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Libtool: compile: clang -DHAVE_CONFIG_H -I. libtool -tag=CC -mode=compile clang -DHAVE_CONFIG_H -I. noĬhecking for rb_thread_call_without_gvl(). siteconf20200329-12274-1mw6aa1.rb extconf.rbĬhecking for ffi.h in /usr/local/include,/usr/include/ffi. This could take a while.ĮRROR: Failed to build gem native extension.Ĭurrent directory: /Users/phwl/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/ffi-1.12.2/ext/ffi_c
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% gem install ffi -v '1.12.2' -source ''īuilding native extensions.
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