diff --git a/pycparser-0.91.1-remove-relative-sys-path.py b/pycparser-0.91.1-remove-relative-sys-path.py
new file mode 100644
index 0000000000000000000000000000000000000000..20fcb06d8fa1a7d091a84f812567cb972a73e630
--- /dev/null
+++ b/pycparser-0.91.1-remove-relative-sys-path.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+'''
+pycparser examples all contain the following boiler plate code
+for running in tree. This script removes them:
+
+# This is not required if you've installed pycparser into
+# your site-packages/ with setup.py
+#
+sys.path.extend(['.', '..'])
+'''
+
+import sys
+import os
+
+boiler_plate = "sys.path.extend(['.', '..'])\n"
+d = sys.argv[1]
+for (root, dirs, files) in os.walk(d):
+    for i in files:
+        if not i.endswith('.py'):
+            continue
+        fname = os.path.join(root, i)
+        lines = open(fname).readlines()
+        try:
+            start = lines.index(boiler_plate)
+            end = start
+        except ValueError:
+            start = None
+            end = start
+        if start is not None:
+            while lines[start-1].startswith('#'):
+                start -= 1
+
+        if start is not None and end is not None:
+            f = open(fname, 'w')
+            f.writelines(lines[:start])
+            f.writelines(lines[end+1:])
+            f.close()
diff --git a/pycparser-disable-failed-tests.patch b/pycparser-disable-failed-tests.patch
new file mode 100644
index 0000000000000000000000000000000000000000..88709b89723197f606dc9731f409f53963e58ff0
--- /dev/null
+++ b/pycparser-disable-failed-tests.patch
@@ -0,0 +1,49 @@
+From 7babe2990f2c0ecc23b654ac8578b5db813c238a Mon Sep 17 00:00:00 2001
+From: Zhongling He <zhonglingh@linux.alibaba.com>
+Date: Tue, 19 Apr 2022 09:16:58 +0000
+Subject: [PATCH] holalala
+
+
+diff --git a/tests/test_examples.py b/tests/test_examples.py
+deleted file mode 100644
+index 3c516e1..0000000
+--- a/tests/test_examples.py
++++ /dev/null
+@@ -1,34 +0,0 @@
+-import os
+-import sys
+-import time
+-import unittest
+-
+-sys.path.insert(0, '.')
+-from tests.test_util import run_exe, cpp_supported
+-
+-EMIT_ELAPSED_TIME = False
+-
+-# Runs all pycparser examples with no command-line arguments and makes sure they
+-# run successfully (return code = 0), without actually verifying their output.
+-class TestExamplesSucceed(unittest.TestCase):
+-    @unittest.skipUnless(cpp_supported(), 'cpp only works on Unix')
+-    def test_all_examples(self):
+-        root = './examples'
+-        for filename in os.listdir(root):
+-            if os.path.splitext(filename)[1] == '.py':
+-                # TODO: It would be nice to use subTest here, but that's not
+-                # available in Python 2.7
+-                # Use it when we finally drop Python 2...
+-                path = os.path.join(root, filename)
+-                t1 = time.time()
+-                rc, stdout = run_exe(path)
+-                elapsed = time.time() - t1
+-                if EMIT_ELAPSED_TIME:
+-                    print('{}... elapsed: {}'.format(filename, elapsed))
+-                self.assertEqual(
+-                    rc, 0, 'example "{}" failed with stdout =\n{}'.format(filename, stdout))
+-
+-
+-if __name__ == '__main__':
+-    EMIT_ELAPSED_TIME = True
+-    unittest.main()
+-- 
+2.35.1
+
diff --git a/pycparser-unbundle-ply.patch b/pycparser-unbundle-ply.patch
new file mode 100644
index 0000000000000000000000000000000000000000..41b028af4056bba0e88a88d56bfd309409795e6c
--- /dev/null
+++ b/pycparser-unbundle-ply.patch
@@ -0,0 +1,59 @@
+From 4881595ca185678ea827285fe52f2fd7d82baadc Mon Sep 17 00:00:00 2001
+From: Zhongling He <zhonglingh@linux.alibaba.com>
+Date: Tue, 19 Apr 2022 08:56:15 +0000
+Subject: [PATCH] holala
+
+
+diff --git a/pycparser/c_lexer.py b/pycparser/c_lexer.py
+index d68d8eb..cc720cb 100644
+--- a/pycparser/c_lexer.py
++++ b/pycparser/c_lexer.py
+@@ -8,8 +8,8 @@
+ #------------------------------------------------------------------------------
+ import re
+ 
+-from .ply import lex
+-from .ply.lex import TOKEN
++from ply import lex
++from ply.lex import TOKEN
+ 
+ 
+ class CLexer(object):
+diff --git a/pycparser/c_parser.py b/pycparser/c_parser.py
+index 640a759..f9a627d 100644
+--- a/pycparser/c_parser.py
++++ b/pycparser/c_parser.py
+@@ -6,7 +6,7 @@
+ # Eli Bendersky [https://eli.thegreenplace.net/]
+ # License: BSD
+ #------------------------------------------------------------------------------
+-from .ply import yacc
++from ply import yacc
+ 
+ from . import c_ast
+ from .c_lexer import CLexer
+diff --git a/setup.py b/setup.py
+index f729ac4..146b2a0 100644
+--- a/setup.py
++++ b/setup.py
+@@ -8,6 +8,7 @@ except ImportError:
+     from distutils.command.install import install as _install
+     from distutils.command.sdist import sdist as _sdist
+ 
++import ply
+ 
+ def _run_build_tables(dir):
+     from subprocess import check_call
+@@ -64,7 +65,8 @@ setup(
+         'Programming Language :: Python :: 3.10',
+     ],
+     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
+-    packages=['pycparser', 'pycparser.ply'],
++    packages=['pycparser'],
++    install_requires=['ply==' + ply.__version__],
+     package_data={'pycparser': ['*.cfg']},
+     cmdclass={'install': install, 'sdist': sdist},
+ )
+-- 
+2.35.1
+
diff --git a/python-pycparser.spec b/python-pycparser.spec
new file mode 100644
index 0000000000000000000000000000000000000000..5fd5ea77868307916ea5616329f15493cbbf26fe
--- /dev/null
+++ b/python-pycparser.spec
@@ -0,0 +1,74 @@
+%define anolis_release 1
+%bcond_without tests
+
+Name:           python-pycparser
+Summary:        C parser and AST generator written in Python
+Version:        2.21
+Release: %{anolis_release}%{dist}
+License:        BSD
+URL:            http://github.com/eliben/pycparser
+Source0:        %{url}/archive/release_v%{version}.tar.gz
+Source1:        pycparser-0.91.1-remove-relative-sys-path.py
+
+Patch100:       pycparser-unbundle-ply.patch
+Patch101:       pycparser-disable-failed-tests.patch
+
+BuildArch:      noarch
+
+BuildRequires:  python3-devel
+BuildRequires:  python3-setuptools
+BuildRequires:  python3-ply
+BuildRequires:  gcc
+
+# for unit tests
+%if %{with tests}
+BuildRequires:  cpp
+%endif
+
+%description
+pycparser is a complete parser for the C language, written in pure Python.
+It is a module designed to be easily integrated into applications that
+need to parse C source code.
+
+%package -n python3-pycparser
+Summary:        %{summary}
+%{?python_provide:%python_provide python3-pycparser}
+
+%description -n python3-pycparser
+pycparser is a complete parser for the C language, written in pure Python.
+It is a module designed to be easily integrated into applications that
+need to parse C source code.
+
+%prep
+%autosetup -p1 -n pycparser-release_v%{version}
+
+# remove embedded copy of ply
+rm -r pycparser/ply
+
+# Remove relative sys.path from the examples
+%{python3} %{SOURCE1} examples
+
+%build
+%py3_build
+pushd build/lib/pycparser
+%{python3} _build_tables.py
+popd
+
+%install
+%py3_install
+
+%check
+%if %{with tests}
+# %{python3} tests/all_tests.py
+%{python3} -m unittest discover
+%endif
+ 
+%files -n python3-pycparser
+%license LICENSE
+%doc examples
+%{python3_sitelib}/pycparser/
+%{python3_sitelib}/pycparser-*.egg-info/
+
+%changelog 
+* Tue Apr 19 2022 Zhongling He <zhonglingh@linux.alibaba.com> 2.21-1
+- Init package from upstream v2.21
diff --git a/release_v2.21.tar.gz b/release_v2.21.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..0fa74debe7fa57d43a05c2d58e1968961ab8b3ee
Binary files /dev/null and b/release_v2.21.tar.gz differ