import quincy 17.2.0

[ceph.git] / ceph / src / arrow / cpp / cmake_modules / FindPython3Alt.cmake

diff --git a/ceph/src/arrow/cpp/cmake_modules/FindPython3Alt.cmake b/ceph/src/arrow/cpp/cmake_modules/FindPython3Alt.cmake
new file mode 100644 (file)
index 0000000..ab91c7b
--- /dev/null
+++ b/ceph/src/arrow/cpp/cmake_modules/FindPython3Alt.cmake
@@ -0,0 +1,96 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# This module finds the libraries corresponding to the Python 3 interpreter
+# and the NumPy package, and sets the following variables:
+# - PYTHON_EXECUTABLE
+# - PYTHON_INCLUDE_DIRS
+# - PYTHON_LIBRARIES
+# - PYTHON_OTHER_LIBS
+# - NUMPY_INCLUDE_DIRS
+
+# Need CMake 3.15 or later for Python3_FIND_STRATEGY
+if(${CMAKE_VERSION} VERSION_LESS "3.15.0")
+  # Use deprecated Python- and NumPy-finding code
+  if(Python3Alt_FIND_REQUIRED)
+    find_package(PythonLibsNew REQUIRED)
+    find_package(NumPy REQUIRED)
+  else()
+    find_package(PythonLibsNew)
+    find_package(NumPy)
+  endif()
+  find_package_handle_standard_args(
+    Python3Alt REQUIRED_VARS PYTHON_EXECUTABLE PYTHON_INCLUDE_DIRS NUMPY_INCLUDE_DIRS)
+  return()
+endif()
+
+if(${CMAKE_VERSION} VERSION_LESS "3.18.0" OR ARROW_BUILD_TESTS)
+  # When building arrow-python-test, we need libpython to be present, so ask for
+  # the full "Development" component.  Also ask for it on CMake < 3.18,
+  # where "Development.Module" is not available.
+  if(Python3Alt_FIND_REQUIRED)
+    find_package(Python3
+                 COMPONENTS Interpreter Development NumPy
+                 REQUIRED)
+  else()
+    find_package(Python3 COMPONENTS Interpreter Development NumPy)
+  endif()
+else()
+  if(Python3Alt_FIND_REQUIRED)
+    find_package(Python3
+                 COMPONENTS Interpreter Development.Module NumPy
+                 REQUIRED)
+  else()
+    find_package(Python3 COMPONENTS Interpreter Development.Module NumPy)
+  endif()
+endif()
+
+if(NOT Python3_FOUND)
+  return()
+endif()
+
+set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
+set(PYTHON_INCLUDE_DIRS ${Python3_INCLUDE_DIRS})
+set(PYTHON_LIBRARIES ${Python3_LIBRARIES})
+set(PYTHON_OTHER_LIBS)
+
+get_target_property(NUMPY_INCLUDE_DIRS Python3::NumPy INTERFACE_INCLUDE_DIRECTORIES)
+
+# CMake's python3_add_library() doesn't apply the required extension suffix,
+# detect it ourselves.
+# (https://gitlab.kitware.com/cmake/cmake/issues/20408)
+execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
+                        "from distutils import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))"
+                RESULT_VARIABLE _PYTHON_RESULT
+                OUTPUT_VARIABLE _PYTHON_STDOUT
+                ERROR_VARIABLE _PYTHON_STDERR)
+
+if(NOT _PYTHON_RESULT MATCHES 0)
+  if(Python3Alt_FIND_REQUIRED)
+    message(FATAL_ERROR "Python 3 config failure:\n${_PYTHON_STDERR}")
+  endif()
+endif()
+
+string(STRIP ${_PYTHON_STDOUT} _EXT_SUFFIX)
+
+function(PYTHON_ADD_MODULE name)
+  python3_add_library(${name} MODULE ${ARGN})
+  set_target_properties(${name} PROPERTIES SUFFIX ${_EXT_SUFFIX})
+endfunction()
+
+find_package_handle_standard_args(
+  Python3Alt REQUIRED_VARS PYTHON_EXECUTABLE PYTHON_INCLUDE_DIRS NUMPY_INCLUDE_DIRS)