CMake project compilation error on VisualStudio using external SDK toolchain file

Question

I am using VisualStudio CMake project on Windows machine.

I am using an external SDK in order to

Answer 1

When you use a toolchain file, you shouldn't set the compiler yourself. You should let it to the toolchain file, as it know how to cross compile. Things like CMAKE_SYSTEM_NAME and CMAKE_SYSTEM_PROCESSOR should be left to the toolchain file.

set(Boost_USE_STATIC_LIBS ON) 
set(Boost_USE_MULTITHREADED OFF)  
set(Boost_USE_STATIC_RUNTIME OFF)
set(Boost_NO_BOOST_CMAKE ON)

# I think the prefix should point to usr directly, not the include directory
list(APPEND CMAKE_PREFIX_PATH /opt/poky-atmel/2.5.3/sysroots/cortexa5hf-neon-poky-linux-gnueabi/usr)

message(STATUS "CMAKE_TOOLCHAIN_FILE='${CMAKE_TOOLCHAIN_FILE}'")
message(STATUS "CMAKE_C_COMPILER='${CMAKE_C_COMPILER}'")
message(STATUS "CMAKE_CXX_COMPILER='${CMAKE_CXX_COMPILER}'")

project(whatever CXX)

# Better to fail fast when there's a package missing
find_package(Boost 1.66.0 REQUIRED) 

add_executable (CMakeProject4 CMakeProject4.cpp CMakeProject4.h) 
target_link_libraries(CMakeProject4 PRIVATE Boost::headers)

And your CMake arguments should look like this:

cmake -DCMAKE_TOOLCHAIN_FILE=/opt/poky-atmel/2.5.3/sysroots/x86_64-pokysdk-linux/usr/share/cmake/OEToolchainConfig.cmake