Search code examples
cmakeclionmysql-connectormysql-connector-c

Crazy error when running a connector c++ program

I have a problem with Connector/C++. I'm using CLion as IDE and want to create a c++ program to interact with mysql database. this is my CMakeList.txt file which i include c++/connector static and dynamic libraries in it:

cmake_minimum_required(VERSION 3.15)
project(cpp_programming)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(MYSQL_CPPCONN_DIR "C:/Program Files/MySQL/MySQL Connector C++ 8.0")

include_directories(${PROJECT_NAME} PUBLIC ${MYSQL_CPPCONN_DIR}/include)
add_executable(${PROJECT_NAME} main.cpp)

# Static Libraries
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/libcrypto.lib)
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/libssl.lib)
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/mysqlcppconn.lib)
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/mysqlcppconn8.lib)
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/mysqlcppconn8-static.lib)
target_link_libraries(${PROJECT_NAME} ${MYSQL_CPPCONN_DIR}/lib64/vs14/mysqlcppconn-static.lib)

# Dynamic Link Libraries
target_link_libraries(${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/libcrypto-1_1-x64.dll)
target_link_libraries(${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/libssl-1_1-x64.dll)
target_link_libraries(${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/mysqlcppconn-7-vs14.dll)
target_link_libraries(${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/mysqlcppconn8-2-vs14.dll)

And i just include xdevapi.h header in my c++ source file like this:

#include <iostream>
#include <mysqlx/xdevapi.h>

using namespace std;

int main()
{
    return 0;
}

And i run file in Release mode in clion and i receive these errors:

Error message i see in the clion console

====================[ Build | cpp_programming | Release ]=======================
"C:\Program Files\JetBrains\CLion 2019.3.2\bin\cmake\win\bin\cmake.exe" --build C:\Users\Kianoush\CLionProjects\cpp_programming\cmake-build-release --target cpp_programming -- -j 2
Scanning dependencies of target cpp_programming
[ 50%] Building CXX object CMakeFiles/cpp_programming.dir/main.cpp.obj
[100%] Linking CXX executable cpp_programming.exe
CMakeFiles\cpp_programming.dir/objects.a(main.cpp.obj):main.cpp:(.text$_ZNK6mysqlx4abi22r05Value5printERSo[_ZNK6mysqlx4abi22r05Value5printERSo]+0x21): undefined reference to `mysqlx::abi2::r0::DbDoc::print(std::ostream&) const'
CMakeFiles\cpp_programming.dir/objects.a(main.cpp.obj):main.cpp:(.text$_ZNK6mysqlx4abi22r05Value5printERSo[_ZNK6mysqlx4abi22r05Value5printERSo]+0x2c): undefined reference to `mysqlx::abi2::r0::common::Value::print(std::ostream&) const'
CMakeFiles\cpp_programming.dir/objects.a(main.cpp.obj):main.cpp:(.text$_ZNK6mysqlx4abi22r08internal14Warning_detail5printERSo[_ZNK6mysqlx4abi22r08internal14Warning_detail5printERSo]+0x87): undefined reference to `mysqlx::abi2::r0::string::Impl::to_utf8[abi:cxx11](mysqlx::abi2::r0::string const&)'
CMakeFiles\cpp_programming.dir/objects.a(main.cpp.obj):main.cpp:(.rdata$_ZTCN6mysqlx4abi22r05ValueE0_NS1_6common5ValueE[_ZTCN6mysqlx4abi22r05ValueE0_NS1_6common5ValueE]+0x20): undefined reference to `mysqlx::abi2::r0::common::Value::print(std::ostream&) const'
CMakeFiles\cpp_programming.dir/objects.a(main.cpp.obj):main.cpp:(.rdata$.refptr._ZTVN6mysqlx4abi22r05DbDocE[.refptr._ZTVN6mysqlx4abi22r05DbDocE]+0x0): undefined reference to `vtable for mysqlx::abi2::r0::DbDoc'
collect2.exe: error: ld returned 1 exit status
CMakeFiles\cpp_programming.dir\build.make:97: recipe for target 'cpp_programming.exe' failed
CMakeFiles\Makefile2:74: recipe for target 'CMakeFiles/cpp_programming.dir/all' failed
CMakeFiles\Makefile2:81: recipe for target 'CMakeFiles/cpp_programming.dir/rule' failed
mingw32-make.exe[3]: *** [cpp_programming.exe] Error 1
mingw32-make.exe[2]: *** [CMakeFiles/cpp_programming.dir/all] Error 2
mingw32-make.exe[1]: *** [CMakeFiles/cpp_programming.dir/rule] Error 2
mingw32-make.exe: *** [cpp_programming] Error 2
Makefile:117: recipe for target 'cpp_programming' failed

Do i make mistakes in linking dll files or static files ?

What solution do you suggest ?

please help me, this take me in trouble for many days.

Full screen image

Solution

  • There are a couple of issues here.

    1. You do not need to link all of these different libraries. You really only should require one mysqlcppconn library to be linked. To locate the library, try using find_library(), and use it for linking instead. Your CMake file should reduce to something like this:
    cmake_minimum_required(VERSION 3.15)
project(cpp_programming)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(MYSQL_CPPCONN_DIR "C:/Program Files/MySQL/MySQL Connector C++ 8.0")

include_directories(${PROJECT_NAME} PUBLIC ${MYSQL_CPPCONN_DIR}/include)
add_executable(${PROJECT_NAME} main.cpp)

# Find the mysqlcppconn library.
find_library(mysqlcppconn_LIB 
    mysqlcppconn8 
    HINTS ${MYSQL_CPPCONN_DIR}/lib/vs14

# Static Libraries
target_link_libraries(${PROJECT_NAME} PUBLIC ${mysqlcppconn_LIB})

    I'm not sure if you are using the ssl and crypto libraries, so add those back in if needed.

    1. Your libraries (VisualC++) do not match the compiler (MinGW) you are using. To my knowledge, the MySQL Connector C++ downloads do not provide a MinGW set of libraries; they only provide libraries that are built with the Visual Studio compiler. Thus, you need to switch to use the VisualC++ compiler to use these libraries. Another option would be to download the MySQL source and try to build it with MinGW, but that may be more difficult.

    Hope this helps!