From f649e9a291e8ba2a1a1ec6ccc800846325fbcc8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C3=A9n=C3=A9dikt=20Tran?=
 <10796600+picnixz@users.noreply.github.com>
Date: Mon, 28 Apr 2025 01:02:00 +0200
Subject: [PATCH] disable HACL* HMAC on Emscripten

---
 configure    | 2 +-
 configure.ac | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 8b91d1d871a971..1459289ecf0f85 100755
--- a/configure
+++ b/configure
@@ -32394,7 +32394,7 @@ printf %s "checking for stdlib extension module _hmac... " >&6; }
         if test "$py_cv_module__hmac" != "n/a"
 then :
 
-    if true
+    if test "$ac_sys_system" != "Emscripten"
 then :
   if true
 then :
diff --git a/configure.ac b/configure.ac
index 1aedd54bd0c70d..31d9d9fc7e6891 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7990,7 +7990,10 @@ PY_HACL_CREATE_MODULE([BLAKE2], [_blake2], [test "$with_builtin_blake2" = yes])
 dnl HMAC builtin library does not need OpenSSL for now. In the future
 dnl we might want to rely on OpenSSL EVP/NID interface or implement
 dnl our own for algorithm resolution.
-PY_HACL_CREATE_MODULE([HMAC], [_hmac], [])
+dnl
+dnl For Emscripten, we disable HACL* HMAC as it is tricky to make it work.
+dnl See https://github.com/python/cpython/issues/133042.
+PY_HACL_CREATE_MODULE([HMAC], [_hmac], [test "$ac_sys_system" != "Emscripten"])
 ### end(cryptographic primitives)
 
 PY_STDLIB_MOD([_ctypes],