diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 5e57868e..4a4a2aac 100644 --- a/configure.ac +++ b/configure.ac @@ -557,6 +557,14 @@ if test x"$drngsupport" = xyes ; then [Enable support for Intel DRNG (RDRAND instruction).]) fi +# Implementation of the --disable-avx-support switch. +AC_MSG_CHECKING([whether AVX support is requested]) +AC_ARG_ENABLE(avx-support, + AC_HELP_STRING([--disable-avx-support], + [Disable support for the Intel AVX instructions]), + avxsupport=$enableval,avxsupport=yes) +AC_MSG_RESULT($avxsupport) + # Implementation of the --disable-O-flag-munging switch. AC_MSG_CHECKING([whether a -O flag munging is requested]) AC_ARG_ENABLE([O-flag-munging], @@ -842,6 +850,32 @@ if test "$gcry_cv_have_asm" = "no" ; then 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( + [[void a(void) { + __asm__("vaesdeclast (%[mem]),%%xmm0,%%xmm7\n\t"::[mem]"r"(0):); + }]])], + [gcry_cv_gcc_inline_asm_avx=yes])]) +if test "$gcry_cv_gcc_inline_asm_avx" = "yes" ; then + AC_DEFINE(HAVE_GCC_INLINE_ASM_AVX,1, + [Defined if inline assembler supports AVX instructions]) + + if test x"$avxsupport" = xyes ; then + AC_DEFINE(ENABLE_AVX_SUPPORT,1, + [Enable support for Intel AVX instructions.]) + fi +else + if test x"$avxsupport" = xyes ; then + avxsupport="no (unsupported by compiler)" + fi +fi + + ####################################### #### Checks for library functions. #### ####################################### @@ -1139,6 +1173,13 @@ LIST_MEMBER(camellia, $enabled_ciphers) if test "$found" = "1" ; then GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia.lo camellia-glue.lo" AC_DEFINE(USE_CAMELLIA, 1, [Defined if this module should be included]) + + if test x"$avxsupport" = xyes ; then + if test x"$aesnisupport" = xyes ; then + # Build with the AES-NI/AVX implementation + GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia_aesni_avx_x86-64.lo" + fi + fi fi LIST_MEMBER(idea, $enabled_ciphers) @@ -1358,6 +1399,7 @@ echo " Try using Padlock crypto: $padlocksupport Try using AES-NI crypto: $aesnisupport Try using DRNG (RDRAND): $drngsupport + Try using Intel AVX: $avxsupport " if test "$print_egd_notice" = "yes"; then |