CMakeLists.txt

cmake_minimum_required(VERSION 3.18)

project(nns_native LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

find_package(Python COMPONENTS Interpreter Development.Module REQUIRED)
find_package(nanobind CONFIG REQUIRED)

set(NNSCORE_BUILD_TESTS OFF CACHE BOOL "Build NNS-core tests" FORCE)
set(NNSCORE_BUILD_PYTHON OFF CACHE BOOL "Build NNS-core Python bindings" FORCE)
add_subdirectory(extern/NNS-core)

# The Python extension is a shared object.  The vendored NNS-core target builds
# as a static library, so it must be compiled as position-independent code before
# it can be linked into the nanobind module on ELF platforms.
set_target_properties(nnscore PROPERTIES POSITION_INDEPENDENT_CODE ON)

nanobind_add_module(_nnscore src/nns/_nnscore_bindings.cpp)
target_link_libraries(_nnscore PRIVATE nnscore)
target_compile_features(_nnscore PRIVATE cxx_std_17)
install(TARGETS _nnscore LIBRARY DESTINATION nns)