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fix(cmake): support cross-compiles with classic Python (#3959)
Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
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@ -151,26 +151,36 @@ if(NOT _PYTHON_SUCCESS MATCHES 0)
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return()
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endif()
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# Can manually set values when cross-compiling
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macro(_PYBIND11_GET_IF_UNDEF lst index name)
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if(NOT DEFINED "${name}")
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list(GET "${lst}" "${index}" "${name}")
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endif()
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endmacro()
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# Convert the process output into a list
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if(WIN32)
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string(REGEX REPLACE "\\\\" "/" _PYTHON_VALUES ${_PYTHON_VALUES})
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endif()
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string(REGEX REPLACE ";" "\\\\;" _PYTHON_VALUES ${_PYTHON_VALUES})
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string(REGEX REPLACE "\n" ";" _PYTHON_VALUES ${_PYTHON_VALUES})
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list(GET _PYTHON_VALUES 0 _PYTHON_VERSION_LIST)
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list(GET _PYTHON_VALUES 1 PYTHON_PREFIX)
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list(GET _PYTHON_VALUES 2 PYTHON_INCLUDE_DIR)
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list(GET _PYTHON_VALUES 3 PYTHON_SITE_PACKAGES)
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list(GET _PYTHON_VALUES 4 PYTHON_MODULE_EXTENSION)
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list(GET _PYTHON_VALUES 5 PYTHON_IS_DEBUG)
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list(GET _PYTHON_VALUES 6 PYTHON_SIZEOF_VOID_P)
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list(GET _PYTHON_VALUES 7 PYTHON_LIBRARY_SUFFIX)
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list(GET _PYTHON_VALUES 8 PYTHON_LIBDIR)
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list(GET _PYTHON_VALUES 9 PYTHON_MULTIARCH)
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_pybind11_get_if_undef(_PYTHON_VALUES 0 _PYTHON_VERSION_LIST)
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_pybind11_get_if_undef(_PYTHON_VALUES 1 PYTHON_PREFIX)
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_pybind11_get_if_undef(_PYTHON_VALUES 2 PYTHON_INCLUDE_DIR)
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_pybind11_get_if_undef(_PYTHON_VALUES 3 PYTHON_SITE_PACKAGES)
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_pybind11_get_if_undef(_PYTHON_VALUES 4 PYTHON_MODULE_EXTENSION)
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_pybind11_get_if_undef(_PYTHON_VALUES 5 PYTHON_IS_DEBUG)
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_pybind11_get_if_undef(_PYTHON_VALUES 6 PYTHON_SIZEOF_VOID_P)
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_pybind11_get_if_undef(_PYTHON_VALUES 7 PYTHON_LIBRARY_SUFFIX)
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_pybind11_get_if_undef(_PYTHON_VALUES 8 PYTHON_LIBDIR)
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_pybind11_get_if_undef(_PYTHON_VALUES 9 PYTHON_MULTIARCH)
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# Make sure the Python has the same pointer-size as the chosen compiler
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# Skip if CMAKE_SIZEOF_VOID_P is not defined
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if(CMAKE_SIZEOF_VOID_P AND (NOT "${PYTHON_SIZEOF_VOID_P}" STREQUAL "${CMAKE_SIZEOF_VOID_P}"))
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# This should be skipped for (non-Apple) cross-compiles (like EMSCRIPTEN)
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if(NOT CMAKE_CROSSCOMPILING
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AND CMAKE_SIZEOF_VOID_P
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AND (NOT "${PYTHON_SIZEOF_VOID_P}" STREQUAL "${CMAKE_SIZEOF_VOID_P}"))
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if(PythonLibsNew_FIND_REQUIRED)
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math(EXPR _PYTHON_BITS "${PYTHON_SIZEOF_VOID_P} * 8")
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math(EXPR _CMAKE_BITS "${CMAKE_SIZEOF_VOID_P} * 8")
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