Fixed

Signed-off-by: Adam Li <adam2392@gmail.com>

Author: adam2392

meson.build

@@ -44,6 +44,8 @@ endif
 
 tempita = files('sklearn/_build_utils/tempita.py')
 
+option('enable_custom_target', type: 'boolean', value: true, description: 'Enable custom target')
+
 py = import('python').find_installation(pure: false)
 
 # Copy all the .py files to the install dir, rather than using

sklearn/meson.build

@@ -193,14 +193,16 @@ cython_args += scikit_learn_cython_args
 # Write file in Meson build dir to be able to figure out from Python code
 # whether scikit-learn was built with Meson. Adapted from pandas
 # _version_meson.py.
-custom_target('write_built_with_meson_file',
-    output: '_built_with_meson.py',
-    command: [
-        py, '-c', 'with open("sklearn/_built_with_meson.py", "w") as f: f.write("")'
-    ],
-    install: true,
-    install_dir: py.get_install_dir() / 'sklearn'
-)
+if get_option('enable_custom_target')
+  custom_target('write_built_with_meson_file',
+      output: '_built_with_meson.py',
+      command: [
+          py, '-c', 'with open("sklearn/_built_with_meson.py", "w") as f: f.write("")'
+      ],
+      install: true,
+      install_dir: py.get_install_dir() / 'sklearn'
+  )
+endif
 
 extensions = ['_isotonic']