I think you should add *#define PROTOBUF_USE_DLLS *as a compiler flag. e.g., CXXFLAGS=-D*PROTOBUF_USE_DLLS*.
On Fri, Feb 17, 2017 at 7:33 AM pokamest nikak <pokam...@gmail.com> wrote: > Hi! I'm trying to build Qt app with protobuf 3.2. > Since Qt is dynamically linked I built protobuf as dll by configuring with > > cmake -G "NMake Makefiles" ^ > -DCMAKE_BUILD_TYPE=Release ^ > -Dprotobuf_BUILD_SHARED_LIBS=ON ^ > -DCMAKE_INSTALL_PREFIX=../../../../install ^ > ../.. > > > Libs were included to Qt pro file > > > win32: LIBS += -L$$PWD/protobuf-windows-dynamic/lib/ -llibprotobuf > > INCLUDEPATH += $$PWD/protobuf-windows-dynamic/include > > DEPENDPATH += $$PWD/protobuf-windows-dynamic/include > > > > When I build my Qt app I got next errors: > > test.pb.obj:-1: ошибка: LNK2019: ссылка на неразрешенный внешний символ > "private: static bool > google::protobuf::io::CodedOutputStream::default_serialization_deterministic_" > (?default_serialization_deterministic_@CodedOutputStream@io@protobuf > @google@@0_NA) в функции "public: static bool __cdecl > google::protobuf::io::CodedOutputStream::IsDefaultSerializationDeterministic(void)" > (?IsDefaultSerializationDeterministic@CodedOutputStream@io@protobuf > @google@@SA_NXZ) > > > > test.pb.obj:-1: ошибка: LNK2019: ссылка на неразрешенный внешний символ > "class google::protobuf::internal::ExplicitlyConstructed<class > std::basic_string<char,struct std::char_traits<char>,class > std::allocator<char> > > > google::protobuf::internal::fixed_address_empty_string" > (?fixed_address_empty_string@internal@protobuf@google > @@3V?$ExplicitlyConstructed@V?$basic_string@DU?$char_traits@D@std@ > @V?$allocator@D@2@@std@@@123@A) в функции "public: __thiscall > r::RouteList::RouteList(class r::RouteList const &)" (??0RouteList@r > @@QAE@ABV01@@Z) > > > As described in README > > Static linking is now the default for the Protocol Buffer libraries. > Due to > issues with Win32's use of a separate heap for each DLL, as well as binary > compatibility issues between different versions of MSVC's STL library, it > is > recommended that you use static linkage only. However, it is possible to > build libprotobuf and libprotoc as DLLs if you really want. To do this, > do the following: > > * Add an additional flag `-Dprotobuf_BUILD_SHARED_LIBS=ON` when invoking > cmake > * Follow the same steps as described in the above section. > * * When compiling your project, make sure to `#define > PROTOBUF_USE_DLLS`.* > > > I tried to insert this #define string to several places, but #define > hadn't have any effect. > The last attempt was I made is insert this string to test.pb.h file > generated by protoc, and app was built successfully. > > But *.pb.h is not a good place to make changes. > Tell me please, where is good place to insert > > *#define PROTOBUF_USE_DLLS ?* > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to protobuf+unsubscr...@googlegroups.com. > To post to this group, send email to protobuf@googlegroups.com. > Visit this group at https://groups.google.com/group/protobuf. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to protobuf+unsubscr...@googlegroups.com. To post to this group, send email to protobuf@googlegroups.com. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
