It begins to stuck when compiling

g++ -DHAVE_CONFIG_H -I. -I.. -I./../gmock/gtest/include -I./../gmock/include -D_THREAD_SAFE -DHAVE_PTHREAD=1 -DHAVE_ZLIB=1 -Wall -Wno-sign-compare -g -DNDEBUG -MT google/protobuf/util/internal/protobuf_test-protostream_objectsource_test.o -MD -MP -MF google/protobuf/util/internal/.deps/protobuf_test-protostream_objectsource_test.Tpo -c -o google/protobuf/util/internal/protobuf_test-protostream_objectsource_test.o test -f 'google/protobuf/util/internal/protostream_objectsource_test.cc' || echo './'google/protobuf/util/internal/protostream_objectsource_test.cc

and not going further any more one hour later. Is it normal?

Much appreciated!