+++ /dev/null
-diff --git a/configure.ac b/configure.ac
-index 9e2de27c..6b17c020 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -44,6 +44,10 @@ AS_IF([pwd | fgrep ' ' > /dev/null 2>&1],
- [AC_MSG_ERROR([The build directory contains whitespaces - This can cause tests/installation to fail due to limitations of some libtool versions])]
- )
-
-+AC_PROG_CC_C99
-+AM_PROG_AS
-+AC_USE_SYSTEM_EXTENSIONS
-+
- dnl Switches
-
- AC_ARG_ENABLE(ssp,
-@@ -210,17 +214,11 @@ AX_VALGRIND_CHECK
-
- dnl Checks
-
--AC_PROG_CC_C99
--AM_PROG_AS
--AC_USE_SYSTEM_EXTENSIONS
- AC_C_VARARRAYS
-
- AC_CHECK_DEFINE([__wasi__], [WASI="yes"], [])
-
--AC_CHECK_DEFINE([_FORTIFY_SOURCE], [], [
-- AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2],
-- [CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"])
--])
-+AS_CASE([$host_os], [linux-gnu], [AX_ADD_FORTIFY_SOURCE], [ ])
-
- AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
- [CFLAGS="$CFLAGS -fvisibility=hidden"])
-@@ -343,9 +341,11 @@ AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wswitch-enum], [CWFLAGS="$CWFLAGS -Wswitch-enum
- AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wvariable-decl], [CWFLAGS="$CWFLAGS -Wvariable-decl"])
- AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wwrite-strings], [CWFLAGS="$CWFLAGS -Wwrite-strings"])
-
--AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
--AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
--AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"])
-+AS_IF([test "x$EMSCRIPTEN" = "x"], [
-+ AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
-+ AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
-+ AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"])
-+])
-
- AX_CHECK_CATCHABLE_SEGV
- AX_CHECK_CATCHABLE_ABRT
-@@ -362,10 +362,51 @@ AC_SUBST(LIBTOOL_DEPS)
- AC_ARG_VAR([AR], [path to the ar utility])
- AC_CHECK_TOOL([AR], [ar], [ar])
-
--dnl Checks for headers
-+dnl Checks for headers and codegen feature flags
-+
-+target_cpu_aarch64=no
-+AC_MSG_CHECKING(for ARM64 target)
-+AC_COMPILE_IFELSE(
-+ [AC_LANG_PROGRAM([
-+#ifndef __aarch64__
-+#error Not aarch64
-+#endif
-+#include <arm_neon.h>
-+ ], [(void) 0])],
-+ [AC_MSG_RESULT(yes)
-+ target_cpu_aarch64=yes],
-+ [AC_MSG_RESULT(no)
-+ target_cpu_aarch64=no])
-
- AS_IF([test "x$EMSCRIPTEN" = "x"], [
-
-+ AS_IF([test "x$target_cpu_aarch64" = "xyes"], [
-+ have_armcrypto=no
-+ AC_MSG_CHECKING(for ARM crypto instructions set)
-+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]], [[ vaeseq_u8(vmovq_n_u8(0), vmovq_n_u8(__ARM_FEATURE_CRYPTO)) ]])],
-+ [
-+ AC_MSG_RESULT(yes)
-+ have_armcrypto=yes
-+ ],
-+ [
-+ AC_MSG_RESULT(no)
-+ oldcflags="$CFLAGS"
-+ AX_CHECK_COMPILE_FLAG([-march=armv8-a+crypto], [
-+ CFLAGS="$CFLAGS -march=armv8-a+crypto"
-+ AC_MSG_CHECKING(for ARM crypto instructions set with -march=armv8-a+crypto)
-+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]], [[ vaeseq_u8(vmovq_n_u8(0), vmovq_n_u8(__ARM_FEATURE_CRYPTO)) ]])],
-+ [
-+ AC_MSG_RESULT(yes)
-+ have_armcrypto=yes
-+ CFLAGS_ARMCRYPTO="-march=armv8-a+crypto"
-+ ],
-+ [AC_MSG_RESULT(no)])
-+ CFLAGS="$oldcflags"
-+ ])
-+ ])
-+ AS_IF([test "$have_armcrypto" = "yes"],[AC_DEFINE([HAVE_ARMCRYPTO], [1], [ARM crypto extensions are available])])
-+ ])
-+
- oldcflags="$CFLAGS"
- AX_CHECK_COMPILE_FLAG([-mmmx], [CFLAGS="$CFLAGS -mmmx"])
- AC_MSG_CHECKING(for MMX instructions set)
-@@ -542,6 +583,7 @@ __m512i y = _mm512_permutexvar_epi64(_mm512_setr_epi64(0, 1, 4, 5, 2, 3, 6, 7),
-
- ])
-
-+AC_SUBST(CFLAGS_ARMCRYPTO)
- AC_SUBST(CFLAGS_MMX)
- AC_SUBST(CFLAGS_SSE2)
- AC_SUBST(CFLAGS_SSE3)