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我找不出安裝rmagick的問題。gem install rmagick break
看來，我把所有的依賴關係：
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... yes
Warning: Found more than one ImageMagick installation. This could cause problems at runtime.
/usr/bin/Magick-config reports version 6.7.2 Q16 is installed in /usr
/usr/bin/X11/Magick-config reports version 6.7.2 Q16 is installed in /usr
Using 6.7.2 Q16 from /usr.
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... *** 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=/home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/bin/ruby
/home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:565:in `try_cpp'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:1044:in `block in have_header'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postpone'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:336:in `postpone'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for'
from /home/my-domain/my-user/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/mkmf.rb:1043:in `have_header'
from extconf.rb:194:in `<main>'
是什麼意思是「你必須先安裝開發工具。」？ 我在SuSE服務器上，這是發行細節：
SUSE Linux企業服務器11（x86_64的） VERSION = 11 PATCHLEVEL = 2