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-rw-r--r--Modules/_multiprocessing/posixshmem.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/Modules/_multiprocessing/posixshmem.c b/Modules/_multiprocessing/posixshmem.c
index debef32..f4da9f7 100644
--- a/Modules/_multiprocessing/posixshmem.c
+++ b/Modules/_multiprocessing/posixshmem.c
@@ -2,6 +2,11 @@
posixshmem - A Python extension that provides shm_open() and shm_unlink()
*/
+// clinic/posixshmem.c.h uses internal pycore_modsupport.h API
+#ifndef Py_BUILD_CORE_BUILTIN
+# define Py_BUILD_CORE_MODULE 1
+#endif
+
#include <Python.h>
// for shm_open() and shm_unlink()