Refactor and fixes Python binding

Python binding was broke since commit b1f37a8. This is a fix and to some degree a refactor. The binding build is now integrated. Controlled by the CMake QTERMWIDGET_BUILD_PYTHON_BINDING option. CMake components taken from https://cgit.kde.org/pykde5.git/. No need to reinvent the wheel. Closes https://github.com/lxqt/qtermwidget/issues/135.
2018-04-24 11:42:10 +01:00
parent 4cc05f9899
commit 3ba895f573
17 changed files with 537 additions and 226 deletions
@@ -0,0 +1,73 @@
+# Find Python
+# ~~~~~~~~~~~
+# Find the Python interpreter and related Python directories.
+#
+# This file defines the following variables:
+#
+# PYTHON_EXECUTABLE - The path and filename of the Python interpreter.
+#
+# PYTHON_SHORT_VERSION - The version of the Python interpreter found,
+#     excluding the patch version number. (e.g. 2.5 and not 2.5.1))
+#
+# PYTHON_LONG_VERSION - The version of the Python interpreter found as a human
+#     readable string.
+#
+# PYTHON_SITE_PACKAGES_INSTALL_DIR - this cache variable can be used for installing
+#                              own python modules. You may want to adjust this to be the
+#                              same as ${PYTHON_SITE_PACKAGES_DIR}, but then admin
+#                              privileges may be required for installation.
+#
+# PYTHON_SITE_PACKAGES_DIR - Location of the Python site-packages directory.
+#
+# PYTHON_INCLUDE_PATH - Directory holding the python.h include file.
+#
+# PYTHON_LIBRARY, PYTHON_LIBRARIES- Location of the Python library.
+
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Copyright (c) 2012, Luca Beltrame <lbeltrame@kde.org>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+include(FindPackageHandleStandardArgs)
+
+find_package(PythonInterp)
+
+if (PYTHONINTERP_FOUND)
+
+    option(INSTALL_PYTHON_FILES_IN_PYTHON_PREFIX "Install the Python files in the Python packages dir" FALSE)
+
+    # Set the Python libraries to what we actually found for interpreters
+    set(Python_ADDITIONAL_VERSIONS "${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
+    # These are kept for compatibility
+    set(PYTHON_SHORT_VERSION "${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
+    set(PYTHON_LONG_VERSION ${PYTHON_VERSION_STRING})
+
+    find_package(PythonLibs QUIET)
+
+    if(PYTHONLIBS_FOUND)
+        set(PYTHON_LIBRARY ${PYTHON_LIBRARIES})
+    endif(PYTHONLIBS_FOUND)
+
+    # Auto detect Python site-packages directory
+    execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(True))"
+                    OUTPUT_VARIABLE PYTHON_SITE_PACKAGES_DIR
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                   )
+
+    message(STATUS "Python system site-packages directory: ${PYTHON_SITE_PACKAGES_DIR}")
+    if(INSTALL_PYTHON_FILES_IN_PYTHON_PREFIX)
+        set(PYTHON_SITE_PACKAGES_INSTALL_DIR ${PYTHON_SITE_PACKAGES_DIR})
+    else()
+        execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(True, prefix='${CMAKE_INSTALL_PREFIX}'))"
+                        OUTPUT_VARIABLE PYTHON_SITE_PACKAGES_INSTALL_DIR
+                        OUTPUT_STRIP_TRAILING_WHITESPACE
+                       )
+    endif()
+
+    if(NOT PYTHON_SITE_PACKAGES_INSTALL_DIR STREQUAL PYTHON_SITE_PACKAGES_DIR)
+        message(STATUS "The Python files will be installed to ${PYTHON_SITE_PACKAGES_INSTALL_DIR}. Make sure to add them to the Python search path (e.g. by setting PYTHONPATH)")
+    endif()
+
+endif(PYTHONINTERP_FOUND)
+
+find_package_handle_standard_args(PythonLibrary DEFAULT_MSG PYTHON_LIBRARY)