Iot in Library ( Export ) error

[autoprog]

hi,
I have a win32 dynamic dll that I use and it works fine.
now add IoT to this dll, or create a new one and keep the old functions with Export win32.
see dynamic:
LIBRARY
EXPORTS
f01 @1
f02 @2...
LoadLibrary(""); whth c++/c# program ok.

now Im thying

cmake CMakeLists.txt

         cmake_minimum_required(VERSION 3.1)
         project(iot CXX)

        include(GenerateExportHeader)
        file(GLOB SRC_FILES
        "*.cpp"
        "../../utils/CommandLineUtils.cpp"
        "../../utils/CommandLineUtils.h"
                )
        add_library(${PROJECT_NAME} SHARED ${SRC_FILES})
        generate_export_header(${PROJECT_NAME})
        set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 14)
        #set warnings
        if (MSVC)
            target_compile_options(${PROJECT_NAME} PRIVATE /W4 /WX /wd4068)
        else ()
            target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wno-long-long -pedantic -Werror)
        endif ()
        find_package(aws-crt-cpp REQUIRED)
        target_link_libraries(${PROJECT_NAME} AWS::aws-crt-cpp)

project create ok, open VS2019
compiling x64 ok
Loadlibrary.... runing Thread ok

problems,
add fucntions Export , file.def
c++ console Loadlibrary call no return, Error,

c# gui loadlibrary error: Message=No compatible export signature was found in DLL

how to,
add iot in my old Library,
or solved probelms x64 to Eport Win32.
or create library x86 win32.

Executable sample pubsub run ok.

thanks,
Carlos.

[jmklix]

I'm not exactly sure what you are trying to do. Are you trying to cross compile this? Can you include more of the error logs that you are getting?

[jmklix]

Have you tried following this guide from Microsoft about how to create a dynamic library project? If so what steps are you having problems with?

[autoprog]

hello, read my first post, where I write saying,
that I use an old library that works great in c++.

and today I want to update the project, add AWS-IOT function.

i jpa created a new project, compiled everything ok.

the problem is not in the IOT, but in exporting the function.
that the x64 SDK to compile successfully,

but my functions need to be Win32.

how to add sdk functions an project there is.
how to add sdk to a dynamic library, i have source code.
or, how to create dynamic library that works with (Export Win32).

thanks,
Carlos.

[jmklix]

What commands are you using to build this sdk?

[autoprog]

hi jmlix,

I don't remember anymore.
I had to stop the project from adding the MQTT sdk in a DLL I use,
and go back and use M2Mqtt.
Today I build a c++ DLL that loads a DLL with M2Mqtt to solve my problem.

SDK c++ to add in c++ application is easy, to use in a c++ library I couldn't.

thanks,
Carlos.

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.