pass PYTHON_EXECUTABLE envs to thirdparty cinn (PaddlePaddle#50142)

Author: zhiqiu

cmake/external/cinn.cmake

@@ -40,7 +40,10 @@ set(CINN_OPTIONAL_ARGS
     -DWITH_MKL_CBLAS=${WITH_MKL}
     -DWITH_MKLDNN=${WITH_MKL}
     -DPUBLISH_LIBS=ON
-    -DWITH_TESTING=ON)
+    -DWITH_TESTING=ON
+    -DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}
+    -DPYTHON_INCLUDE_DIR=${PYTHON_INCLUDE_DIR}
+    -DPYTHON_LIBRARIES=${PYTHON_LIBRARIES})
 set(CINN_BUILD_COMMAND ${CMAKE_COMMAND} --build . --target cinnapi -j)
 set(CINN_BINARY_DIR ${CINN_PREFIX_DIR}/src/external_cinn-build)
 set(CINN_LIB_NAME "libcinnapi.so")