[RtMidi] - Unresolved symbol, LNK2001 Errors about vcpkg

[MonicaLiu0311]

I haven't reproduced your problem, could you please provide a reproduction code?

[medcelerate]

Yes See Below. This is not the full program code but only what pertains to RtMidi. I'm using vcpkg.json and via cli and they both produce the linking error.

#include <gl/glew.h>
#include <GLFW/glfw3.h>

#define GLFW_EXPOSE_NATIVE_WIN32
#define GLFW_EXPOSE_NATIVE_WGL

#define NOMINMAX

#include <GLFW/glfw3native.h>
#include <spdlog/spdlog.h>
#include <zmq.hpp>
#include <rtmidi/RtMidi.h>

 std::unique_ptr<RtMidiIn> midiin;

    //Setup RtMidi
    try {
        midiin.reset(new RtMidiIn());
    }
    catch (RtMidiError& error) {
        // Handle the exception here
        log("error", error.what());

    }

    // Check available ports.
    unsigned int nPorts = midiin->getPortCount();
    if (nPorts == 0) {
		log("error", "No MIDI ports found, operating in freerun");
        midiin.reset();
    }
    else {


        // Open first available port.
        midiin->openPort(0);

        // Don't ignore sysex, timing, or
        // active sensing messages.
        midiin->ignoreTypes(true, false, true);

    }

[MonicaLiu0311]

I haven't reproduced your issue as follows:

1> CMake generation started for configuration: 'x64-Debug'.
1> Command line: "C:\Windows\system32\cmd.exe" /c "%SYSTEMROOT%\System32\chcp.com 65001 >NUL && "C:\PROGRAM FILES\MICROSOFT VISUAL STUDIO\2022\ENTERPRISE\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\CMake\bin\cmake.exe"  -G "Visual Studio 17 2022" -A x64  -DCMAKE_CONFIGURATION_TYPES:STRING="Debug" -DCMAKE_INSTALL_PREFIX:PATH="C:\Users\monica\source\repos\CMakeUsage\out\install\x64-Debug" -DVCPKG_TARGET_TRIPLET:STRING="x64-windows-static"  -DCMAKE_TOOLCHAIN_FILE=G:/vcpkg/scripts/buildsystems/vcpkg.cmake "C:\Users\monica\source\repos\CMakeUsage" 2>&1"
1> Working directory: C:\Users\monica\source\repos\CMakeUsage\out\build\x64-Debug
1> [CMake] -- Selecting Windows SDK version 10.0.22621.0 to target Windows 10.0.19045.
1> [CMake] -- The C compiler identification is MSVC 19.38.33135.0
1> [CMake] -- The CXX compiler identification is MSVC 19.38.33135.0
1> [CMake] -- Detecting C compiler ABI info
1> [CMake] -- Detecting C compiler ABI info - done
1> [CMake] -- Check for working C compiler: C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Tools/MSVC/14.38.33130/bin/Hostx64/x64/cl.exe - skipped
1> [CMake] -- Detecting C compile features
1> [CMake] -- Detecting C compile features - done
1> [CMake] -- Detecting CXX compiler ABI info
1> [CMake] -- Detecting CXX compiler ABI info - done
1> [CMake] -- Check for working CXX compiler: C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Tools/MSVC/14.38.33130/bin/Hostx64/x64/cl.exe - skipped
1> [CMake] -- Detecting CXX compile features
1> [CMake] -- Detecting CXX compile features - done
1> [CMake] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
1> [CMake] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
1> [CMake] -- Looking for pthread_create in pthreads
1> [CMake] -- Looking for pthread_create in pthreads - not found
1> [CMake] -- Looking for pthread_create in pthread
1> [CMake] -- Looking for pthread_create in pthread - not found
1> [CMake] -- Found Threads: TRUE  
1> [CMake] -- Configuring done (11.7s)
1> [CMake] -- Generating done (0.1s)
1> [CMake] -- Build files have been written to: C:/Users/monica/source/repos/CMakeUsage/out/build/x64-Debug
1> Extracted CMake variables.
1> Extracted source files and headers.
1> Extracted code model.
1> Extracted toolchain configurations.
1> Extracted includes paths.
1> CMake generation finished.

>------ Build All started: Project: CMakeUsage, Configuration: x64-Debug ------
  MSBuild version 17.8.5+b5265ef37 for .NET Framework
  
    1>Checking Build System
    Building Custom Rule C:/Users/monica/source/repos/CMakeUsage/CMakeUsage/CMakeLists.txt
    CMakeUsage.cpp
    main.vcxproj -> C:\Users\monica\source\repos\CMakeUsage\out\build\x64-Debug\CMakeUsage\Debug\main.lib
    Building Custom Rule C:/Users/monica/source/repos/CMakeUsage/CMakeLists.txt

Build All succeeded.

test.cpp

#include <gl/glew.h>
#include <GLFW/glfw3.h>
#define GLFW_EXPOSE_NATIVE_WIN32

#define GLFW_EXPOSE_NATIVE_WGL
#define NOMINMAX
#include <GLFW/glfw3native.h>

#include <spdlog/spdlog.h>

#include <zmq.hpp>

#include <rtmidi/RtMidi.h>
void log(const std::string& level, const std::string& message) {

// Implement logging logic

// For example, use spdlog for logging

spdlog::info("{}: {}", level, message);

}
int main() {

std::unique_ptr midiin;
// Setup RtMidi
try {
    midiin.reset(new RtMidiIn());
}
catch (RtMidiError& error) {
    // Handle the exception here
    log("error", error.what());
}

// Check available ports.
unsigned int nPorts = midiin->getPortCount();
if (nPorts == 0) {
    log("error", "No MIDI ports found, operating in freerun");
    midiin.reset();
}
else {
    // Open first available port.
    midiin->openPort(0);

    // Don't ignore sysex, timing, or
    // active sensing messages.
    midiin->ignoreTypes(true, false, true);
}

return 0;

}

CMakeLists.txt

cmake_minimum_required (VERSION 3.8)
set(CMAKE_CXX_FLAGS " /std:c++17 /Zc:__cplusplus /EHsc ")
add_library (main "test.cpp")
find_package(rtmidi CONFIG REQUIRED)

target_link_libraries(main PRIVATE RtMidi::rtmidi)
find_package(GLEW REQUIRED)

target_link_libraries(main PRIVATE GLEW::GLEW)
find_package(cppzmq CONFIG REQUIRED)

target_link_libraries(main PRIVATE cppzmq cppzmq-static)
find_package(spdlog CONFIG REQUIRED)

target_link_libraries(main PRIVATE spdlog::spdlog)
find_package(glfw3 CONFIG REQUIRED)

target_link_libraries(main PRIVATE glfw)

CMakeSettings.json

{
  "configurations": [
    {
      "name": "x64-Debug",
      "generator": "Visual Studio 17 2022 Win64",
      "configurationType": "Debug",
      "inheritEnvironments": [ "msvc_x64_x64" ],
      "buildRoot": "${projectDir}\\out\\build\\${name}",
      "installRoot": "${projectDir}\\out\\install\\${name}",
      "cmakeCommandArgs": "-DCMAKE_TOOLCHAIN_FILE=G:/vcpkg/scripts/buildsystems/vcpkg.cmake",
      "buildCommandArgs": "",
      "ctestCommandArgs": "",
      "variables": [
        {
          "name": "VCPKG_TARGET_TRIPLET",
          "value": "x64-windows-static"
        }
      ]
    }
  ]
}

[medcelerate]

Strange, it still exhibits the odd linking behavior for me. Let me try another project.

[JackBoosY]

Ref https://learn.microsoft.com/en-us/windows/win32/api/mmeapi/nf-mmeapi-midioutgetnumdevs

Winmm.lib should be linked in the cmake export files, @MonicaLiu0311 please check this.