current directory: /usr/local/bundle/gems/ffi-1.9.10/ext/ffi_c /usr/local/bin/ruby -r ./siteconf20151111-5-1ydpmrp.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=/usr/local/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 /usr/local/lib/ruby/2.2.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError) You have to install development tools first. from /usr/local/lib/ruby/2.2.0/mkmf.rb:587:in `try_cpp' from /usr/local/lib/ruby/2.2.0/mkmf.rb:1060:in `block in have_header' from /usr/local/lib/ruby/2.2.0/mkmf.rb:911:in `block in checking_for' from /usr/local/lib/ruby/2.2.0/mkmf.rb:351:in `block (2 levels) in postpone' from /usr/local/lib/ruby/2.2.0/mkmf.rb:321:in `open' from /usr/local/lib/ruby/2.2.0/mkmf.rb:351:in `block in postpone' from /usr/local/lib/ruby/2.2.0/mkmf.rb:321:in `open' from /usr/local/lib/ruby/2.2.0/mkmf.rb:347:in `postpone' from /usr/local/lib/ruby/2.2.0/mkmf.rb:910:in `checking_for' from /usr/local/lib/ruby/2.2.0/mkmf.rb:1059: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:
Gem files will remain installed in /usr/local/bundle/gems/ffi-1.9.10 for inspection. Results logged to /usr/local/bundle/extensions/x86_64-linux/2.2.0-static/ffi-1.9.10/gem_make.out ``` ``` root@64f63ff50c38:/# apt-get install libffi-dev Reading package lists... Done Building dependency tree Reading state information... Done libffi-dev is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded. ``` 求帮助。。。