FindPython3 only defines Python3_EXECUTABLE

CMakeLists.txt

@@ -38,10 +38,10 @@ else()
    string(REPLACE "/bin/python3.8" "" EXTRA_PYTHON_PATH "${CK_USE_ALTERNATIVE_PYTHON}")
    message("alternative python path is: ${EXTRA_PYTHON_PATH}")
    add_definitions(-DPython3_EXECUTABLE="${CK_USE_ALTERNATIVE_PYTHON}")
+   find_package(Python3 3.8 COMPONENTS Interpreter REQUIRED PATH ${CK_USE_ALTERNATIVE_PYTHON})
    set(Python3_EXECUTABLE "${CK_USE_ALTERNATIVE_PYTHON}")
    set(PYTHON_EXECUTABLE "${CK_USE_ALTERNATIVE_PYTHON}")
    set(ENV{LD_LIBRARY_PATH} "${EXTRA_PYTHON_PATH}/lib:$ENV{LD_LIBRARY_PATH}")
-   find_package(Python3 3.8 COMPONENTS Interpreter REQUIRED)
 endif()
 
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")

library/src/tensor_operation_instance/gpu/mha/CMakeLists.txt

@@ -29,7 +29,7 @@ file(COPY ${MHA_HEADERS} DESTINATION ${FMHA_CPP_FOLDER})
 
 # generate a list of kernels, but not actually emit files at config stage
 execute_process(
-  COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/example/ck_tile/01_fmha/generate.py
+  COMMAND ${Python3_EXECUTABLE} ${CMAKE_SOURCE_DIR}/example/ck_tile/01_fmha/generate.py
   --list_blobs ${FMHA_CPP_FOLDER}/blob_list.txt
   RESULT_VARIABLE ret
 )
@@ -42,7 +42,7 @@ endif()
 # actually generate the cpp files
 add_custom_command(
   OUTPUT ${FMHA_FWD_GEN_BLOBS}
-  COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/example/ck_tile/01_fmha/generate.py
+  COMMAND ${Python3_EXECUTABLE} ${CMAKE_SOURCE_DIR}/example/ck_tile/01_fmha/generate.py
   --output_dir ${FMHA_CPP_FOLDER}
   COMMENT "Generating mha kernel (cpp) files now ..."
   VERBATIM