From c8b59416d0d71c35e96e2d04b09bd8841b239e57 Mon Sep 17 00:00:00 2001
From: Jacky Lee <39754370+jla524@users.noreply.github.com>
Date: Fri, 18 Oct 2024 10:50:52 -0700
Subject: [PATCH] fix: find_library can be None (#7145)

---
 autogen_stubs.sh                 | 2 +-
 tinygrad/runtime/autogen/libc.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/autogen_stubs.sh b/autogen_stubs.sh
index ab267c6ba0e4..ee9324e43643 100755
--- a/autogen_stubs.sh
+++ b/autogen_stubs.sh
@@ -211,7 +211,7 @@ generate_libc() {
 
   sed -i "s\import ctypes\import ctypes, ctypes.util, os\g" $BASE/libc.py
   sed -i "s\FIXME_STUB\libc\g" $BASE/libc.py
-  sed -i "s\FunctionFactoryStub()\ctypes.CDLL(ctypes.util.find_library('c'))\g" $BASE/libc.py
+  sed -i "s\FunctionFactoryStub()\None if (libc_path := ctypes.util.find_library('c')) is None else ctypes.CDLL(libc_path)\g" $BASE/libc.py
 
   fixup $BASE/libc.py
 }
diff --git a/tinygrad/runtime/autogen/libc.py b/tinygrad/runtime/autogen/libc.py
index d0f8ac121d80..53e1841ed63a 100644
--- a/tinygrad/runtime/autogen/libc.py
+++ b/tinygrad/runtime/autogen/libc.py
@@ -27,7 +27,7 @@ def __getattr__(self, _):
 # You can either re-run clan2py with -l /path/to/library.so
 # Or manually fix this by comment the ctypes.CDLL loading
 _libraries = {}
-_libraries['libc'] = ctypes.CDLL(ctypes.util.find_library('c')) #  ctypes.CDLL('libc')
+_libraries['libc'] = None if (libc_path := ctypes.util.find_library('c')) is None else ctypes.CDLL(libc_path) #  ctypes.CDLL('libc')
 def string_cast(char_pointer, encoding='utf-8', errors='strict'):
     value = ctypes.cast(char_pointer, ctypes.c_char_p).value
     if value is not None and encoding is not None: