package/libs/wolfssl/patches/300-AESNI-fix-configure-to-use-minimal-compiler-flags.patch

   1 From 9ba77300f9f5dea9f53aed00bf6c33d10b7b2fce Mon Sep 17 00:00:00 2001
   2 From: Sean Parkinson <sean@wolfssl.com>
   3 Date: Thu, 7 Jul 2022 09:30:48 +1000
   4 Subject: [PATCH] AESNI: fix configure to use minimal compiler flags
   5
   6
   7 diff --git a/configure.ac b/configure.ac
   8 index df97ac75c..6abb0c744 100644
   9 --- a/configure.ac
  10 +++ b/configure.ac
  11 @@ -2142,21 +2142,19 @@ then
  12      if test "$ENABLED_AESNI" = "yes" || test "$ENABLED_INTELASM" = "yes"
  13      then
  14          AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_AESNI"
  15 -        if test "$GCC" = "yes"
  16 +        if test "$CC" != "icc"
  17          then
  18 -            # clang needs these flags
  19 -            if test "$CC" = "clang"
  20 -            then
  21 -                AM_CFLAGS="$AM_CFLAGS -maes -mpclmul"
  22 -            else
  23 -                # GCC needs these flags, icc doesn't
  24 -                # opt levels greater than 2 may cause problems on systems w/o
  25 -                # aesni
  26 -                if test "$CC" != "icc"
  27 -                then
  28 -                    AM_CFLAGS="$AM_CFLAGS -maes -msse4 -mpclmul"
  29 -                fi
  30 -            fi
  31 +            case $host_os in
  32 +            mingw*)
  33 +                # Windows uses intrinsics for GCM which uses SSE4 instructions.
  34 +                # MSVC has own build files.
  35 +                AM_CFLAGS="$AM_CFLAGS -maes -msse4 -mpclmul"
  36 +                ;;
  37 +            *)
  38 +                # Intrinsics used in AES_set_decrypt_key (TODO: rework)
  39 +                AM_CFLAGS="$AM_CFLAGS -maes"
  40 +                ;;
  41 +            esac
  42          fi
  43          AS_IF([test "x$ENABLED_AESGCM" != "xno"],[AM_CCASFLAGS="$AM_CCASFLAGS -DHAVE_AESGCM"])
  44      fi