Linker error on ortools_full.lib: utf8_range::IsStructurallyValid missing

[pauldegroot]

What version of OR-Tools and what language are you using?
Version: v9.7 binary
Language: C++

What operating system (Linux, Windows, ...) and version?
Windows 10, Visual Studio 2022

What did you do?
Steps to reproduce the behavior:

1. Use ortools_full.lib to link the application
2. Got linker error that utf8_range::IsStructurallyValid and utf8_range::SpanStructurallyValid are missing.
3. Add protocolbuffers/utf8_range/utf8_validity_test.cc code to project ( see [https://github.com/protocolbuffers/utf8_range/blob/main/utf8_validity.cc] )
4. Code now compiles, seems a .cc-files was forgotten in the build

What did you expect to see
Succesful compilation

What did you see instead?
A linker error

[ankane]

fwiw, I'm also seeing a linker error with google::protobuf::TextFormat::PrintToString on Mac when trying to update the Ruby library (adding libprotobuf.a fixes it, but wasn't previously needed)

Undefined symbols for architecture arm64:
  "google::protobuf::TextFormat::PrintToString(google::protobuf::Message const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>*)", referenced from:
      Rice::detail::NativeFunction<operations_research::sat::CpModelBuilder, init_constraint(Rice::Module&)::$_40, true>::call(int, unsigned long*, unsigned long) in constraint.o
  "google::protobuf::Arena::AllocateForArray(unsigned long)", referenced from:
      google::protobuf::RepeatedField<int>::GrowNoAnnotate(int, int) in constraint.o
  "google::protobuf::Duration* google::protobuf::Arena::CreateMaybeMessage<google::protobuf::Duration>(google::protobuf::Arena*)", referenced from:
      Rice::detail::NativeFunction<operations_research::RoutingSearchParameters, init_routing(Rice::Module&)::$_4, true>::call(int, unsigned long*, unsigned long) in routing.o
      Rice::detail::NativeFunction<operations_research::RoutingSearchParameters, init_routing(Rice::Module&)::$_5, true>::call(int, unsigned long*, unsigned long) in routing.o
  "google::protobuf::internal::ThreadSafeArena::thread_cache_", referenced from:
      void google::protobuf::RepeatedField<int>::InternalDeallocate<false>() in constraint.o
  "google::protobuf::internal::protobuf_assumption_failed(char const*, char const*, int)", referenced from:
      void google::protobuf::RepeatedField<int>::InternalDeallocate<false>() in constraint.o
  "google::protobuf::internal::ThreadSafeArena::SpaceAllocated() const", referenced from:
      google::protobuf::RepeatedField<int>::~RepeatedField() in constraint.o
ld: symbol(s) not found for architecture arm64

[gelldur]

Checkout what you are linking (error message + context) in my case (on linux I had /usr/lib/libutf8_range.a and probably it should be not my system lib but rather one that I build from protobuf.

My install dir: ${PREBUILD_PATH}/google/install-RelWithDebInfo/lib/libutf8_range.a

In my case what helped: (remember to clean cmake generated folder to not have any issues with cached values)
Preappend search path for find_package e.g. (in your cmake file or you may pass in command line for cmake)

list(PREPEND CMAKE_PREFIX_PATH "${PREBUILD_GITHUB_GOOGLE}") # Path where you installed stuff e.g. protobuf

Hacky solution is to find utf8_range package before protobuf

find_package(utf8_range        REQUIRED CONFIG PATHS ${PREBUILD_GITHUB_GOOGLE} NO_DEFAULT_PATH)
find_package(protobuf 	23.1.0 REQUIRED CONFIG PATHS ${PREBUILD_GITHUB_GOOGLE} NO_DEFAULT_PATH)

# You may debug with:
get_property(UTFLIB_LOCATION TARGET utf8_range::utf8_validity PROPERTY LOCATION)
message(WARNING "utf8 lib location: ${fancy_lib_location}")

And check cmake messages.