Cross Compile C++ program from Windows to Raspberry Pi 4 - c++

Question

I am trying to compile a simple program made in C++ from windows to my raspberry pi 4 B.
For that I use Cmake but I don't know what to use to compile the program. Visual Studio it seems can compile Arm and Arm64 but according to the documentation, the Rp4 is in ArmV8 and when I do uname -m on the Rp4 I get armv71. I don't know what to indicate in CMakeLists.txt
cmake_minimum_required(VERSION 3.14)
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)
set(CMAKE_SYSROOT /home/devel/rasp-pi-rootfs)
set(CMAKE_STAGING_PREFIX /home/devel/stage)
set(tools /home/devel/gcc-4.7-linaro-rpi-gnueabihf)
set(CMAKE_C_COMPILER ${tools}/bin/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER ${tools}/bin/arm-linux-gnueabihf-g++)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
project(SCWWS CXX)
#=================== INCLUSION OF Project Files ====================#
set(FORMS_DIR "${CMAKE_SOURCE_DIR}/forms")
set(INCLUDE_DIR "${CMAKE_SOURCE_DIR}/include")
set(SOURCE_DIR "${CMAKE_SOURCE_DIR}/src")
include_directories(${FORMS_DIR})
include_directories(${INCLUDE_DIR})
include_directories(${SOURCE_DIR})
file(GLOB_RECURSE SOURCES
"${INCLUDE_DIR}/*.h"
"${SOURCE_DIR}/*.cpp"
)
#=================== SETUP EXECTUABLE ====================#
# Add the executable
add_executable(SCWWS ${SOURCES})
# Add the target includes for SCWWS
target_include_directories(SCWWS PRIVATE ${FORMS_DIR})
target_include_directories(SCWWS PRIVATE ${INCLUDE_DIR})
target_include_directories(SCWWS PRIVATE ${SOURCE_DIR})
When I run my program on the Rp4 I get this error:
-bash: ./SCWWS: cannot execute binary file: Exec format error
For now, here is the cpp code that I am compiling:
#include <iostream>
using namespace std;
int main(){
cout << "Hello World !";
return 0;
}
For later, I would like to make a Qt application, will there be anything else to do?