Only in b: '#setup.py#'
diff '--color=auto' -u a/setup.py b/setup.py
--- a/setup.py	2026-10-02 20:45:52.000000000 -0000
+++ b/setup.py	2026-11-05 18:14:29.913404558 -0000
@@ -63,24 +63,14 @@
 pyroaring_module = Extension(
     'pyroaring',
     sources=[os.path.join(PKG_DIR, 'pyroaring.pyx')],
-    extra_compile_args=ext_compile_args,
     language='c++',
+    libraries=['roaring'],
 )
 
-# roaring.c is compiled as a separate static library because it must be compiled
-# as C (not C++), with a C11 standard flag.
-libraries = [(
-    'croaring',
-    {
-        'sources': [os.path.join(PKG_DIR, 'roaring.c')],
-        'cflags': c_compile_args,
-    },
-)]
-
 setup(
     name='pyroaring',
     ext_modules=[pyroaring_module],
-    libraries=libraries,
+    libraries=None,
     package_data={'pyroaring': ['py.typed', '__init__.pyi']},
     packages=['pyroaring'],
     version=VERSION,