CMake: bump the minimal required version to 3.5

[libftdi] / python / CMakeLists.txt

diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 7bdd9f9..9358419 100644 (file)
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -1,5 +1,11 @@
+# swig_add_library behavior changed in cmake 3.13 to no longer set
+# SWIG_MODULE_<target>_REAL_NAME, so restore the old behavior.
+if ( POLICY CMP0078 )
+  cmake_policy( SET CMP0078 OLD )
+endif ()
+
 # workaround for cmake bug #0013449
-if ( NOT DEFINED CMAKE_FIND_ROOT_PATH OR CMAKE_VERSION VERSION_GREATER_EQUAL 3.0.0 )
+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 )
@@ -8,18 +14,24 @@ else ()
     set ( SWIG_FOUND TRUE )
   endif ()
 endif ()
-find_package ( PythonLibs REQUIRED )
 find_package ( PythonInterp REQUIRED )
+find_package ( PythonLibs REQUIRED )
 
 include ( UseSWIG )
-include_directories ( BEFORE ${CMAKE_SOURCE_DIR}/src )
+include_directories ( BEFORE ${PROJECT_SOURCE_DIR}/src )
 include_directories ( ${PYTHON_INCLUDE_DIRS} )
 link_directories ( ${CMAKE_CURRENT_BINARY_DIR}/../src )
 
 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()
+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_add_module ( ftdi1 python ftdi1.i )
 swig_link_libraries ( ftdi1 ftdi1 )
 
 if ( LINK_PYTHON_LIBRARY )
@@ -30,7 +42,7 @@ endif ()
 
 set_target_properties ( ${SWIG_MODULE_ftdi1_REAL_NAME} 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}' ) )"
+execute_process ( COMMAND ${PYTHON_EXECUTABLE} -c "import sysconfig; print( sysconfig.get_path( 'platlib', vars={'platbase': '${CMAKE_INSTALL_PREFIX}'} ) )"
                   OUTPUT_VARIABLE _ABS_PYTHON_MODULE_PATH
                   OUTPUT_STRIP_TRAILING_WHITESPACE )
 
@@ -43,25 +55,29 @@ install ( FILES ${CMAKE_CURRENT_BINARY_DIR}/ftdi1.py DESTINATION ${PYTHON_MODULE
 install ( TARGETS ${SWIG_MODULE_ftdi1_REAL_NAME} LIBRARY DESTINATION ${PYTHON_MODULE_PATH} )
 
 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}
-    )
+  # Run doxygen to only generate the xml
+  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
-            ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
-        DEPENDS ${CMAKE_BINARY_DIR}/doc/xml/ftdi_8c.xml
-    )
-    add_custom_target ( doc_i DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i )
-    add_dependencies( ${SWIG_MODULE_ftdi1_REAL_NAME} doc_i )
+  # 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
+      ${PROJECT_BINARY_DIR}/doc/xml/ftdi_8c.xml
+      ${CMAKE_CURRENT_BINARY_DIR}/ftdi1_doc.i
+    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_dependencies( ${SWIG_MODULE_ftdi1_REAL_NAME} 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