current directory: /home/lskillen/work/cloudsmith/cloudsmith-api/bindings/ruby/src/vendor/bundle/ruby/2.3.0/gems/ffi-1.9.18/ext/ffi_c /opt/chefdk/embedded/bin/ruby -r ./siteconf20171207-27057-1d5ggzy.rb extconf.rb checking for ffi_call() in -lffi... yes checking for ffi_prep_closure()... yes checking for ffi_raw_call()... yes checking for ffi_prep_raw_closure()... yes 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 checking for ffi_prep_cif_var()... yes creating extconf.h creating Makefile current directory: /home/lskillen/work/cloudsmith/cloudsmith-api/bindings/ruby/src/vendor/bundle/ruby/2.3.0/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" clean current directory: /home/lskillen/work/cloudsmith/cloudsmith-api/bindings/ruby/src/vendor/bundle/ruby/2.3.0/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" compiling Function.c Function.c: In function ‘async_cb_event’: Function.c:563:9: warning: implicit declaration of function ‘rb_thread_call_without_gvl’ [-Wimplicit-function-declaration] rb_thread_call_without_gvl(async_cb_wait, &w, async_cb_stop, &w); ^ compiling MemoryPointer.c compiling Platform.c compiling DataConverter.c compiling ffi.c compiling ArrayType.c compiling DynamicLibrary.c compiling StructByValue.c compiling MappedType.c compiling StructByReference.c compiling Type.c compiling AbstractMemory.c compiling Struct.c compiling Pointer.c compiling Thread.c compiling Call.c In file included from Call.h:36:0, from Function.h:48, from Call.c:57: Call.c: In function ‘rbffi_do_blocking_call’: Thread.h:78:39: warning: implicit declaration of function ‘rb_thread_call_without_gvl’ [-Wimplicit-function-declaration] # define rbffi_thread_blocking_region rb_thread_call_without_gvl ^ Call.c:355:5: note: in expansion of macro ‘rbffi_thread_blocking_region’ rbffi_thread_blocking_region(call_blocking_function, data, (void *) -1, NULL); ^ compiling MethodHandle.c compiling FunctionInfo.c compiling LongDouble.c compiling Buffer.c compiling StructLayout.c compiling ClosurePool.c compiling LastError.c compiling Variadic.c compiling Types.c linking shared-object ffi_c.so current directory: /home/lskillen/work/cloudsmith/cloudsmith-api/bindings/ruby/src/vendor/bundle/ruby/2.3.0/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" install /usr/bin/install -c -m 0755 ffi_c.so ./.gem.20171207-27057-1u50sbe