diff --git a/arrow/xlntpyarrow/CMakeLists.txt b/arrow/xlntpyarrow/CMakeLists.txt
index efaddd41..06ad8568 100644
--- a/arrow/xlntpyarrow/CMakeLists.txt
+++ b/arrow/xlntpyarrow/CMakeLists.txt
@@ -8,5 +8,6 @@ endif()
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/setup.py.cmake"
     "${CMAKE_CURRENT_BINARY_DIR}/setup.py")
 
-add_custom_target(xlntpyarrow
-    COMMAND python setup.py build)
+add_custom_target(xlntpyarrow ALL
+    COMMAND python setup.py build
+    DEPENDS xlntarrow)
diff --git a/arrow/xlntpyarrow/setup.py.cmake b/arrow/xlntpyarrow/setup.py.cmake
index 811ede7f..aba74c6c 100644
--- a/arrow/xlntpyarrow/setup.py.cmake
+++ b/arrow/xlntpyarrow/setup.py.cmake
@@ -32,7 +32,7 @@ library_dirs = [
     os.path.join(conda_root, '../lib')
 ]
 
-compile_args = '${CMAKE_CXX_FLAGS}'.split() or []
+compile_args = '${CMAKE_CXX_FLAGS}'.split()
 
 xlntpyarrow_extension = Extension(
     'xlntpyarrow',