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https://github.com/logos-messaging/nim-ffi.git
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51 lines
2.0 KiB
CMake
51 lines
2.0 KiB
CMake
cmake_minimum_required(VERSION 3.14)
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project(my_timer_cpp_bindings CXX C)
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# The generated bindings target C++20: designated initializers and other
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# C++20 constructs are used throughout the emitted code.
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# MSVC defaults __cplusplus to 199711L regardless of the active /std:c++XX
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# level — the generated header's C++20 guard would then misfire. /Zc:__cplusplus
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# makes MSVC report the actual standard. Harmless on every other compiler.
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if(MSVC)
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add_compile_options(/Zc:__cplusplus)
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endif()
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# ── Locate the repository root (contains ffi.nimble) ─────────────────────────
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set(_search_dir "${CMAKE_CURRENT_SOURCE_DIR}")
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set(REPO_ROOT "")
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foreach(_i RANGE 10)
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if(EXISTS "${_search_dir}/ffi.nimble")
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set(REPO_ROOT "${_search_dir}")
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break()
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endif()
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get_filename_component(_search_dir "${_search_dir}" DIRECTORY)
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endforeach()
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if("${REPO_ROOT}" STREQUAL "")
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message(FATAL_ERROR "Cannot find repo root (no ffi.nimble in any ancestor)")
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endif()
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# Build the Nim dylib + vendored TinyCBOR (shared with the C backend).
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set(NIM_FFI_LIB my_timer)
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set(NIM_FFI_SRC ../timer.nim)
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include("${REPO_ROOT}/ffi/codegen/templates/nim_ffi_lib.cmake")
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add_library(my_timer_headers INTERFACE)
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target_include_directories(my_timer_headers INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
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target_link_libraries(my_timer_headers INTERFACE my_timer tinycbor)
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if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/main.cpp")
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add_executable(my_timer_example main.cpp)
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target_link_libraries(my_timer_example PRIVATE my_timer_headers)
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add_dependencies(my_timer_example my_timer_nim_lib)
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if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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add_custom_command(TARGET my_timer_example POST_BUILD
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COMMAND "${CMAKE_COMMAND}" -E copy_if_different
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"${my_timer_RUNTIME_LIB}"
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"$<TARGET_FILE_DIR:my_timer_example>"
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COMMENT "Staging my_timer.dll next to my_timer_example.exe")
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endif()
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endif()
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