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From 9ba77300f9f5dea9f53aed00bf6c33d10b7b2fce Mon Sep 17 00:00:00 2001
From: Sean Parkinson <sean@wolfssl.com>
Date: Thu, 7 Jul 2022 09:30:48 +1000
Subject: [PATCH] AESNI: fix configure to use minimal compiler flags
diff --git a/configure.ac b/configure.ac
index df97ac75c..6abb0c744 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2142,21 +2142,19 @@ then
if test "$ENABLED_AESNI" = "yes" || test "$ENABLED_INTELASM" = "yes"
then
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_AESNI"
- if test "$GCC" = "yes"
+ if test "$CC" != "icc"
then
- # clang needs these flags
- if test "$CC" = "clang"
- then
- AM_CFLAGS="$AM_CFLAGS -maes -mpclmul"
- else
- # GCC needs these flags, icc doesn't
- # opt levels greater than 2 may cause problems on systems w/o
- # aesni
- if test "$CC" != "icc"
- then
- AM_CFLAGS="$AM_CFLAGS -maes -msse4 -mpclmul"
- fi
- fi
+ case $host_os in
+ mingw*)
+ # Windows uses intrinsics for GCM which uses SSE4 instructions.
+ # MSVC has own build files.
+ AM_CFLAGS="$AM_CFLAGS -maes -msse4 -mpclmul"
+ ;;
+ *)
+ # Intrinsics used in AES_set_decrypt_key (TODO: rework)
+ AM_CFLAGS="$AM_CFLAGS -maes"
+ ;;
+ esac
fi
AS_IF([test "x$ENABLED_AESGCM" != "xno"],[AM_CCASFLAGS="$AM_CCASFLAGS -DHAVE_AESGCM"])
fi
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