From f823910bbd4bf01ec3e1ab7b3cb1d77815138296 Mon Sep 17 00:00:00 2001
From: velemas <10437413+velemas@users.noreply.github.com>
Date: Thu, 12 Dec 2024 20:07:55 +0200
Subject: [PATCH] gh-127865: Fix build failure for systems without thread local
 support (GH-127866)

This PR fixes the build issue introduced by the commit 628f6eb from
GH-112207 on systems without thread local support.
---
 .../Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst  | 1 +
 Python/import.c                                           | 8 ++++----
 2 files changed, 5 insertions(+), 4 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst

diff --git a/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst b/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst
new file mode 100644
index 00000000000000..3fc1d8a1b51d30
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst
@@ -0,0 +1 @@
+Fix build failure on systems without thread-locals support.
diff --git a/Python/import.c b/Python/import.c
index b3c384c27718ce..f3511aaf7b8010 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -749,7 +749,7 @@ const char *
 _PyImport_ResolveNameWithPackageContext(const char *name)
 {
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+    PyMutex_Lock(&EXTENSIONS.mutex);
 #endif
     if (PKGCONTEXT != NULL) {
         const char *p = strrchr(PKGCONTEXT, '.');
@@ -759,7 +759,7 @@ _PyImport_ResolveNameWithPackageContext(const char *name)
         }
     }
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_release_lock(EXTENSIONS.mutex);
+    PyMutex_Unlock(&EXTENSIONS.mutex);
 #endif
     return name;
 }
@@ -768,12 +768,12 @@ const char *
 _PyImport_SwapPackageContext(const char *newcontext)
 {
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+    PyMutex_Lock(&EXTENSIONS.mutex);
 #endif
     const char *oldcontext = PKGCONTEXT;
     PKGCONTEXT = newcontext;
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_release_lock(EXTENSIONS.mutex);
+    PyMutex_Unlock(&EXTENSIONS.mutex);
 #endif
     return oldcontext;
 }