current directory: /home/sho/src/tdiary/core/vendor/bundle/gems/ffi-1.9.18/ext/ffi_c /home/sho/.rbenv/versions/2.4.2/bin/ruby -r ./siteconf20170929-13155-13htruw.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/sho/src/tdiary/core/vendor/bundle/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" clean current directory: /home/sho/src/tdiary/core/vendor/bundle/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" compiling AbstractMemory.c compiling ArrayType.c compiling Buffer.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 ClosurePool.c compiling DataConverter.c compiling DynamicLibrary.c 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 FunctionInfo.c compiling LastError.c compiling LongDouble.c compiling MappedType.c compiling MemoryPointer.c compiling MethodHandle.c compiling Platform.c compiling Pointer.c compiling Struct.c compiling StructByReference.c compiling StructByValue.c compiling StructLayout.c compiling Thread.c compiling Type.c compiling Types.c compiling Variadic.c compiling ffi.c linking shared-object ffi_c.so current directory: /home/sho/src/tdiary/core/vendor/bundle/gems/ffi-1.9.18/ext/ffi_c make "DESTDIR=" install /usr/bin/install -c -m 0755 ffi_c.so ./.gem.20170929-13155-tkpac8