我正在尝试使用 gem
命令安装 Rails。
sudo gem install rails
在全新的Ubuntu 16.04版本上,已经安装了Ruby 2.3.1p112。在安装Rails期间,一旦完成获取Nokogiri操作,我会收到下面的错误提示:
Fetching: nokogiri-1.8.0.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.3.0/gems/nokogiri-1.8.0/ext/nokogiri
/usr/bin/ruby2.3 -r ./siteconf20170608-1635-1vnwqbn.rb extconf.rb
checking if the C compiler accepts ... *** 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=/usr/bin/$(RUBY_BASE_NAME)2.3
--help
--clean
/usr/lib/ruby/2.3.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /usr/lib/ruby/2.3.0/mkmf.rb:571:in `block in try_compile'
from /usr/lib/ruby/2.3.0/mkmf.rb:522:in `with_werror'
from /usr/lib/ruby/2.3.0/mkmf.rb:571:in `try_compile'
from extconf.rb:138:in `nokogiri_try_compile'
from extconf.rb:162:in `block in add_cflags'
from /usr/lib/ruby/2.3.0/mkmf.rb:629:in `with_cflags'
from extconf.rb:161:in `add_cflags'
from extconf.rb:407:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nokogiri-1.8.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.3.0/gems/nokogiri-1.8.0 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nokogiri-1.8.0/gem_make.out
这是mkmf.log文件的内容:
"gcc -o conftest -I/usr/include/x86_64-linux-gnu/ruby-2.3.0 -I/usr/include/ruby-2.3.0/ruby/backward -I/usr/include/ruby-2.3.0 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fPIC conftest.c -L. -L/usr/lib/x86_64-linux-gnu -L. -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -fstack-protector -rdynamic -Wl,-export-dynamic -lruby-2.3 -lpthread -lgmp -ldl -lcrypt -lm -lc "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main(int argc, char **argv)
4: {
5: return 0;
6: }
/* end */
我不知道哪里出了问题。日志也没有帮助,而且我已经尝试安装libgmp-dev、ruby-dev、zlib1g-dev和liblzma-dev了,因为这些被建议给那些在Nokogiri gem安装过程中遇到错误的人。