tests: Use common code for all tests.
[libgcrypt.git] / configure.ac
index f700080..91562a9 100644 (file)
@@ -1,7 +1,7 @@
 # Configure.ac script for Libgcrypt
 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006,
 #               2007, 2008, 2009, 2011 Free Software Foundation, Inc.
-# Copyright (C) 2012, 2013  g10 Code GmbH
+# Copyright (C) 2012, 2013, 2014, 2015, 2016  g10 Code GmbH
 #
 # This file is part of Libgcrypt.
 #
@@ -21,7 +21,7 @@
 # (Process this file with autoconf to produce a configure script.)
 AC_REVISION($Revision$)
 AC_PREREQ(2.60)
-min_automake_version="1.10"
+min_automake_version="1.14"
 
 # To build a release you need to create a tag with the version number
 # (git tag -s libgcrypt-n.m.k) and run "./autogen.sh --force".  Please
@@ -29,7 +29,7 @@ min_automake_version="1.10"
 # commit and push so that the git magic is able to work.  See below
 # for the LT versions.
 m4_define(mym4_version_major, [1])
-m4_define(mym4_version_minor, [6])
+m4_define(mym4_version_minor, [8])
 m4_define(mym4_version_micro, [0])
 
 # Below is m4 magic to extract and compute the revision number, the
@@ -54,31 +54,35 @@ AC_INIT([libgcrypt],[mym4_full_version],[http://bugs.gnupg.org])
 #   (Interfaces removed:    CURRENT++, AGE=0, REVISION=0)
 #   (Interfaces added:      CURRENT++, AGE++, REVISION=0)
 #   (No interfaces changed:                   REVISION++)
-# CAUTION: Due to the ABI change in 1.6 the LT version numbers below have
-# already been set for the next release.  Thus don't update them for
-# the 1.6.0 release.
-LIBGCRYPT_LT_CURRENT=20
-LIBGCRYPT_LT_AGE=0
-LIBGCRYPT_LT_REVISION=0
+LIBGCRYPT_LT_CURRENT=21
+LIBGCRYPT_LT_AGE=1
+LIBGCRYPT_LT_REVISION=3
 
 
 # If the API is changed in an incompatible way: increment the next counter.
+#
+# 1.6: ABI and API change but the change is to most users irrelevant
+#      and thus the API version number has not been incremented.
 LIBGCRYPT_CONFIG_API_VERSION=1
 
 # If you change the required gpg-error version, please remove
 # unnecessary error code defines in src/gcrypt-int.h.
-NEED_GPG_ERROR_VERSION=1.11
+NEED_GPG_ERROR_VERSION=1.25
 
 PACKAGE=$PACKAGE_NAME
 VERSION=$PACKAGE_VERSION
 
+AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_SRCDIR([src/libgcrypt.vers])
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([serial-tests dist-bzip2])
 AC_CONFIG_HEADER(config.h)
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_LIBOBJ_DIR([compat])
 AC_CANONICAL_HOST
 AM_MAINTAINER_MODE
+AM_SILENT_RULES
+
+AC_ARG_VAR(SYSROOT,[locate config scripts also below that directory])
 
 AH_TOP([
 #ifndef _GCRYPT_CONFIG_H_INCLUDED
@@ -184,7 +188,7 @@ LIBGCRYPT_CONFIG_HOST="$host"
 
 # Definitions for symmetric ciphers.
 available_ciphers="arcfour blowfish cast5 des aes twofish serpent rfc2268 seed"
-available_ciphers="$available_ciphers camellia idea salsa20 gost28147"
+available_ciphers="$available_ciphers camellia idea salsa20 gost28147 chacha20"
 enabled_ciphers=""
 
 # Definitions for public-key ciphers.
@@ -192,13 +196,12 @@ available_pubkey_ciphers="dsa elgamal rsa ecc"
 enabled_pubkey_ciphers=""
 
 # Definitions for message digests.
-available_digests="crc gostr3411-94 md4 md5 rmd160 sha1 sha256"
-available_digests_64="sha512 tiger whirlpool"
+available_digests="crc gostr3411-94 md2 md4 md5 rmd160 sha1 sha256"
+available_digests="$available_digests sha512 sha3 tiger whirlpool stribog"
 enabled_digests=""
 
 # Definitions for kdfs (optional ones)
-available_kdfs="s2k pkdf2"
-available_kdfs_64="scrypt"
+available_kdfs="s2k pkdf2 scrypt"
 enabled_kdfs=""
 
 # Definitions for random modules.
@@ -339,6 +342,7 @@ AC_CHECK_SIZEOF(unsigned short, 2)
 AC_CHECK_SIZEOF(unsigned int, 4)
 AC_CHECK_SIZEOF(unsigned long, 4)
 AC_CHECK_SIZEOF(unsigned long long, 0)
+AC_CHECK_SIZEOF(void *, 0)
 
 AC_TYPE_UINTPTR_T
 
@@ -348,24 +352,36 @@ if test "$ac_cv_sizeof_unsigned_short" = "0" \
     AC_MSG_WARN([Hmmm, something is wrong with the sizes - using defaults]);
 fi
 
+# Ensure that we have UINT64_C before we bother to check for uint64_t
+AC_CACHE_CHECK([for UINT64_C],[gnupg_cv_uint64_c_works],
+   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <inttypes.h>]],
+       [[uint64_t foo=UINT64_C(42);]])],
+     gnupg_cv_uint64_c_works=yes,gnupg_cv_uint64_c_works=no))
+if test "$gnupg_cv_uint64_c_works" = "yes" ; then
+   AC_CHECK_SIZEOF(uint64_t)
+fi
+
 # Do we have any 64-bit data types?
 if test "$ac_cv_sizeof_unsigned_int" != "8" \
    && test "$ac_cv_sizeof_unsigned_long" != "8" \
    && test "$ac_cv_sizeof_unsigned_long_long" != "8" \
    && test "$ac_cv_sizeof_uint64_t" != "8"; then
-    AC_MSG_WARN([No 64-bit types.  Disabling TIGER/192, SCRYPT, SHA-384, \
- and SHA-512])
-else
-  available_digests="$available_digests $available_digests_64"
-  available_kdfs="$available_kdfs $available_kdfs_64"
+    AC_MSG_ERROR([[
+***
+*** No 64-bit integer type available.
+*** It is not possible to build Libgcrypt on this platform.
+***]])
 fi
 
+
 # If not specified otherwise, all available algorithms will be
 # included.
 default_ciphers="$available_ciphers"
 default_pubkey_ciphers="$available_pubkey_ciphers"
 default_digests="$available_digests"
 default_kdfs="$available_kdfs"
+# Blacklist MD2 by default
+default_digests=`echo $default_digests | sed -e 's/md2//g'`
 
 # Substitutions to set generated files in a Emacs buffer to read-only.
 AC_SUBST(emacs_local_vars_begin, ['Local Variables:'])
@@ -524,6 +540,16 @@ if test "$use_m_guard" = yes ; then
     AC_DEFINE(M_GUARD,1,[Define to use the (obsolete) malloc guarding feature])
 fi
 
+# Implementation of the --enable-large-data-tests switch.
+AC_MSG_CHECKING([whether to run large data tests])
+AC_ARG_ENABLE(large-data-tests,
+              AC_HELP_STRING([--enable-large-data-tests],
+                 [Enable the real long ruinning large data tests]),
+             large_data_tests=$enableval,large_data_tests=no)
+AC_MSG_RESULT($large_data_tests)
+AC_SUBST(RUN_LARGE_DATA_TESTS, $large_data_tests)
+
+
 # Implementation of the --with-capabilities switch.
 # Check whether we want to use Linux capabilities
 AC_MSG_CHECKING([whether use of capabilities is requested])
@@ -554,10 +580,6 @@ AC_ARG_ENABLE(padlock-support,
                         [Disable support for the PadLock Engine of VIA processors]),
              padlocksupport=$enableval,padlocksupport=yes)
 AC_MSG_RESULT($padlocksupport)
-if test x"$padlocksupport" = xyes ; then
-  AC_DEFINE(ENABLE_PADLOCK_SUPPORT, 1,
-            [Enable support for the PadLock engine.])
-fi
 
 # Implementation of the --disable-aesni-support switch.
 AC_MSG_CHECKING([whether AESNI support is requested])
@@ -567,6 +589,22 @@ AC_ARG_ENABLE(aesni-support,
              aesnisupport=$enableval,aesnisupport=yes)
 AC_MSG_RESULT($aesnisupport)
 
+# Implementation of the --disable-pclmul-support switch.
+AC_MSG_CHECKING([whether PCLMUL support is requested])
+AC_ARG_ENABLE(pclmul-support,
+              AC_HELP_STRING([--disable-pclmul-support],
+                 [Disable support for the Intel PCLMUL instructions]),
+             pclmulsupport=$enableval,pclmulsupport=yes)
+AC_MSG_RESULT($pclmulsupport)
+
+# Implementation of the --disable-sse41-support switch.
+AC_MSG_CHECKING([whether SSE4.1 support is requested])
+AC_ARG_ENABLE(sse41-support,
+              AC_HELP_STRING([--disable-sse41-support],
+                 [Disable support for the Intel SSE4.1 instructions]),
+             sse41support=$enableval,sse41support=yes)
+AC_MSG_RESULT($sse41support)
+
 # Implementation of the --disable-drng-support switch.
 AC_MSG_CHECKING([whether DRNG support is requested])
 AC_ARG_ENABLE(drng-support,
@@ -574,10 +612,6 @@ AC_ARG_ENABLE(drng-support,
                  [Disable support for the Intel DRNG (RDRAND instruction)]),
              drngsupport=$enableval,drngsupport=yes)
 AC_MSG_RESULT($drngsupport)
-if test x"$drngsupport" = xyes ; then
-  AC_DEFINE(ENABLE_DRNG_SUPPORT, 1,
-            [Enable support for Intel DRNG (RDRAND instruction).])
-fi
 
 # Implementation of the --disable-avx-support switch.
 AC_MSG_CHECKING([whether AVX support is requested])
@@ -603,6 +637,14 @@ AC_ARG_ENABLE(neon-support,
              neonsupport=$enableval,neonsupport=yes)
 AC_MSG_RESULT($neonsupport)
 
+# Implementation of the --disable-arm-crypto-support switch.
+AC_MSG_CHECKING([whether ARMv8 Crypto Extension support is requested])
+AC_ARG_ENABLE(arm-crypto-support,
+              AC_HELP_STRING([--disable-arm-crypto-support],
+                 [Disable support for the ARMv8 Crypto Extension instructions]),
+             armcryptosupport=$enableval,armcryptosupport=yes)
+AC_MSG_RESULT($armcryptosupport)
+
 # Implementation of the --disable-O-flag-munging switch.
 AC_MSG_CHECKING([whether a -O flag munging is requested])
 AC_ARG_ENABLE([O-flag-munging],
@@ -708,16 +750,13 @@ AC_SUBST(PTH_LIBS)
 #
 # Check whether pthreads is available
 #
-AC_CHECK_LIB(pthread,pthread_create,have_pthread=yes)
-if test "$have_pthread" = yes; then
-   AC_DEFINE(HAVE_PTHREAD, ,[Define if we have pthread.])
+if test "$have_w32_system" != yes; then
+  AC_CHECK_LIB(pthread,pthread_create,have_pthread=yes)
+  if test "$have_pthread" = yes; then
+    AC_DEFINE(HAVE_PTHREAD, 1 ,[Define if we have pthread.])
+  fi
 fi
 
-#
-# See which thread system we have
-# FIXME: Thus duplicates the above check.
-#
-gl_LOCK
 
 # Solaris needs -lsocket and -lnsl. Unisys system includes
 # gethostbyname in libsocket but needs libnsl for socket.
@@ -774,6 +813,51 @@ AC_SUBST(FALLBACK_SOCKLEN_T)
 
 
 #
+# Check for __builtin_bswap32 intrinsic.
+#
+AC_CACHE_CHECK(for __builtin_bswap32,
+       [gcry_cv_have_builtin_bswap32],
+       [gcry_cv_have_builtin_bswap32=no
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([],
+          [int x = 0; int y = __builtin_bswap32(x); return y;])],
+          [gcry_cv_have_builtin_bswap32=yes])])
+if test "$gcry_cv_have_builtin_bswap32" = "yes" ; then
+   AC_DEFINE(HAVE_BUILTIN_BSWAP32,1,
+             [Defined if compiler has '__builtin_bswap32' intrinsic])
+fi
+
+
+#
+# Check for __builtin_bswap64 intrinsic.
+#
+AC_CACHE_CHECK(for __builtin_bswap64,
+       [gcry_cv_have_builtin_bswap64],
+       [gcry_cv_have_builtin_bswap64=no
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([],
+          [long long x = 0; long long y = __builtin_bswap64(x); return y;])],
+          [gcry_cv_have_builtin_bswap64=yes])])
+if test "$gcry_cv_have_builtin_bswap64" = "yes" ; then
+   AC_DEFINE(HAVE_BUILTIN_BSWAP64,1,
+             [Defined if compiler has '__builtin_bswap64' intrinsic])
+fi
+
+
+#
+# Check for __builtin_ctz intrinsic.
+#
+AC_CACHE_CHECK(for __builtin_ctz,
+       [gcry_cv_have_builtin_ctz],
+       [gcry_cv_have_builtin_ctz=no
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([],
+          [unsigned int x = 0; int y = __builtin_ctz(x); return y;])],
+          [gcry_cv_have_builtin_ctz=yes])])
+if test "$gcry_cv_have_builtin_ctz" = "yes" ; then
+   AC_DEFINE(HAVE_BUILTIN_CTZ, 1,
+             [Defined if compiler has '__builtin_ctz' intrinsic])
+fi
+
+
+#
 # Check for VLA support (variable length arrays).
 #
 AC_CACHE_CHECK(whether the variable length arrays are supported,
@@ -890,8 +974,28 @@ fi
 
 
 #
+# Check whether the compiler supports the GCC style packed attribute
+#
+AC_CACHE_CHECK([whether the GCC style packed attribute is supported],
+       [gcry_cv_gcc_attribute_packed],
+       [gcry_cv_gcc_attribute_packed=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[struct foolong_s { long b; } __attribute__ ((packed));
+            struct foo_s { char a; struct foolong_s b; }
+              __attribute__ ((packed));
+            enum bar {
+              FOO = 1 / (sizeof(struct foo_s) == (sizeof(char) + sizeof(long))),
+            };]])],
+          [gcry_cv_gcc_attribute_packed=yes])])
+if test "$gcry_cv_gcc_attribute_packed" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_ATTRIBUTE_PACKED,1,
+     [Defined if a GCC style "__attribute__ ((packed))" is supported])
+fi
+
+
+#
 # Check whether the compiler supports 'asm' or '__asm__' keyword for
-# assembler blocks
+# assembler blocks.
 #
 AC_CACHE_CHECK([whether 'asm' assembler keyword is supported],
        [gcry_cv_have_asm],
@@ -915,19 +1019,264 @@ fi
 
 
 #
+# Check whether the compiler supports inline assembly memory barrier.
+#
+if test "$gcry_cv_have_asm" = "no" ; then
+   if test "$gcry_cv_have___asm__" = "yes" ; then
+      AC_CACHE_CHECK([whether inline assembly memory barrier is supported],
+          [gcry_cv_have_asm_volatile_memory],
+          [gcry_cv_have_asm_volatile_memory=no
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+             [[void a(void) { __asm__ volatile("":::"memory"); }]])],
+             [gcry_cv_have_asm_volatile_memory=yes])])
+   fi
+else
+   AC_CACHE_CHECK([whether inline assembly memory barrier is supported],
+       [gcry_cv_have_asm_volatile_memory],
+       [gcry_cv_have_asm_volatile_memory=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[void a(void) { asm volatile("":::"memory"); }]])],
+          [gcry_cv_have_asm_volatile_memory=yes])])
+fi
+if test "$gcry_cv_have_asm_volatile_memory" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_ASM_VOLATILE_MEMORY,1,
+     [Define if inline asm memory barrier is supported])
+fi
+
+
+#
+# Check whether GCC assembler supports features needed for our ARM
+# implementations.  This needs to be done before setting up the
+# assembler stuff.
+#
+AC_CACHE_CHECK([whether GCC assembler is compatible for ARM assembly implementations],
+       [gcry_cv_gcc_arm_platform_as_ok],
+       [gcry_cv_gcc_arm_platform_as_ok=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__(
+                /* Test if assembler supports UAL syntax.  */
+                ".syntax unified\n\t"
+                ".arm\n\t" /* our assembly code is in ARM mode  */
+                /* Following causes error if assembler ignored '.syntax unified'.  */
+                "asmfunc:\n\t"
+                "add %r0, %r0, %r4, ror #12;\n\t"
+
+                /* Test if '.type' and '.size' are supported.  */
+                ".size asmfunc,.-asmfunc;\n\t"
+                ".type asmfunc,%function;\n\t"
+            );]])],
+          [gcry_cv_gcc_arm_platform_as_ok=yes])])
+if test "$gcry_cv_gcc_arm_platform_as_ok" = "yes" ; then
+   AC_DEFINE(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS,1,
+     [Defined if underlying assembler is compatible with ARM assembly implementations])
+fi
+
+
+#
+# Check whether GCC assembler supports features needed for our ARMv8/Aarch64
+# implementations.  This needs to be done before setting up the
+# assembler stuff.
+#
+AC_CACHE_CHECK([whether GCC assembler is compatible for ARMv8/Aarch64 assembly implementations],
+       [gcry_cv_gcc_aarch64_platform_as_ok],
+       [gcry_cv_gcc_aarch64_platform_as_ok=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__(
+                "asmfunc:\n\t"
+                "eor x0, x0, x30, ror #12;\n\t"
+                "add x0, x0, x30, asr #12;\n\t"
+                "eor v0.16b, v0.16b, v31.16b;\n\t"
+
+                /* Test if '.type' and '.size' are supported.  */
+                ".size asmfunc,.-asmfunc;\n\t"
+                ".type asmfunc,@function;\n\t"
+            );]])],
+          [gcry_cv_gcc_aarch64_platform_as_ok=yes])])
+if test "$gcry_cv_gcc_aarch64_platform_as_ok" = "yes" ; then
+   AC_DEFINE(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS,1,
+     [Defined if underlying assembler is compatible with ARMv8/Aarch64 assembly implementations])
+fi
+
+
+#
+# Check whether underscores in symbols are required.  This needs to be
+# done before setting up the assembler stuff.
+#
+GNUPG_SYS_SYMBOL_UNDERSCORE()
+
+
+#################################
+####                         ####
+#### Setup assembler stuff.  ####
+#### Define mpi_cpu_arch.    ####
+####                         ####
+#################################
+AC_ARG_ENABLE(mpi-path,
+              AC_HELP_STRING([--enable-mpi-path=EXTRA_PATH],
+             [prepend EXTRA_PATH to list of CPU specific optimizations]),
+             mpi_extra_path="$enableval",mpi_extra_path="")
+AC_MSG_CHECKING(architecture and mpi assembler functions)
+if test -f $srcdir/mpi/config.links ; then
+    . $srcdir/mpi/config.links
+    AC_CONFIG_LINKS("$mpi_ln_list")
+    ac_cv_mpi_sflags="$mpi_sflags"
+    AC_MSG_RESULT($mpi_cpu_arch)
+else
+    AC_MSG_RESULT(failed)
+    AC_MSG_ERROR([mpi/config.links missing!])
+fi
+MPI_SFLAGS="$ac_cv_mpi_sflags"
+AC_SUBST(MPI_SFLAGS)
+
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_ADD1, test "$mpi_mod_asm_mpih_add1" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_SUB1, test "$mpi_mod_asm_mpih_sub1" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL1, test "$mpi_mod_asm_mpih_mul1" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL2, test "$mpi_mod_asm_mpih_mul2" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL3, test "$mpi_mod_asm_mpih_mul3" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_LSHIFT, test "$mpi_mod_asm_mpih_lshift" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_MPIH_RSHIFT, test "$mpi_mod_asm_mpih_rshift" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_UDIV, test "$mpi_mod_asm_udiv" = yes)
+AM_CONDITIONAL(MPI_MOD_ASM_UDIV_QRNND, test "$mpi_mod_asm_udiv_qrnnd" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_ADD1, test "$mpi_mod_c_mpih_add1" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_SUB1, test "$mpi_mod_c_mpih_sub1" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL1, test "$mpi_mod_c_mpih_mul1" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL2, test "$mpi_mod_c_mpih_mul2" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL3, test "$mpi_mod_c_mpih_mul3" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_LSHIFT, test "$mpi_mod_c_mpih_lshift" = yes)
+AM_CONDITIONAL(MPI_MOD_C_MPIH_RSHIFT, test "$mpi_mod_c_mpih_rshift" = yes)
+AM_CONDITIONAL(MPI_MOD_C_UDIV, test "$mpi_mod_c_udiv" = yes)
+AM_CONDITIONAL(MPI_MOD_C_UDIV_QRNND, test "$mpi_mod_c_udiv_qrnnd" = yes)
+
+# Reset non applicable feature flags.
+if test "$mpi_cpu_arch" != "x86" ; then
+   aesnisupport="n/a"
+   pclmulsupport="n/a"
+   sse41support="n/a"
+   avxsupport="n/a"
+   avx2support="n/a"
+   padlocksupport="n/a"
+   drngsupport="n/a"
+fi
+
+if test "$mpi_cpu_arch" != "arm" ; then
+   if test "$mpi_cpu_arch" != "aarch64" ; then
+     neonsupport="n/a"
+     armcryptosupport="n/a"
+   fi
+fi
+
+
+#############################################
+####                                     ####
+#### Platform specific compiler checks.  ####
+####                                     ####
+#############################################
+
+
+# Following tests depend on warnings to cause compile to fail, so set -Werror
+# temporarily.
+_gcc_cflags_save=$CFLAGS
+CFLAGS="$CFLAGS -Werror"
+
+
+#
+# Check whether compiler supports 'ms_abi' function attribute.
+#
+AC_CACHE_CHECK([whether compiler supports 'ms_abi' function attribute],
+       [gcry_cv_gcc_attribute_ms_abi],
+       [gcry_cv_gcc_attribute_ms_abi=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[int __attribute__ ((ms_abi)) proto(int);]])],
+          [gcry_cv_gcc_attribute_ms_abi=yes])])
+if test "$gcry_cv_gcc_attribute_ms_abi" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_ATTRIBUTE_MS_ABI,1,
+     [Defined if compiler supports "__attribute__ ((ms_abi))" function attribute])
+fi
+
+
+#
+# Check whether compiler supports 'sysv_abi' function attribute.
+#
+AC_CACHE_CHECK([whether compiler supports 'sysv_abi' function attribute],
+       [gcry_cv_gcc_attribute_sysv_abi],
+       [gcry_cv_gcc_attribute_sysv_abi=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[int __attribute__ ((sysv_abi)) proto(int);]])],
+          [gcry_cv_gcc_attribute_sysv_abi=yes])])
+if test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_ATTRIBUTE_SYSV_ABI,1,
+     [Defined if compiler supports "__attribute__ ((sysv_abi))" function attribute])
+fi
+
+
+#
+# Check whether default calling convention is 'ms_abi'.
+#
+if test "$gcry_cv_gcc_attribute_ms_abi" = "yes" ; then
+   AC_CACHE_CHECK([whether default calling convention is 'ms_abi'],
+          [gcry_cv_gcc_default_abi_is_ms_abi],
+          [gcry_cv_gcc_default_abi_is_ms_abi=no
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+             [[void *test(void) {
+                 void *(*def_func)(void) = test;
+                 void *__attribute__((ms_abi))(*msabi_func)(void);
+                 /* warning on SysV abi targets, passes on Windows based targets */
+                 msabi_func = def_func;
+                 return msabi_func;
+             }]])],
+             [gcry_cv_gcc_default_abi_is_ms_abi=yes])])
+   if test "$gcry_cv_gcc_default_abi_is_ms_abi" = "yes" ; then
+      AC_DEFINE(HAVE_GCC_DEFAULT_ABI_IS_MS_ABI,1,
+        [Defined if default calling convention is 'ms_abi'])
+   fi
+fi
+
+
+#
+# Check whether default calling convention is 'sysv_abi'.
+#
+if test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" ; then
+   AC_CACHE_CHECK([whether default calling convention is 'sysv_abi'],
+          [gcry_cv_gcc_default_abi_is_sysv_abi],
+          [gcry_cv_gcc_default_abi_is_sysv_abi=no
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+             [[void *test(void) {
+                 void *(*def_func)(void) = test;
+                 void *__attribute__((sysv_abi))(*sysvabi_func)(void);
+                 /* warning on MS ABI targets, passes on SysV ABI targets */
+                 sysvabi_func = def_func;
+                 return sysvabi_func;
+             }]])],
+             [gcry_cv_gcc_default_abi_is_sysv_abi=yes])])
+   if test "$gcry_cv_gcc_default_abi_is_sysv_abi" = "yes" ; then
+      AC_DEFINE(HAVE_GCC_DEFAULT_ABI_IS_SYSV_ABI,1,
+        [Defined if default calling convention is 'sysv_abi'])
+   fi
+fi
+
+
+# Restore flags.
+CFLAGS=$_gcc_cflags_save;
+
+
+#
 # Check whether GCC inline assembler supports SSSE3 instructions
 # This is required for the AES-NI instructions.
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports SSSE3 instructions],
        [gcry_cv_gcc_inline_asm_ssse3],
-       [gcry_cv_gcc_inline_asm_ssse3=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_ssse3="n/a"
+        else
+          gcry_cv_gcc_inline_asm_ssse3=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[static unsigned char be_mask[16] __attribute__ ((aligned (16))) =
               { 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
             void a(void) {
               __asm__("pshufb %[mask], %%xmm2\n\t"::[mask]"m"(*be_mask):);
             }]])],
-          [gcry_cv_gcc_inline_asm_ssse3=yes])])
+          [gcry_cv_gcc_inline_asm_ssse3=yes])
+        fi])
 if test "$gcry_cv_gcc_inline_asm_ssse3" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_SSSE3,1,
      [Defined if inline assembler supports SSSE3 instructions])
@@ -935,16 +1284,62 @@ fi
 
 
 #
+# Check whether GCC inline assembler supports PCLMUL instructions.
+#
+AC_CACHE_CHECK([whether GCC inline assembler supports PCLMUL instructions],
+       [gcry_cv_gcc_inline_asm_pclmul],
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_pclmul="n/a"
+        else
+          gcry_cv_gcc_inline_asm_pclmul=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[void a(void) {
+              __asm__("pclmulqdq \$0, %%xmm1, %%xmm3\n\t":::"cc");
+            }]])],
+          [gcry_cv_gcc_inline_asm_pclmul=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_pclmul" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_PCLMUL,1,
+     [Defined if inline assembler supports PCLMUL instructions])
+fi
+
+#
+# Check whether GCC inline assembler supports SSE4.1 instructions.
+#
+AC_CACHE_CHECK([whether GCC inline assembler supports SSE4.1 instructions],
+       [gcry_cv_gcc_inline_asm_sse41],
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_sse41="n/a"
+        else
+          gcry_cv_gcc_inline_asm_sse41=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[void a(void) {
+              int i;
+              __asm__("pextrd \$2, %%xmm0, %[out]\n\t" : [out] "=m" (i));
+            }]])],
+          [gcry_cv_gcc_inline_asm_sse41=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_sse41" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_SSE41,1,
+     [Defined if inline assembler supports SSE4.1 instructions])
+fi
+
+
+#
 # Check whether GCC inline assembler supports AVX instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AVX instructions],
        [gcry_cv_gcc_inline_asm_avx],
-       [gcry_cv_gcc_inline_asm_avx=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_avx="n/a"
+        else
+          gcry_cv_gcc_inline_asm_avx=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void a(void) {
-              __asm__("vaesdeclast (%[mem]),%%xmm0,%%xmm7\n\t"::[mem]"r"(0):);
+              __asm__("xgetbv; vaesdeclast (%[mem]),%%xmm0,%%xmm7\n\t"::[mem]"r"(0):);
             }]])],
-          [gcry_cv_gcc_inline_asm_avx=yes])])
+          [gcry_cv_gcc_inline_asm_avx=yes])
+        fi])
 if test "$gcry_cv_gcc_inline_asm_avx" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AVX,1,
      [Defined if inline assembler supports AVX instructions])
@@ -956,12 +1351,16 @@ fi
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AVX2 instructions],
        [gcry_cv_gcc_inline_asm_avx2],
-       [gcry_cv_gcc_inline_asm_avx2=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_avx2="n/a"
+        else
+          gcry_cv_gcc_inline_asm_avx2=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void a(void) {
-              __asm__("vpbroadcastb %%xmm7,%%ymm1\n\t":::);
+              __asm__("xgetbv; vpbroadcastb %%xmm7,%%ymm1\n\t":::"cc");
             }]])],
-          [gcry_cv_gcc_inline_asm_avx2=yes])])
+          [gcry_cv_gcc_inline_asm_avx2=yes])
+        fi])
 if test "$gcry_cv_gcc_inline_asm_avx2" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AVX2,1,
      [Defined if inline assembler supports AVX2 instructions])
@@ -969,34 +1368,143 @@ fi
 
 
 #
+# Check whether GCC inline assembler supports BMI2 instructions
+#
+AC_CACHE_CHECK([whether GCC inline assembler supports BMI2 instructions],
+       [gcry_cv_gcc_inline_asm_bmi2],
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_inline_asm_bmi2="n/a"
+        else
+          gcry_cv_gcc_inline_asm_bmi2=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[void a(void) {
+              __asm__("rorxl \$23, %%eax, %%edx\\n\\t":::"memory");
+            }]])],
+          [gcry_cv_gcc_inline_asm_bmi2=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_bmi2" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_BMI2,1,
+     [Defined if inline assembler supports BMI2 instructions])
+fi
+
+
+#
+# Check whether GCC assembler needs "-Wa,--divide" to correctly handle
+# constant division
+#
+if test $amd64_as_feature_detection = yes; then
+  AC_CACHE_CHECK([whether GCC assembler handles division correctly],
+       [gcry_cv_gcc_as_const_division_ok],
+       [gcry_cv_gcc_as_const_division_ok=no
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__("xorl \$(123456789/12345678), %ebp;\n\t");]])],
+          [gcry_cv_gcc_as_const_division_ok=yes])])
+  if test "$gcry_cv_gcc_as_const_division_ok" = "no" ; then
+    #
+    # Add '-Wa,--divide' to CPPFLAGS and try check again.
+    #
+    _gcc_cppflags_save="$CPPFLAGS"
+    CPPFLAGS="$CPPFLAGS -Wa,--divide"
+    AC_CACHE_CHECK([whether GCC assembler handles division correctly with "-Wa,--divide"],
+         [gcry_cv_gcc_as_const_division_with_wadivide_ok],
+         [gcry_cv_gcc_as_const_division_with_wadivide_ok=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+            [[__asm__("xorl \$(123456789/12345678), %ebp;\n\t");]])],
+            [gcry_cv_gcc_as_const_division_with_wadivide_ok=yes])])
+    if test "$gcry_cv_gcc_as_const_division_with_wadivide_ok" = "no" ; then
+      # '-Wa,--divide' did not work, restore old flags.
+      CPPFLAGS="$_gcc_cppflags_save"
+    fi
+  fi
+fi
+
+
+#
 # Check whether GCC assembler supports features needed for our amd64
 # implementations
 #
 if test $amd64_as_feature_detection = yes; then
-    AC_CACHE_CHECK([whether GCC assembler is compatible for amd64 assembly implementations],
+  AC_CACHE_CHECK([whether GCC assembler is compatible for amd64 assembly implementations],
        [gcry_cv_gcc_amd64_platform_as_ok],
-       [gcry_cv_gcc_amd64_platform_as_ok=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_amd64_platform_as_ok="n/a"
+        else
+          gcry_cv_gcc_amd64_platform_as_ok=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[__asm__(
-                /* Test if '.set' is supported by underlying assembler.  */
-                ".set a0, %rax\n\t"
-                ".set b0, %rdx\n\t"
-                "asmfunc:\n\t"
-                "movq a0, b0;\n\t" /* Fails here if .set ignored by as.  */
-
                 /* Test if '.type' and '.size' are supported.  */
                 /* These work only on ELF targets. */
-               /* TODO: add COFF (mingw64, cygwin64) support to assembly
-                 * implementations.  Mingw64/cygwin64 also require additional
-                 * work because they use different calling convention. */
+               "asmfunc:\n\t"
                 ".size asmfunc,.-asmfunc;\n\t"
                 ".type asmfunc,@function;\n\t"
+               /* Test if assembler allows use of '/' for constant division
+                * (Solaris/x86 issue). If previous constant division check
+                * and "-Wa,--divide" workaround failed, this causes assembly
+                * to be disable on this machine. */
+               "xorl \$(123456789/12345678), %ebp;\n\t"
             );]])],
-          [gcry_cv_gcc_amd64_platform_as_ok=yes])])
+          [gcry_cv_gcc_amd64_platform_as_ok=yes])
+        fi])
   if test "$gcry_cv_gcc_amd64_platform_as_ok" = "yes" ; then
      AC_DEFINE(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS,1,
               [Defined if underlying assembler is compatible with amd64 assembly implementations])
   fi
+  if test "$gcry_cv_gcc_amd64_platform_as_ok" = "no" &&
+     test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" &&
+     test "$gcry_cv_gcc_default_abi_is_ms_abi" = "yes"; then
+    AC_CACHE_CHECK([whether GCC assembler is compatible for WIN64 assembly implementations],
+      [gcry_cv_gcc_win64_platform_as_ok],
+      [gcry_cv_gcc_win64_platform_as_ok=no
+      AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+        [[__asm__(
+              ".globl asmfunc\n\t"
+              "asmfunc:\n\t"
+              "xorq \$(1234), %rbp;\n\t"
+          );]])],
+        [gcry_cv_gcc_win64_platform_as_ok=yes])])
+    if test "$gcry_cv_gcc_win64_platform_as_ok" = "yes" ; then
+      AC_DEFINE(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS,1,
+                [Defined if underlying assembler is compatible with WIN64 assembly implementations])
+    fi
+  fi
+fi
+
+
+#
+# Check whether GCC assembler supports features needed for assembly
+# implementations that use Intel syntax
+#
+AC_CACHE_CHECK([whether GCC assembler is compatible for Intel syntax assembly implementations],
+       [gcry_cv_gcc_platform_as_ok_for_intel_syntax],
+       [if test "$mpi_cpu_arch" != "x86" ; then
+          gcry_cv_gcc_platform_as_ok_for_intel_syntax="n/a"
+        else
+          gcry_cv_gcc_platform_as_ok_for_intel_syntax=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__(
+                ".intel_syntax noprefix\n\t"
+                "pxor xmm1, xmm7;\n\t"
+                /* Intel syntax implementation also use GAS macros, so check
+                 * for them here. */
+                "VAL_A = xmm4\n\t"
+                "VAL_B = xmm2\n\t"
+                ".macro SET_VAL_A p1\n\t"
+                "  VAL_A = \\\\p1 \n\t"
+                ".endm\n\t"
+                ".macro SET_VAL_B p1\n\t"
+                "  VAL_B = \\\\p1 \n\t"
+                ".endm\n\t"
+                "vmovdqa VAL_A, VAL_B;\n\t"
+                "SET_VAL_A eax\n\t"
+                "SET_VAL_B ebp\n\t"
+                "add VAL_A, VAL_B;\n\t"
+                "add VAL_B, 0b10101;\n\t"
+            );]])],
+          [gcry_cv_gcc_platform_as_ok_for_intel_syntax=yes])
+        fi])
+if test "$gcry_cv_gcc_platform_as_ok_for_intel_syntax" = "yes" ; then
+  AC_DEFINE(HAVE_INTEL_SYNTAX_PLATFORM_AS,1,
+            [Defined if underlying assembler is compatible with Intel syntax assembly implementations])
 fi
 
 
@@ -1005,8 +1513,13 @@ fi
 #
 AC_CACHE_CHECK([whether compiler is configured for ARMv6 or newer architecture],
        [gcry_cv_cc_arm_arch_is_v6],
-       [AC_EGREP_CPP(yes,
-          [#if defined(__arm__) && \
+       [if test "$mpi_cpu_arch" != "arm" ; then
+          gcry_cv_cc_arm_arch_is_v6="n/a"
+        else
+          gcry_cv_cc_arm_arch_is_v6=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[
+           #if defined(__arm__) && \
              ((defined(__ARM_ARCH) && __ARM_ARCH >= 6) \
              || defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
              || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
@@ -1014,9 +1527,14 @@ AC_CACHE_CHECK([whether compiler is configured for ARMv6 or newer architecture],
              || defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
              || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
              || defined(__ARM_ARCH_7EM__))
-            yes
+             /* empty */
+           #else
+             /* fail compile if not ARMv6. */
+             not_armv6 not_armv6 = (not_armv6)not_armv6;
            #endif
-          ], gcry_cv_cc_arm_arch_is_v6=yes, gcry_cv_cc_arm_arch_is_v6=no)])
+          ]])],
+          [gcry_cv_cc_arm_arch_is_v6=yes])
+        fi])
 if test "$gcry_cv_cc_arm_arch_is_v6" = "yes" ; then
    AC_DEFINE(HAVE_ARM_ARCH_V6,1,
      [Defined if ARM architecture is v6 or newer])
@@ -1028,11 +1546,14 @@ fi
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports NEON instructions],
        [gcry_cv_gcc_inline_asm_neon],
-       [gcry_cv_gcc_inline_asm_neon=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+       [if test "$mpi_cpu_arch" != "arm" ; then
+          gcry_cv_gcc_inline_asm_neon="n/a"
+        else
+          gcry_cv_gcc_inline_asm_neon=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[__asm__(
                 ".syntax unified\n\t"
-                ".thumb\n\t"
+                ".arm\n\t"
                 ".fpu neon\n\t"
                 "vld1.64 {%q0-%q1}, [%r0]!;\n\t"
                 "vrev64.8 %q0, %q3;\n\t"
@@ -1040,7 +1561,8 @@ AC_CACHE_CHECK([whether GCC inline assembler supports NEON instructions],
                 "vadd.s64 %d3, %d2, %d3;\n\t"
                 );
             ]])],
-          [gcry_cv_gcc_inline_asm_neon=yes])])
+          [gcry_cv_gcc_inline_asm_neon=yes])
+        fi])
 if test "$gcry_cv_gcc_inline_asm_neon" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_NEON,1,
      [Defined if inline assembler supports NEON instructions])
 
 
 #
-# Check whether GCC assembler supports features needed for our ARM
-# implementations
+# Check whether GCC inline assembler supports AArch32 Crypto Extension instructions
 #
-AC_CACHE_CHECK([whether GCC assembler is compatible for ARM assembly implementations],
-       [gcry_cv_gcc_arm_platform_as_ok],
-       [gcry_cv_gcc_arm_platform_as_ok=no
-        AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+AC_CACHE_CHECK([whether GCC inline assembler supports AArch32 Crypto Extension instructions],
+       [gcry_cv_gcc_inline_asm_aarch32_crypto],
+       [if test "$mpi_cpu_arch" != "arm" ; then
+          gcry_cv_gcc_inline_asm_aarch32_crypto="n/a"
+        else
+          gcry_cv_gcc_inline_asm_aarch32_crypto=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[__asm__(
-                /* Test if assembler supports UAL syntax.  */
                 ".syntax unified\n\t"
-                ".thumb\n\t" /* thumb-2 in UAL, thumb-1 otherwise.  */
-                ".code 16\n\t"
-                /* Following causes error if assembler ignored '.syntax unified'.  */
-                "asmfunc:\n\t"
-                "add.w %r0, %r4, %r8, ror #12;\n\t"
+                ".arm\n\t"
+                ".fpu crypto-neon-fp-armv8\n\t"
+
+                "sha1h.32 q0, q0;\n\t"
+                "sha1c.32 q0, q0, q0;\n\t"
+                "sha1p.32 q0, q0, q0;\n\t"
+                "sha1su0.32 q0, q0, q0;\n\t"
+                "sha1su1.32 q0, q0;\n\t"
+
+                "sha256h.32 q0, q0, q0;\n\t"
+                "sha256h2.32 q0, q0, q0;\n\t"
+                "sha1p.32 q0, q0, q0;\n\t"
+                "sha256su0.32 q0, q0;\n\t"
+                "sha256su1.32 q0, q0, q15;\n\t"
+
+                "aese.8 q0, q0;\n\t"
+                "aesd.8 q0, q0;\n\t"
+                "aesmc.8 q0, q0;\n\t"
+                "aesimc.8 q0, q0;\n\t"
+
+                "vmull.p64 q0, d0, d0;\n\t"
+                );
+            ]])],
+          [gcry_cv_gcc_inline_asm_aarch32_crypto=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_aarch32_crypto" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO,1,
+     [Defined if inline assembler supports AArch32 Crypto Extension instructions])
+fi
 
-                /* Test if '.type' and '.size' are supported.  */
-                ".size asmfunc,.-asmfunc;\n\t"
-                ".type asmfunc,%function;\n\t"
-            );]])],
-          [gcry_cv_gcc_arm_platform_as_ok=yes])])
-if test "$gcry_cv_gcc_arm_platform_as_ok" = "yes" ; then
-   AC_DEFINE(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS,1,
-     [Defined if underlying assembler is compatible with ARM assembly implementations])
+
+#
+# Check whether GCC inline assembler supports AArch64 NEON instructions
+#
+AC_CACHE_CHECK([whether GCC inline assembler supports AArch64 NEON instructions],
+       [gcry_cv_gcc_inline_asm_aarch64_neon],
+       [if test "$mpi_cpu_arch" != "aarch64" ; then
+          gcry_cv_gcc_inline_asm_aarch64_neon="n/a"
+        else
+          gcry_cv_gcc_inline_asm_aarch64_neon=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__(
+                ".arch armv8-a\n\t"
+                "mov w0, \#42;\n\t"
+                "dup v0.8b, w0;\n\t"
+                "ld4 {v0.8b,v1.8b,v2.8b,v3.8b},[x0],\#32;\n\t"
+                );
+            ]])],
+          [gcry_cv_gcc_inline_asm_aarch64_neon=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_aarch64_neon" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH64_NEON,1,
+     [Defined if inline assembler supports AArch64 NEON instructions])
+fi
+
+
+#
+# Check whether GCC inline assembler supports AArch64 Crypto Extension instructions
+#
+AC_CACHE_CHECK([whether GCC inline assembler supports AArch64 Crypto Extension instructions],
+       [gcry_cv_gcc_inline_asm_aarch64_crypto],
+       [if test "$mpi_cpu_arch" != "aarch64" ; then
+          gcry_cv_gcc_inline_asm_aarch64_crypto="n/a"
+        else
+          gcry_cv_gcc_inline_asm_aarch64_crypto=no
+          AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+          [[__asm__(
+                ".arch armv8-a+crypto\n\t"
+
+                "sha1h s0, s0;\n\t"
+                "sha1c q0, s0, v0.4s;\n\t"
+                "sha1p q0, s0, v0.4s;\n\t"
+                "sha1su0 v0.4s, v0.4s, v0.4s;\n\t"
+                "sha1su1 v0.4s, v0.4s;\n\t"
+
+                "sha256h q0, q0, v0.4s;\n\t"
+                "sha256h2 q0, q0, v0.4s;\n\t"
+                "sha1p q0, s0, v0.4s;\n\t"
+                "sha256su0 v0.4s, v0.4s;\n\t"
+                "sha256su1 v0.4s, v0.4s, v31.4s;\n\t"
+
+                "aese v0.16b, v0.16b;\n\t"
+                "aesd v0.16b, v0.16b;\n\t"
+                "aesmc v0.16b, v0.16b;\n\t"
+                "aesimc v0.16b, v0.16b;\n\t"
+
+                "pmull v0.1q, v0.1d, v31.1d;\n\t"
+                "pmull2 v0.1q, v0.2d, v31.2d;\n\t"
+                );
+            ]])],
+          [gcry_cv_gcc_inline_asm_aarch64_crypto=yes])
+        fi])
+if test "$gcry_cv_gcc_inline_asm_aarch64_crypto" = "yes" ; then
+   AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO,1,
+     [Defined if inline assembler supports AArch64 Crypto Extension instructions])
 fi
 
 
@@ -1087,7 +1691,7 @@ AC_CHECK_FUNCS(strtoul memmove stricmp atexit raise)
 # Other checks
 AC_CHECK_FUNCS(strerror rand mmap getpagesize sysconf waitpid wait4)
 AC_CHECK_FUNCS(gettimeofday getrusage gethrtime clock_gettime syslog)
-AC_CHECK_FUNCS(fcntl ftruncate)
+AC_CHECK_FUNCS(syscall fcntl ftruncate flockfile)
 
 GNUPG_CHECK_MLOCK
 
@@ -1190,48 +1794,8 @@ fi
 
 
 #
-# Setup assembler stuff.
-#
-# Note that config.links also defines mpi_cpu_arch, which is required
-# later on.
+# Other defines
 #
-GNUPG_SYS_SYMBOL_UNDERSCORE()
-AC_ARG_ENABLE(mpi-path,
-              AC_HELP_STRING([--enable-mpi-path=EXTRA_PATH],
-             [prepend EXTRA_PATH to list of CPU specific optimizations]),
-             mpi_extra_path="$enableval",mpi_extra_path="")
-AC_MSG_CHECKING(for mpi assembler functions)
-if test -f $srcdir/mpi/config.links ; then
-    . $srcdir/mpi/config.links
-    AC_CONFIG_LINKS("$mpi_ln_list")
-    ac_cv_mpi_sflags="$mpi_sflags"
-    AC_MSG_RESULT(done)
-else
-    AC_MSG_RESULT(failed)
-    AC_MSG_ERROR([mpi/config.links missing!])
-fi
-MPI_SFLAGS="$ac_cv_mpi_sflags"
-AC_SUBST(MPI_SFLAGS)
-
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_ADD1, test "$mpi_mod_asm_mpih_add1" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_SUB1, test "$mpi_mod_asm_mpih_sub1" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL1, test "$mpi_mod_asm_mpih_mul1" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL2, test "$mpi_mod_asm_mpih_mul2" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL3, test "$mpi_mod_asm_mpih_mul3" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_LSHIFT, test "$mpi_mod_asm_mpih_lshift" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_MPIH_RSHIFT, test "$mpi_mod_asm_mpih_rshift" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_UDIV, test "$mpi_mod_asm_udiv" = yes)
-AM_CONDITIONAL(MPI_MOD_ASM_UDIV_QRNND, test "$mpi_mod_asm_udiv_qrnnd" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_ADD1, test "$mpi_mod_c_mpih_add1" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_SUB1, test "$mpi_mod_c_mpih_sub1" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL1, test "$mpi_mod_c_mpih_mul1" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL2, test "$mpi_mod_c_mpih_mul2" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL3, test "$mpi_mod_c_mpih_mul3" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_LSHIFT, test "$mpi_mod_c_mpih_lshift" = yes)
-AM_CONDITIONAL(MPI_MOD_C_MPIH_RSHIFT, test "$mpi_mod_c_mpih_rshift" = yes)
-AM_CONDITIONAL(MPI_MOD_C_UDIV, test "$mpi_mod_c_udiv" = yes)
-AM_CONDITIONAL(MPI_MOD_C_UDIV_QRNND, test "$mpi_mod_c_udiv_qrnnd" = yes)
-
 if test mym4_isgit = "yes"; then
     AC_DEFINE(IS_DEVELOPMENT_VERSION,1,
               [Defined if this is not a regular release])
@@ -1319,6 +1883,16 @@ if test x"$aesnisupport" = xyes ; then
     aesnisupport="no (unsupported by compiler)"
   fi
 fi
+if test x"$pclmulsupport" = xyes ; then
+  if test "$gcry_cv_gcc_inline_asm_pclmul" != "yes" ; then
+    pclmulsupport="no (unsupported by compiler)"
+  fi
+fi
+if test x"$sse41support" = xyes ; then
+  if test "$gcry_cv_gcc_inline_asm_sse41" != "yes" ; then
+    sse41support="no (unsupported by compiler)"
+  fi
+fi
 if test x"$avxsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_avx" != "yes" ; then
     avxsupport="no (unsupported by compiler)"
@@ -1331,7 +1905,16 @@ if test x"$avx2support" = xyes ; then
 fi
 if test x"$neonsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_neon" != "yes" ; then
-    neonsupport="no (unsupported by compiler)"
+    if test "$gcry_cv_gcc_inline_asm_aarch64_neon" != "yes" ; then
+      neonsupport="no (unsupported by compiler)"
+    fi
+  fi
+fi
+if test x"$armcryptosupport" = xyes ; then
+  if test "$gcry_cv_gcc_inline_asm_aarch32_crypto" != "yes" ; then
+    if test "$gcry_cv_gcc_inline_asm_aarch64_crypto" != "yes" ; then
+      neonsupport="no (unsupported by compiler)"
+    fi
   fi
 fi
 
@@ -1339,6 +1922,14 @@ if test x"$aesnisupport" = xyes ; then
   AC_DEFINE(ENABLE_AESNI_SUPPORT, 1,
             [Enable support for Intel AES-NI instructions.])
 fi
+if test x"$pclmulsupport" = xyes ; then
+  AC_DEFINE(ENABLE_PCLMUL_SUPPORT, 1,
+            [Enable support for Intel PCLMUL instructions.])
+fi
+if test x"$sse41support" = xyes ; then
+  AC_DEFINE(ENABLE_SSE41_SUPPORT, 1,
+            [Enable support for Intel SSE4.1 instructions.])
+fi
 if test x"$avxsupport" = xyes ; then
   AC_DEFINE(ENABLE_AVX_SUPPORT,1,
             [Enable support for Intel AVX instructions.])
@@ -1351,6 +1942,18 @@ if test x"$neonsupport" = xyes ; then
   AC_DEFINE(ENABLE_NEON_SUPPORT,1,
             [Enable support for ARM NEON instructions.])
 fi
+if test x"$armcryptosupport" = xyes ; then
+  AC_DEFINE(ENABLE_ARM_CRYPTO_SUPPORT,1,
+            [Enable support for ARMv8 Crypto Extension instructions.])
+fi
+if test x"$padlocksupport" = xyes ; then
+  AC_DEFINE(ENABLE_PADLOCK_SUPPORT, 1,
+            [Enable support for the PadLock engine.])
+fi
+if test x"$drngsupport" = xyes ; then
+  AC_DEFINE(ENABLE_DRNG_SUPPORT, 1,
+            [Enable support for Intel DRNG (RDRAND instruction).])
+fi
 
 
 # Define conditional sources and config.h symbols depending on the
@@ -1360,6 +1963,13 @@ LIST_MEMBER(arcfour, $enabled_ciphers)
 if test "$found" = "1"; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS arcfour.lo"
    AC_DEFINE(USE_ARCFOUR, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS arcfour-amd64.lo"
+      ;;
+   esac
 fi
 
 LIST_MEMBER(blowfish, $enabled_ciphers)
@@ -1374,7 +1984,7 @@ if test "$found" = "1" ; then
       ;;
       arm*-*-*)
          # Build with the assembly implementation
-         GCRYPT_CIPHERS="$GCRYPT_CIPHERS blowfish-armv6.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS blowfish-arm.lo"
       ;;
    esac
 fi
@@ -1391,7 +2001,7 @@ if test "$found" = "1" ; then
       ;;
       arm*-*-*)
          # Build with the assembly implementation
-         GCRYPT_CIPHERS="$GCRYPT_CIPHERS cast5-armv6.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS cast5-arm.lo"
       ;;
    esac
 fi
@@ -1400,6 +2010,13 @@ LIST_MEMBER(des, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS des.lo"
    AC_DEFINE(USE_DES, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS des-amd64.lo"
+      ;;
+   esac
 fi
 
 LIST_MEMBER(aes, $enabled_ciphers)
@@ -1411,10 +2028,35 @@ if test "$found" = "1" ; then
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-amd64.lo"
+
+         # Build with the SSSE3 implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ssse3-amd64.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
-         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv6.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-arm.lo"
+
+         # Build with the ARMv8/AArch32 CE implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-ce.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-aarch32-ce.lo"
+      ;;
+      aarch64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-aarch64.lo"
+
+         # Build with the ARMv8/AArch64 CE implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-ce.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-aarch64-ce.lo"
+      ;;
+   esac
+
+   case "$mpi_cpu_arch" in
+     x86)
+         # Build with the AES-NI implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-aesni.lo"
+
+         # Build with the Padlock implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-padlock.lo"
       ;;
    esac
 fi
@@ -1429,6 +2071,14 @@ if test "$found" = "1" ; then
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-amd64.lo"
       ;;
+      arm*-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-arm.lo"
+      ;;
+      aarch64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-aarch64.lo"
+      ;;
    esac
 fi
 
@@ -1448,6 +2098,11 @@ if test "$found" = "1" ; then
       # Build with the AVX2 implementation
       GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent-avx2-amd64.lo"
    fi
+
+   if test x"$neonsupport" = xyes ; then
+      # Build with the NEON implementation
+      GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent-armv7-neon.lo"
+   fi
 fi
 
 LIST_MEMBER(rfc2268, $enabled_ciphers)
@@ -1470,7 +2125,11 @@ if test "$found" = "1" ; then
    case "${host}" in
       arm*-*-*)
          # Build with the assembly implementation
-         GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-armv6.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-arm.lo"
+      ;;
+      aarch64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-aarch64.lo"
       ;;
    esac
 
@@ -1499,6 +2158,18 @@ LIST_MEMBER(salsa20, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20.lo"
    AC_DEFINE(USE_SALSA20, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20-amd64.lo"
+      ;;
+   esac
+
+   if test x"$neonsupport" = xyes ; then
+     # Build with the NEON implementation
+     GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20-armv7-neon.lo"
+   fi
 fi
 
 LIST_MEMBER(gost28147, $enabled_ciphers)
@@ -1507,6 +2178,39 @@ if test "$found" = "1" ; then
    AC_DEFINE(USE_GOST28147, 1, [Defined if this module should be included])
 fi
 
+LIST_MEMBER(chacha20, $enabled_ciphers)
+if test "$found" = "1" ; then
+   GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20.lo"
+   AC_DEFINE(USE_CHACHA20, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-sse2-amd64.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ssse3-amd64.lo"
+         GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-avx2-amd64.lo"
+      ;;
+   esac
+
+   if test x"$neonsupport" = xyes ; then
+     # Build with the NEON implementation
+     GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-armv7-neon.lo"
+   fi
+fi
+
+case "${host}" in
+   x86_64-*-*)
+      # Build with the assembly implementation
+      GCRYPT_CIPHERS="$GCRYPT_CIPHERS poly1305-sse2-amd64.lo"
+      GCRYPT_CIPHERS="$GCRYPT_CIPHERS poly1305-avx2-amd64.lo"
+   ;;
+esac
+
+if test x"$neonsupport" = xyes ; then
+   # Build with the NEON implementation
+   GCRYPT_CIPHERS="$GCRYPT_CIPHERS poly1305-armv7-neon.lo"
+fi
+
 LIST_MEMBER(dsa, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS dsa.lo"
@@ -1528,7 +2232,8 @@ fi
 LIST_MEMBER(ecc, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS \
-                          ecc.lo ecc-curves.lo ecc-misc.lo"
+                          ecc.lo ecc-curves.lo ecc-misc.lo \
+                          ecc-ecdsa.lo ecc-eddsa.lo ecc-gost.lo"
    AC_DEFINE(USE_ECC, 1, [Defined if this module should be included])
 fi
 
@@ -1536,6 +2241,13 @@ LIST_MEMBER(crc, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS crc.lo"
    AC_DEFINE(USE_CRC, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      i?86-*-* | x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS crc-intel-pclmul.lo"
+      ;;
+   esac
 fi
 
 LIST_MEMBER(gostr3411-94, $enabled_digests)
@@ -1548,6 +2260,18 @@ if test "$found" = "1" ; then
    fi
 fi
 
+LIST_MEMBER(stribog, $enabled_digests)
+if test "$found" = "1" ; then
+   GCRYPT_DIGESTS="$GCRYPT_DIGESTS stribog.lo"
+   AC_DEFINE(USE_GOST_R_3411_12, 1, [Defined if this module should be included])
+fi
+
+LIST_MEMBER(md2, $enabled_digests)
+if test "$found" = "1" ; then
+   GCRYPT_DIGESTS="$GCRYPT_DIGESTS md2.lo"
+   AC_DEFINE(USE_MD2, 1, [Defined if this module should be included])
+fi
+
 LIST_MEMBER(md4, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS md4.lo"
@@ -1560,10 +2284,33 @@ if test "$found" = "1" ; then
    AC_DEFINE(USE_MD5, 1, [Defined if this module should be included])
 fi
 
+LIST_MEMBER(rmd160, $enabled_digests)
+if test "$found" = "1" ; then
+   GCRYPT_DIGESTS="$GCRYPT_DIGESTS rmd160.lo"
+   AC_DEFINE(USE_RMD160, 1, [Defined if this module should be included])
+fi
+
 LIST_MEMBER(sha256, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256.lo"
    AC_DEFINE(USE_SHA256, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-ssse3-amd64.lo"
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-avx-amd64.lo"
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-avx2-bmi2-amd64.lo"
+      ;;
+      arm*-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-armv8-aarch32-ce.lo"
+      ;;
+      aarch64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-armv8-aarch64-ce.lo"
+      ;;
+   esac
 fi
 
 LIST_MEMBER(sha512, $enabled_digests)
@@ -1571,12 +2318,43 @@ if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512.lo"
    AC_DEFINE(USE_SHA512, 1, [Defined if this module should be included])
 
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-ssse3-amd64.lo"
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-avx-amd64.lo"
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-avx2-bmi2-amd64.lo"
+      ;;
+      arm*-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-arm.lo"
+      ;;
+   esac
+
    if test x"$neonsupport" = xyes ; then
      # Build with the NEON implementation
      GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-armv7-neon.lo"
    fi
 fi
 
+LIST_MEMBER(sha3, $enabled_digests)
+if test "$found" = "1" ; then
+   GCRYPT_DIGESTS="$GCRYPT_DIGESTS keccak.lo"
+   AC_DEFINE(USE_SHA3, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         :
+      ;;
+   esac
+
+   if test x"$neonsupport" = xyes ; then
+     # Build with the NEON implementation
+     GCRYPT_DIGESTS="$GCRYPT_DIGESTS keccak-armv7-neon.lo"
+   fi
+fi
+
 LIST_MEMBER(tiger, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS tiger.lo"
@@ -1587,13 +2365,38 @@ LIST_MEMBER(whirlpool, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool.lo"
    AC_DEFINE(USE_WHIRLPOOL, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool-sse2-amd64.lo"
+      ;;
+   esac
 fi
 
-# rmd160 and sha1 should be included always.
-GCRYPT_DIGESTS="$GCRYPT_DIGESTS rmd160.lo sha1.lo"
-AC_DEFINE(USE_RMD160, 1, [Defined if this module should be included])
+# SHA-1 needs to be included always for example because it is used by
+# random-csprng.c.
+GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1.lo"
 AC_DEFINE(USE_SHA1, 1,   [Defined if this module should be included])
 
+case "${host}" in
+  x86_64-*-*)
+    # Build with the assembly implementation
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-ssse3-amd64.lo"
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-avx-amd64.lo"
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-avx-bmi2-amd64.lo"
+  ;;
+  arm*-*-*)
+    # Build with the assembly implementation
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv7-neon.lo"
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv8-aarch32-ce.lo"
+  ;;
+  aarch64-*-*)
+    # Build with the assembly implementation
+    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv8-aarch64-ce.lo"
+  ;;
+esac
+
 LIST_MEMBER(scrypt, $enabled_kdfs)
 if test "$found" = "1" ; then
    GCRYPT_KDFS="$GCRYPT_KDFS scrypt.lo"
@@ -1689,11 +2492,25 @@ case "$mpi_cpu_arch" in
         AC_DEFINE(HAVE_CPU_ARCH_ARM, 1,   [Defined for ARM platforms])
         GCRYPT_HWF_MODULES="hwf-arm.lo"
         ;;
+     aarch64)
+        AC_DEFINE(HAVE_CPU_ARCH_ARM, 1,   [Defined for ARM AArch64 platforms])
+        GCRYPT_HWF_MODULES="hwf-arm.lo"
+        ;;
 esac
 AC_SUBST([GCRYPT_HWF_MODULES])
 
 
 #
+# Option to disable building of doc file
+#
+build_doc=yes
+AC_ARG_ENABLE([doc], AC_HELP_STRING([--disable-doc],
+                                    [do not build the documentation]),
+                     build_doc=$enableval, build_doc=yes)
+AM_CONDITIONAL([BUILD_DOC], [test "x$build_doc" != xno])
+
+
+#
 # Provide information about the build.
 #
 BUILD_REVISION="mym4_revision"
@@ -1707,7 +2524,16 @@ changequote([,])dnl
 BUILD_FILEVERSION="${BUILD_FILEVERSION}mym4_revision_dec"
 AC_SUBST(BUILD_FILEVERSION)
 
-BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null || date`
+AC_ARG_ENABLE([build-timestamp],
+  AC_HELP_STRING([--enable-build-timestamp],
+                 [set an explicit build timestamp for reproducibility.
+                  (default is the current time in ISO-8601 format)]),
+     [if test "$enableval" = "yes"; then
+        BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null || date`
+      else
+        BUILD_TIMESTAMP="$enableval"
+      fi],
+     [BUILD_TIMESTAMP="<none>"])
 AC_SUBST(BUILD_TIMESTAMP)
 AC_DEFINE_UNQUOTED(BUILD_TIMESTAMP, "$BUILD_TIMESTAMP",
                    [The time this package was configured for a build])
@@ -1728,6 +2554,8 @@ src/libgcrypt-config
 src/versioninfo.rc
 tests/Makefile
 ])
+AC_CONFIG_FILES([tests/hashtest-256g], [chmod +x tests/hashtest-256g])
+AC_CONFIG_FILES([tests/basic-disable-all-hwf], [chmod +x tests/basic-disable-all-hwf])
 AC_OUTPUT
 
 
@@ -1748,15 +2576,26 @@ GCRY_MSG_SHOW([Random number generator:  ],[$random])
 GCRY_MSG_SHOW([Using linux capabilities: ],[$use_capabilities])
 GCRY_MSG_SHOW([Try using Padlock crypto: ],[$padlocksupport])
 GCRY_MSG_SHOW([Try using AES-NI crypto:  ],[$aesnisupport])
+GCRY_MSG_SHOW([Try using Intel PCLMUL:   ],[$pclmulsupport])
+GCRY_MSG_SHOW([Try using Intel SSE4.1:   ],[$sse41support])
 GCRY_MSG_SHOW([Try using DRNG (RDRAND):  ],[$drngsupport])
 GCRY_MSG_SHOW([Try using Intel AVX:      ],[$avxsupport])
 GCRY_MSG_SHOW([Try using Intel AVX2:     ],[$avx2support])
 GCRY_MSG_SHOW([Try using ARM NEON:       ],[$neonsupport])
+GCRY_MSG_SHOW([Try using ARMv8 crypto:   ],[$armcryptosupport])
 GCRY_MSG_SHOW([],[])
 
-if test "$print_egd_notice" = "yes"; then
+if test "x${gpg_config_script_warn}" != x; then
 cat <<G10EOF
+        Mismatches between the target platform and the to
+        be used libraries have been been detected for:
+         ${gpg_config_script_warn}
+        Please check above for warning messages.
 
+G10EOF
+fi
+if test "$print_egd_notice" = "yes"; then
+cat <<G10EOF
    The performance of the Unix random gatherer module (rndunix) is not
    very good and it does not keep the entropy pool over multiple
    invocations of Libgcrypt base applications.  The suggested way to
@@ -1765,18 +2604,16 @@ cat <<G10EOF
                  Entropy Gathering Daemon (EGD)
 
    which provides a entropy source for the whole system.  It is written
-   in Perl and available at the GnuPG FTP servers.  To enable EGD you
-   should rerun configure with the option "--enable-static-rnd=egd".
-   For more information consult the GnuPG webpages:
+   in Perl and available at the GnuPG FTP servers.  For more information
+   consult the GnuPG site:
 
-             http://www.gnupg.org/download.html#egd
+          https://gnupg.org/related_software/swlist.html#egd
 
 G10EOF
 fi
 
 if test "$gcry_cv_gcc_attribute_aligned" != "yes" ; then
 cat <<G10EOF
-
    Please not that your compiler does not support the GCC style
    aligned attribute. Using this software may evoke bus errors.
 
@@ -1788,4 +2625,5 @@ if test -n "$gpl"; then
   echo "  $gpl"
   echo "included.  These parts are licensed under the GPL and thus the"
   echo "use of this library has to comply with the conditions of the GPL."
+  echo ""
 fi