安装 Ruby gem 时的开发人员工具问题

Question

我正在尝试将 puma 安装到我的 MacOS 10.13.6 上。要安装 puma，我运行命令 gem install puma 但它返回了

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

   current directory: /Users/salem/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.12.0/ext/puma_http11
    /Users/salem/.rbenv/versions/2.5.1/bin/ruby -r ./siteconf20180801-14654-17z0n88.rb extconf.rb
    checking for BIO_read() in -lcrypto... *** 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=/Users/salem/.rbenv/versions/2.5.1/bin/$(RUBY_BASE_NAME)
        --with-puma_http11-dir
        --without-puma_http11-dir
        --with-puma_http11-include
        --without-puma_http11-include=${puma_http11-dir}/include
        --with-puma_http11-lib
        --without-puma_http11-lib=${puma_http11-dir}/lib
        --with-openssl-dir
        --with-openssl-include
        --without-openssl-include=${openssl-dir}/include
        --with-openssl-lib
        --without-openssl-lib=${openssl-dir}/lib
        --with-cryptolib
        --without-cryptolib
    /Users/salem/.rbenv/versions/2.5.1/lib/ruby/2.5.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
    You have to install development tools first.
        from 


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

      /Users/salem/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-darwin-17/2.5.0-static/puma-3.12.0/mkmf.log

    extconf failed, exit code 1

Gem files will remain installed in /Users/salem/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.12.0 for inspection.
Results logged to /Users/salem/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-darwin-17/2.5.0-static/puma-3.12.0/gem_make.out`

_mkmf.log_ 可以在下面找到...

clang -o conftest -I/Users/salem/.rbenv/versions/2.5.1/include/ruby-2.5.0/x86_64-darwin17 -I/Users/salem/.rbenv/versions/2.5.1/include/ruby-2.5.0/ruby/backward -I/Users/salem/.rbenv/versions/2.5.1/include/ruby-2.5.0 -I. -I/usr/local/opt/openssl/include -I/Users/salem/.rbenv/versions/2.5.1/include  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT    -O3 -Wno-error=shorten-64-to-32  -pipe conftest.c  -L. -L/Users/salem/.rbenv/versions/2.5.1/lib -L/usr/local/opt/openssl/lib -L. -L/Users/salem/.rbenv/versions/2.5.1/lib  -fstack-protector -L/usr/local/lib     -lruby.2.5.1-static -framework Foundation  -lpthread -ldl -lobjc "
error: unable to open output file '~/tmp/conftest-8ad96a.o': 'No such file or directory'
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 */

Xcode 安装在我的 Mac 上。我运行 xcode-select --install 确认 Xcode 已经安装。

然后我认为这可能是权限问题...

~ $ ls -lah tmp
total 0
drwxrwxrwx   3 salem  staff    96B Jul 30 08:35 .
drwxr-xr-x+ 62 salem  staff   1.9K Aug  1 13:17 ..
drwxr-xr-x   3 salem  staff    96B Jul 27 15:11 vmSWVyg

但它似乎设置了正确的权限。

安装 nokugiri 时也会出现此问题

Answer 1

您可能想要安装 openssl，例如通过自制软件：

brew install openssl

github 上也讨论了类似的问题。

如果是 nokogiri，libxml 可能会丢失：

brew install libxml2