python/CMakeLists.txt: rework Python development files detection
[libftdi] / python / CMakeLists.txt
index 494f6ff..d312fae 100644 (file)
@@ -1,79 +1,74 @@
-# swig_add_library behavior changed in cmake 3.13 and SWIG_MODULE_<target>_REAL_NAME
-# is no longer set by default so set policy to the old behavior.
-if(NOT CMAKE_VERSION VERSION_LESS 3.13.0)
-  cmake_policy(SET CMP0078 OLD)
-endif ()
-
 # workaround for cmake bug #0013449
-if ( NOT DEFINED CMAKE_FIND_ROOT_PATH OR NOT CMAKE_VERSION VERSION_LESS 3.0.0 )
-  find_package ( SWIG REQUIRED )
+if (NOT DEFINED CMAKE_FIND_ROOT_PATH OR NOT CMAKE_VERSION VERSION_LESS 3.0.0)
+    find_package(SWIG REQUIRED)
 else ()
-  find_program ( SWIG_EXECUTABLE NAMES swig2.0 swig )
-  if ( SWIG_EXECUTABLE )
-    set ( SWIG_USE_FILE ${CMAKE_ROOT}/Modules/UseSWIG.cmake )
-    set ( SWIG_FOUND TRUE )
-  endif ()
+    find_program(SWIG_EXECUTABLE NAMES swig2.0 swig)
+    if (SWIG_EXECUTABLE)
+        set(SWIG_USE_FILE ${CMAKE_ROOT}/Modules/UseSWIG.cmake)
+        set(SWIG_FOUND TRUE)
+    endif ()
 endif ()
-find_package ( PythonLibs REQUIRED )
-find_package ( PythonInterp REQUIRED )
+find_package(Python3 COMPONENTS Interpreter Development)
 
-include ( UseSWIG )
-include_directories ( BEFORE ${CMAKE_SOURCE_DIR}/src )
-include_directories ( ${PYTHON_INCLUDE_DIRS} )
-link_directories ( ${CMAKE_CURRENT_BINARY_DIR}/../src )
+include(UseSWIG)
+include_directories(BEFORE ${PROJECT_SOURCE_DIR}/src)
+include_directories(${Python3_INCLUDE_DIRS})
+link_directories(${CMAKE_CURRENT_BINARY_DIR}/../src)
 
-if ( DOCUMENTATION )
-  set(CMAKE_SWIG_FLAGS -DDOXYGEN=${DOXYGEN_FOUND})
-endif()
-if(NOT CMAKE_VERSION VERSION_LESS 3.8.0)
-  swig_add_library ( ftdi1 LANGUAGE python SOURCES ftdi1.i )
-else ()
-  swig_add_module ( ftdi1 python ftdi1.i )
-endif()
-swig_link_libraries ( ftdi1 ftdi1 )
+if (DOCUMENTATION)
+    set(CMAKE_SWIG_FLAGS -DDOXYGEN=${DOXYGEN_FOUND})
+    # manually add dependency for new cmake / swig versions
+    set_property(SOURCE ftdi1.i PROPERTY DEPENDS doc_i)
+endif ()
+swig_add_library(pyftdi1 LANGUAGE python SOURCES ftdi1.i)
+swig_link_libraries(pyftdi1 ftdi1)
 
-if ( LINK_PYTHON_LIBRARY )
-  swig_link_libraries ( ftdi1 ${PYTHON_LIBRARIES} )
-elseif( APPLE )
-  set_target_properties ( ${SWIG_MODULE_ftdi1_REAL_NAME} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup" )
+if (LINK_PYTHON_LIBRARY)
+    swig_link_libraries(pyftdi1 ${PYTHON_LIBRARIES})
+elseif (APPLE)
+    set_target_properties(pyftdi1 PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
 endif ()
 
-set_target_properties ( ${SWIG_MODULE_ftdi1_REAL_NAME} PROPERTIES NO_SONAME ON )
+set_target_properties(pyftdi1 PROPERTIES NO_SONAME ON)
 
-execute_process ( COMMAND ${PYTHON_EXECUTABLE} -c "from distutils import sysconfig; print( sysconfig.get_python_lib( plat_specific=True, prefix='${CMAKE_INSTALL_PREFIX}' ) )"
-                  OUTPUT_VARIABLE _ABS_PYTHON_MODULE_PATH
-                  OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process(COMMAND ${Python3_EXECUTABLE} -c "import sysconfig; print( sysconfig.get_path( 'platlib', vars={'platbase': '${CMAKE_INSTALL_PREFIX}'} ) )"
+        OUTPUT_VARIABLE _ABS_PYTHON_MODULE_PATH
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
 
-get_filename_component ( _ABS_PYTHON_MODULE_PATH ${_ABS_PYTHON_MODULE_PATH} ABSOLUTE )
-file ( RELATIVE_PATH _REL_PYTHON_MODULE_PATH ${CMAKE_INSTALL_PREFIX} ${_ABS_PYTHON_MODULE_PATH} )
+get_filename_component(_ABS_PYTHON_MODULE_PATH ${_ABS_PYTHON_MODULE_PATH} ABSOLUTE)
+file(RELATIVE_PATH _REL_PYTHON_MODULE_PATH ${CMAKE_INSTALL_PREFIX} ${_ABS_PYTHON_MODULE_PATH})
 
-set ( PYTHON_MODULE_PATH ${_REL_PYTHON_MODULE_PATH} )
+set(PYTHON_MODULE_PATH ${_REL_PYTHON_MODULE_PATH})
 
-install ( FILES ${CMAKE_CURRENT_BINARY_DIR}/ftdi1.py DESTINATION ${PYTHON_MODULE_PATH} )
-install ( TARGETS ${SWIG_MODULE_ftdi1_REAL_NAME} LIBRARY DESTINATION ${PYTHON_MODULE_PATH} )
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/ftdi1.py DESTINATION ${PYTHON_MODULE_PATH})
+install(TARGETS pyftdi1 LIBRARY DESTINATION ${PYTHON_MODULE_PATH})
 
-if ( DOCUMENTATION )
+if (DOCUMENTATION)
     # Run doxygen to only generate the xml
-    add_custom_command ( OUTPUT ${CMAKE_BINARY_DIR}/doc/xml/ftdi_8c.xml
-        COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/doc
-        COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile.xml
-        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-        DEPENDS ${c_headers};${c_sources};${cpp_sources};${cpp_headers}
+    add_custom_command(OUTPUT ${PROJECT_BINARY_DIR}/doc/xml/ftdi_8c.xml
+            COMMAND ${DOXYGEN_EXECUTABLE} ${PROJECT_BINARY_DIR}/doc/Doxyfile.xml
+            WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
+            COMMENT "Generating ftdi_8c.xml"
+            DEPENDS ${c_headers};${c_sources};${cpp_sources};${cpp_headers}
     )
 
     # generate .i from doxygen .xml
-    add_custom_command ( OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
-        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/doxy2swig.py -n
-            ${CMAKE_BINARY_DIR}/doc/xml/ftdi_8c.xml
+    add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
+            COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/doxy2swig.py -n
+            ${PROJECT_BINARY_DIR}/doc/xml/ftdi_8c.xml
             ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
-        DEPENDS ${CMAKE_BINARY_DIR}/doc/xml/ftdi_8c.xml
+            COMMENT "Generating ftdi1_doc.i from ftdi_8c.xml"
+            DEPENDS ${PROJECT_BINARY_DIR}/doc/xml/ftdi_8c.xml
+    )
+    add_custom_target(doc_i
+            COMMENT "Python API bindings documentation"
+            DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
     )
-    add_custom_target ( doc_i DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i )
-    add_dependencies( ${SWIG_MODULE_ftdi1_REAL_NAME} doc_i )
+    add_dependencies(pyftdi1 doc_i)
 
-endif ()
+endif (DOCUMENTATION)
 
-set ( LIBFTDI_PYTHON_MODULE_PATH ${CMAKE_INSTALL_PREFIX}/${PYTHON_MODULE_PATH} )
-set ( LIBFTDI_PYTHON_MODULE_PATH ${LIBFTDI_PYTHON_MODULE_PATH} PARENT_SCOPE ) # for ftdiconfig.cmake
+set(LIBFTDI_PYTHON_MODULE_PATH ${CMAKE_INSTALL_PREFIX}/${PYTHON_MODULE_PATH})
+set(LIBFTDI_PYTHON_MODULE_PATH ${LIBFTDI_PYTHON_MODULE_PATH} PARENT_SCOPE) # for ftdiconfig.cmake
 
-add_subdirectory ( examples )
+add_subdirectory(examples)