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linedance-app/venv/lib/python3.12/site-packages/sklearn/meson.build

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+fs = import('fs')
+
+# Platform detection
+is_windows = host_machine.system() == 'windows'
+is_mingw = is_windows and cc.get_id() == 'gcc'
+
+# Adapted from Scipy. mingw is untested and not officially supported. If you
+# ever bump into issues when trying to compile for mingw, please open an issue
+# in the scikit-learn issue tracker
+if is_mingw
+  # For mingw-w64, link statically against the UCRT.
+  gcc_link_args = ['-lucrt', '-static']
+  add_project_link_arguments(gcc_link_args, language: ['c', 'cpp'])
+  # Force gcc to float64 long doubles for compatibility with MSVC
+  # builds, for C only.
+  add_project_arguments('-mlong-double-64', language: 'c')
+endif
+
+# Only check build dependencies version when not cross-compiling, as running
+# Python interpreter can be tricky in cross-compilation settings. For more
+# details, see https://docs.scipy.org/doc/scipy/building/cross_compilation.html
+if not meson.is_cross_build()
+  if not py.version().version_compare('>=3.11')
+    error('scikit-learn requires Python>=3.11, got ' + py.version() + ' instead')
+  endif
+
+  cython_min_version = run_command(py, ['_min_dependencies.py', 'cython'], check: true).stdout().strip()
+  if not cython.version().version_compare('>=' + cython_min_version)
+    error('scikit-learn requires Cython>=' + cython_min_version + ', got ' + cython.version() + ' instead')
+  endif
+
+  numpy_version = run_command(py,
+    ['-c', 'import numpy; print(numpy.__version__)'], check: true).stdout().strip()
+  numpy_min_version = run_command(py, ['_min_dependencies.py', 'numpy'], check: true).stdout().strip()
+  if not numpy_version.version_compare('>=' + numpy_min_version)
+    error('scikit-learn requires numpy>=' + numpy_min_version + ', got ' + numpy_version + ' instead')
+  endif
+
+  scipy_version = run_command(py,
+    ['-c', 'import scipy; print(scipy.__version__)'], check: true).stdout().strip()
+  scipy_min_version = run_command(py, ['_min_dependencies.py', 'scipy'], check: true).stdout().strip()
+  if not scipy_version.version_compare('>=' + scipy_min_version)
+    error('scikit-learn requires scipy>=' + scipy_min_version + ', got ' + scipy_version + ' instead')
+  endif
+
+  # meson-python is required only when going through pip. Using meson directly
+  # should not check meson-python version.
+  meson_python_version_command_result = run_command(py,
+    ['-c', 'import importlib.metadata; print(importlib.metadata.version("meson-python"))'], check: false)
+  meson_python_installed = meson_python_version_command_result.returncode() == 0
+  if meson_python_installed
+    meson_python_version = meson_python_version_command_result.stdout().strip()
+    meson_python_min_version = run_command(py, ['_min_dependencies.py', 'meson-python'], check: true).stdout().strip()
+    if not meson_python_version.version_compare('>=' + meson_python_min_version)
+      error('scikit-learn requires meson-python>=' + meson_python_min_version + ', got ' + meson_python_version + ' instead')
+    endif
+  endif
+
+endif
+
+# Adapted from scipy, each project seems to have its own tweaks for this. One
+# day using dependency('numpy') will be a thing, see
+# https://github.com/mesonbuild/meson/issues/9598.
+# NumPy include directory - needed in all submodules
+# Relative paths are needed when for example a virtualenv is
+# placed inside the source tree; Meson rejects absolute paths to places inside
+# the source tree. The try-except is needed because when things are split
+# across drives on Windows, there is no relative path and an exception gets
+# raised. There may be other such cases, so add a catch-all and switch to
+# an absolute path.
+# For cross-compilation it is often not possible to run the Python interpreter
+# in order to retrieve numpy's include directory. It can be specified in the
+# cross file instead:
+#   [properties]
+#   numpy-include-dir = /abspath/to/host-pythons/site-packages/numpy/core/include
+#
+# This uses the path as is, and avoids running the interpreter.
+incdir_numpy = meson.get_external_property('numpy-include-dir', 'not-given')
+if incdir_numpy == 'not-given'
+  incdir_numpy = run_command(py,
+    [
+      '-c',
+      '''
+import os
+import numpy as np
+try:
+  incdir = os.path.relpath(np.get_include())
+except Exception:
+  incdir = np.get_include()
+print(incdir)
+'''
+    ],
+    check: true
+  ).stdout().strip()
+endif
+
+inc_np = include_directories(incdir_numpy)
+# Don't use the deprecated NumPy C API. Define this to a fixed version instead of
+# NPY_API_VERSION in order not to break compilation for released SciPy versions
+# when NumPy introduces a new deprecation.
+numpy_no_deprecated_api = ['-DNPY_NO_DEPRECATED_API=NPY_1_22_API_VERSION']
+np_dep = declare_dependency(include_directories: inc_np, compile_args: numpy_no_deprecated_api)
+
+openmp_dep = dependency('OpenMP', language: 'c', required: false)
+
+if not openmp_dep.found()
+  warn_about_missing_openmp = true
+  # On Apple Clang avoid a misleading warning if compiler variables are set.
+  # See https://github.com/scikit-learn/scikit-learn/issues/28710 for more
+  # details. This may be removed if the OpenMP detection on Apple Clang improves,
+  # see https://github.com/mesonbuild/meson/issues/7435#issuecomment-2047585466.
+  if host_machine.system() == 'darwin' and cc.get_id() == 'clang'
+    compiler_env_vars_with_openmp = run_command(py,
+      [
+        '-c',
+        '''
+import os
+
+compiler_env_vars_to_check = ["CPPFLAGS", "CFLAGS", "CXXFLAGS"]
+
+compiler_env_vars_with_openmp = [
+    var for var in compiler_env_vars_to_check if "-fopenmp" in os.getenv(var, "")]
+print(compiler_env_vars_with_openmp)
+'''], check: true).stdout().strip()
+      warn_about_missing_openmp = compiler_env_vars_with_openmp == '[]'
+  endif
+  if warn_about_missing_openmp
+    warning(
+'''
+                ***********
+                * WARNING *
+                ***********
+
+It seems that scikit-learn cannot be built with OpenMP.
+
+- Make sure you have followed the installation instructions:
+
+    https://scikit-learn.org/dev/developers/advanced_installation.html
+
+- If your compiler supports OpenMP but you still see this
+  message, please submit a bug report at:
+
+    https://github.com/scikit-learn/scikit-learn/issues
+
+- The build will continue with OpenMP-based parallelism
+  disabled. Note however that some estimators will run in
+  sequential mode instead of leveraging thread-based
+  parallelism.
+
+                    ***
+''')
+  else
+    warning(
+'''It looks like compiler environment variables were set to enable OpenMP support.
+Check the output of "import sklearn; sklearn.show_versions()" after the build
+to make sure that scikit-learn was actually built with OpenMP support.
+''')
+  endif
+endif
+
+# For now, we keep supporting SKLEARN_ENABLE_DEBUG_CYTHON_DIRECTIVES variable
+# (see how it is done in sklearn/_build_utils/__init__.py when building with
+# setuptools). Accessing environment variables in meson.build is discouraged,
+# so once we drop setuptools this functionality should be behind a meson option
+# or buildtype
+boundscheck = run_command(py,
+    [
+      '-c',
+      '''
+import os
+
+if os.environ.get("SKLEARN_ENABLE_DEBUG_CYTHON_DIRECTIVES", "0") != "0":
+    print(True)
+else:
+    print(False)
+      '''
+    ],
+    check: true
+    ).stdout().strip()
+
+cython_args = []
+cython_program = find_program(cython.cmd_array()[0])
+
+scikit_learn_cython_args = [
+  '--depfile',
+  '-X language_level=3', '-X boundscheck=' + boundscheck, '-X wraparound=False',
+  '-X initializedcheck=False', '-X nonecheck=False', '-X cdivision=True',
+  '-X profile=False',
+  # Needed for cython imports across subpackages, e.g. cluster pyx that
+  # cimports metrics pxd
+  '--include-dir', meson.global_build_root(),
+]
+cython_args += scikit_learn_cython_args
+
+if cython.version().version_compare('>=3.1.0')
+  cython_args += ['-Xfreethreading_compatible=True']
+  cython_shared_src = custom_target(
+    install: false,
+    output: '_cyutility.c',
+    command: [
+      cython_program, '-3', '--fast-fail', '-Xfreethreading_compatible=True',
+      '--generate-shared=' + meson.current_build_dir()/'_cyutility.c'
+    ],
+  )
+
+  py.extension_module('_cyutility',
+    cython_shared_src,
+    subdir: 'sklearn',
+    cython_args: cython_args,
+    install: true,
+  )
+
+  cython_args += ['--shared=sklearn._cyutility']
+endif
+
+cython_gen = generator(cython_program,
+  arguments : cython_args + ['@INPUT@', '--output-file', '@OUTPUT@'],
+  output : '@BASENAME@.c',
+  depfile: '@BASENAME@.c.dep',
+)
+
+cython_gen_cpp = generator(cython_program,
+  arguments : cython_args + ['--cplus', '@INPUT@', '--output-file', '@OUTPUT@'],
+  output : '@BASENAME@.cpp',
+  depfile: '@BASENAME@.cpp.dep'
+)
+
+extensions = ['_isotonic']
+
+py.extension_module(
+  '_isotonic',
+  cython_gen.process('_isotonic.pyx'),
+  cython_args: cython_args,
+  install: true,
+  subdir: 'sklearn',
+)
+
+# Need for Cython cimports across subpackages to work, i.e. avoid errors like
+# relative cimport from non-package directory is not allowed
+sklearn_root_cython_tree = [
+  fs.copyfile('__init__.py')
+]
+
+sklearn_dir = py.get_install_dir() / 'sklearn'
+
+# Subpackages are mostly in alphabetical order except to handle Cython
+# dependencies across subpackages
+subdir('__check_build')
+subdir('_loss')
+# utils needs to be early since plenty of other modules cimports utils .pxd
+subdir('utils')
+# metrics needs to be to be before cluster since cluster cimports metrics .pxd
+subdir('metrics')
+subdir('cluster')
+subdir('datasets')
+subdir('decomposition')
+subdir('ensemble')
+subdir('feature_extraction')
+subdir('linear_model')
+subdir('manifold')
+subdir('neighbors')
+subdir('preprocessing')
+subdir('svm')
+subdir('tree')