FindPython: add capability to select python version for the tests

1 files changed, 66 insertions, 32 deletions

diff --git a/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt b/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
index 093e858..317ed47 100644
--- a/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
+++ b/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
@@ -7,9 +7,6 @@ include(CTest)
 find_package(SWIG REQUIRED)
 include(${SWIG_USE_FILE})
 
-find_package(Python2 REQUIRED COMPONENTS Interpreter Development)
-find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
-
 if (WIN32)
   set (PS $<SEMICOLON>)
 else()
@@ -25,32 +22,69 @@ set_property(SOURCE "../example.i" PROPERTY COMPILE_OPTIONS -includeall)
 set_property(SOURCE "../example.i"
   PROPERTY GENERATED_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_SOURCE_DIR}/..")
 
-swig_add_library(example1
-                 LANGUAGE python
-                 SOURCES ../example.i ../example.cxx)
-set_target_properties (example1 PROPERTIES
-  OUTPUT_NAME example
-  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2"
-  ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2"
-  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2")
-target_link_libraries(example1 PRIVATE Python2::Module)
-
-# re-use sample interface file for another plugin
-swig_add_library(example2
-                 LANGUAGE python
-                 SOURCES ../example.i ../example.cxx)
-set_target_properties (example2 PROPERTIES
-  OUTPUT_NAME example
-  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3"
-  ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3"
-  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3")
-target_link_libraries(example2 PRIVATE Python3::Module)
-
-
-add_test (NAME ModuleVersion2.example1
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example1,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example1>"
-  "${Python2_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
-
-add_test (NAME ModuleVersion2.example2
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example2,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example2>"
-  "${Python3_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
+if(CMake_TEST_FindPython2)
+  find_package(Python2 REQUIRED COMPONENTS Interpreter Development)
+
+  swig_add_library(example1
+                   LANGUAGE python
+                   SOURCES ../example.i ../example.cxx)
+  set_target_properties (example1 PROPERTIES
+    OUTPUT_NAME example
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-1"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-1"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-1")
+  target_link_libraries(example1 PRIVATE Python2::Module)
+
+  add_test (NAME ModuleVersion2.example1
+    COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example1,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example1>"
+    "${Python2_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
+
+  # re-use sample interface file for another plugin
+  swig_add_library(example2
+                   LANGUAGE python
+                   SOURCES ../example.i ../example.cxx)
+  set_target_properties (example2 PROPERTIES
+    OUTPUT_NAME example
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-2"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-2"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python2-2")
+  target_link_libraries(example2 PRIVATE Python2::Module)
+
+  add_test (NAME ModuleVersion2.example2
+    COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example2,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example2>"
+    "${Python2_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
+endif()
+
+if(CMake_TEST_FindPython3)
+  find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
+
+  swig_add_library(example3
+                   LANGUAGE python
+                   SOURCES ../example.i ../example.cxx)
+  set_target_properties (example3 PROPERTIES
+    OUTPUT_NAME example
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-1"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-1"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-1")
+  target_link_libraries(example3 PRIVATE Python3::Module)
+
+  add_test (NAME ModuleVersion2.example3
+    COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example3,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example3>"
+    "${Python3_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
+
+
+  # re-use sample interface file for another plugin
+  swig_add_library(example4
+                   LANGUAGE python
+                   SOURCES ../example.i ../example.cxx)
+  set_target_properties (example2 PROPERTIES
+    OUTPUT_NAME example
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-2"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-2"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/Python3-2")
+  target_link_libraries(example4 PRIVATE Python3::Module)
+
+  add_test (NAME ModuleVersion2.example4
+    COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example4,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example4>"
+    "${Python3_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
+endif()