Question

我正在尝试安装sass。我确实设法通过npm（使用dart2js 2.0.0编译的1.14.1）安装了它，但是我需要使用Ruby（Ruby Sass 3.5.6。）安装它。现在，这是我运行“ sudo gem install sass”时的错误

Building native extensions. This could take a while...
ERROR:  Error installing sass:
ERROR: Failed to build gem native extension.

current directory: /Library/Ruby/Gems/2.3.0/gems/ffi-1.9.25/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r ./siteconf20181004-3909-1iytz3s.rb extconf.rb
checking for ffi.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=/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/$(RUBY_BASE_NAME)
--with-ffi_c-dir
--without-ffi_c-dir
--with-ffi_c-include
--without-ffi_c-include=${ffi_c-dir}/include
--with-ffi_c-lib
--without-ffi_c-lib=${ffi_c-dir}/lib
--with-libffi-config
--without-libffi-config
--with-pkg-config
--without-pkg-config 

/System/Library/Frameworks/Ruby.framework/Versions/2.3/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 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:571:in `block in try_compile'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:524:in `with_werror'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:571:in `try_compile'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:1091:in `block in have_header'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:942:in `block in checking_for'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:350:in `block (2 levels) in postpone'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:320:in `open'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:350:in `block in postpone'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:320:in `open'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:346:in `postpone'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:941:in `checking_for'
from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/
2.3.0/mkmf.rb:1090:in `have_header'
from extconf.rb:16:in `<main>'

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

 /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-18/2.3.0/ffi-1.9.25/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.3.0/gems/ffi-1.9.25 for inspection.
Results logged to /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-18/2.3.0/ffi-1.9.25/gem_make.out

我曾尝试更新Ruby，删除通过npm安装的sass，按某些建议更新xcode开发工具。但是没有任何效果。我不知道是什么原因造成的，因为我从0更新到新的Mac OS Mojave之前就已经清醒了。

这是mkmf.log文件：

package configuration for libffi is not found
"xcrun clang -o conftest - 
I/System/Library/Frameworks/Ruby.framework
/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin18 - 
I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/
include/ruby-2.3.0/ruby/backward - 
I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/
ruby-2.3.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE - 
D_DARWIN_UNLIMITED_SELECT -D_REENTRANT    -g -Os -pipe - 
DHAVE_GCC_ATOMIC_BUILTINS conftest.c  -L. - 
L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L.     
-lruby.2.3.0  -lpthread -ldl -lobjc "
In file included from conftest.c:1:
In file included from 
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/
ruby-2.3.0/ruby.h:33:
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/
ruby-2.3.0/ruby/ruby.h:24:10: fatal error: 'ruby/config.h' file not found
#include "ruby/config.h"
     ^~~~~~~~~~~~~~~
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main(int argc, char **argv)
4: {
5:   return 0;
6: }
/* end */

有什么想法吗？

Answer 1

在mac中执行以下步骤安装SASS无错误

安装 gpg brew install -v gpg
安装 gpg 密钥 gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
允许 curl 在不检查 SSL 的情况下运行（否则命令 #4 将引发错误）回声不安全>> ~/.curlrc
安装rvm \curl -sSL -k https://get.rvm.io | bash
要使用 rvm，您将在 #3 中运行命令后获得输出，例如：要开始使用 RVM，您需要运行 source /Users/ymehta/.rvm/scripts/rvm 复制粘贴命令并按 Enter
删除现有的 ruby 版本 rvm 删除红宝石
安装红宝石 rvm 安装红宝石
rvm 文档生成-ri
安装sass sudo gems 安装 sass
检查sass版本 sass --version

可以在 https://gist.github.com/Yashvi-Mehta/9ad81330d1703f12a00b63cf20c9cdb3

找到相同的步骤

Answer 2

好的，所以找到了解决方案。如果您有此错误。这样做：

安装rvm（https://rvm.io/）
然后我必须运行此命令以使rvm工作：

如果sudo grep -q secure_path / etc / sudoers;然后sudo sh -c“ echo export rvmsudo_secure_path = 1 >> /etc/profile.d/rvm_secure_path.sh” && echo安装环境变量； fi

接下来用rvm我删除了ruby：

rvm删除红宝石

最后安装ruby：

rvm安装ruby

不确定是否需要执行此步骤，但这就是我在控制台中执行的操作：Ruby是在没有文档的情况下构建的，要运行它，请执行以下操作：rvm docs generate-ri

所以我也运行了这个命令。之后，我终于能够对sudo gem安装sass了。

现在可以了！

错误：安装sass时出错：错误：无法构建gem本机扩展

2 个答案: