ruby - Nokogiri 在 Ubuntu 20.04 上安装失败

Question

我正在尝试安装 Nokogiri gem 以便与 Ruby on Rails 一起使用，但无论我安装哪个包，我都无法构建它。我正在运行 Ubuntu 20.04。

我已经在 Nokogiri 网站 ( https://nokogiri.org/tutorials/installing_nokogiri.html ) 上安装了本指南中的所有软件包:

sudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev
gem install nokogiri

我用的是RVM，所以我也安装了libgmp-dev包，上面的教程也推荐了。

在寻找其他解决方案时，我还安装了以下软件包:

sudo apt-get install gcc ruby-dev libxslt-dev libxml2-dev zlib1g-dev

ruby 版本:2.7.1
RVM 版本:1.29.10
gem 版本:3.1.2

gem_make.out

current directory: /home/dan/.rvm/gems/ruby-2.7.1/gems/nokogiri-1.10.10/ext/nokogiri
/usr/share/rvm/rubies/ruby-2.7.1/bin/ruby -I /usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0 -r ./siteconf20200924-8532-1t7wwwh.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/share/rvm/rubies/ruby-2.7.1/bin/$(RUBY_BASE_NAME)
    --help
    --clean
/usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0/mkmf.rb:471:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0/mkmf.rb:597:in `block in try_compile'
    from /usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0/mkmf.rb:544:in `with_werror'
    from /usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0/mkmf.rb:597:in `try_compile'
    from extconf.rb:138:in `nokogiri_try_compile'
    from extconf.rb:162:in `block in add_cflags'
    from /usr/share/rvm/rubies/ruby-2.7.1/lib/ruby/2.7.0/mkmf.rb:655:in `with_cflags'
    from extconf.rb:161:in `add_cflags'
    from extconf.rb:416:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/dan/.rvm/gems/ruby-2.7.1/extensions/x86_64-linux/2.7.0/nokogiri-1.10.10/mkmf.log

extconf failed, exit code 1

mkmf.log

"gcc -o conftest -I/usr/share/rvm/rubies/ruby-2.7.1/include/ruby-2.7.0/x86_64-linux -I/usr/share/rvm/rubies/ruby-2.7.1/include/ruby-2.7.0/ruby/backward -I/usr/share/rvm/rubies/ruby-2.7.1/include/ruby-2.7.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c  -L. -L/usr/share/rvm/rubies/ruby-2.7.1/lib -Wl,-rpath,/usr/share/rvm/rubies/ruby-2.7.1/lib -L. -fstack-protector-strong -rdynamic -Wl,-export-dynamic     -Wl,-rpath,'/../lib' -Wl,-rpath,'/../lib' -lruby  -lm   -lc "
gcc: error: unrecognized command line option '-Wduplicated-cond'
gcc: error: unrecognized command line option '-Wmisleading-indentation'
gcc: error: unrecognized command line option '-Wimplicit-fallthrough=0'
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main(int argc, char **argv)
4: {
5:   return !!argv[argc];
6: }
/* end */

如有任何帮助，我们将不胜感激。

Answer 1

您必须对 Ruby 2.7.x 进行完整编译才能在 Ubuntu 20.04 上安装 nokogiri 1.10.10。

对于全新安装运行:

rvm install 2.7 --disable-binary

要重新安装现有的 ruby​​ 版本，请使用:

rvm reinstall 2.7 --disable-binary