kmod/configure-Detect-openssl-sm3-support.patch

From 90446ff0273775ee20762bb892fd3e901c8eb8ac Mon Sep 17 00:00:00 2001
From: Michal Suchanek <msuchanek@suse.de>
Date: Mon, 17 Jul 2023 21:23:51 +0200
Subject: [PATCH] configure: Detect openssl sm3 support

Older openssl versions do not support sm3. The code has an option to
disable the sm3 hash but the lack of openssl support is not detected
automatically.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 configure.ac |    7 +++++++
 1 file changed, 7 insertions(+)

Index: kmod-31/configure.ac
===================================================================
--- kmod-31.orig/configure.ac
+++ kmod-31/configure.ac
@@ -140,6 +140,13 @@ AS_IF([test "x$with_openssl" != "xno"],
 	PKG_CHECK_MODULES([libcrypto], [libcrypto >= 1.1.0], [LIBS="$LIBS $libcrypto_LIBS"])
 	AC_DEFINE([ENABLE_OPENSSL], [1], [Enable openssl for modinfo.])
 	module_signatures="PKCS7 $module_signatures"
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <openssl/ssl.h>
+		int nid = NID_sm3;]])], [
+		AC_MSG_NOTICE([openssl supports sm3])
+	], [
+		AC_MSG_NOTICE([openssl sm3 support not detected])
+		CPPFLAGS="$CPPFLAGS -DOPENSSL_NO_SM3"
+	])
 ], [
 	AC_MSG_NOTICE([openssl support not requested])
 ])