛開始。。。
報錯了
installing pg (0.11.0) with native extensions
gem::installer::extensionbuilderror: error: failed to build gem native extension.
/home/duan/.rvm/rubies/ruby-1.9.3-p374/bin/ruby extconf.rb
checking for pg_config... yes
using config values from /usr/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.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
--with-opt-include
--without-opt-include=$/include
--with-opt-lib
--without-opt-lib=$/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/home/duan/.rvm/rubies/ruby-1.9.3-p374/bin/ruby
--with-pg
--without-pg
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=$/include
--with-pg-lib
--without-pg-lib=$/lib
--with-pg-config
--without-pg-config
--with-pg_config
--without-pg_config
--with-pqlib
--without-pqlib
--with-libpqlib
--without-libpqlib
--with-ms/libpqlib
--without-ms/libpqlib
gem files will remain installed in /home/duan/.rvm/gems/ruby-1.9.3-p374@railsduan/gems/pg-0.11.0 for inspection.
results logged to /home/duan/.rvm/gems/ruby-1.9.3-p374@railsduan/gems/pg-0.11.0/ext/gem_make.out
an error occurred while installing pg (0.11.0), and bundler cannot continue.
make sure that `gem install pg -v '0.11.0'` succeeds before bundling.
我從精神抖擻的查閱資料，到只要是個命令就放上去試試，最後到快絕望時，在乙個旮旯發現了解決方案
mv ~/.rvm/usr/lib ~/.rvm/usr/lib_rvm好像是rvm的lib編譯代替了系統的編譯導致的這個問題，感謝stackoverflow！
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