#gem install sass
Building native extensions. This could take a while...
ERROR: Error installing sass:
ERROR: Failed to build gem native extension.
/usr/bin/ruby2.2 -r ./siteconf20180217-38265-1l6kefu.rb extconf.rb
checking for ffi.h... no
checking for ffi.h in /usr/local/include,/usr/include/ffi... no
checking for shlwapi.h... no
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_with_gvl()... yes
checking for rb_thread_call_without_gvl()... yes
creating extconf.h
creating Makefile
make "DESTDIR=" clean
make "DESTDIR="
Running autoreconf for libffi
/var/lib/gems/2.2.0/gems/ffi-1.9.21/ext/ffi_c/libffi/autogen.sh: 2: exec: autoreconf: not found
make: *** ["/var/lib/gems/2.2.0/gems/ffi-1.9.21/ext/ffi_c/libffi-x86_64-linux-gnu"/.libs/libffi_convenience.a] Error 127
make failed, exit code 2
答案1
由于 ruby-ffi 包依赖性和 ruby 版本导致的问题，
sudo apt-get install build-essential
sudo apt-get install ruby2.0 ruby2.0-dev
sudo apt-get install ruby-ffi
gem install sass