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Use HAVE_TI_MODE for the macro and HAVE_TI_MODE_V for the substitution

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This commit is contained in:
Frank Denis 2013-04-21 10:14:38 -07:00
parent 08e08c966b
commit 019064e663
2 changed files with 12 additions and 8 deletions
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16
configure.ac
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@ -159,21 +159,25 @@ AC_C_BIGENDIAN(
)
AC_MSG_CHECKING(for 128-bit arithmetic)
have_ti_mode=no
HAVE_TI_MODE_V=0
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <limits.h>
]], [[
#ifndef __GNUC__
# error mode(TI) is a gcc extension
#endif
#if defined(__arm__) || defined(__ARMEL__)
# error clang doesn't properly compile smult_curve25519_donna_c64.c on arm
#endif
typedef unsigned uint128_t __attribute__((mode(TI)));
uint128_t x;
(void) x;
return sizeof(x) / CHAR_BIT != 16U
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_TI_MODE], [1], [gcc TI mode is available])
have_ti_mode=yes],
HAVE_TI_MODE_V=1],
[AC_MSG_RESULT(no)])
AM_CONDITIONAL([HAVE_TI_MODE], [test x$have_ti_mode = xyes])
AC_SUBST([HAVE_TI_MODE])
AM_CONDITIONAL([HAVE_TI_MODE], [test $HAVE_TI_MODE_V = 1])
AC_SUBST(HAVE_TI_MODE_V)
dnl Checks for functions and headers

4
src/libsodium/include/sodium/crypto_scalarmult_curve25519.h.in
View File

@ -1,7 +1,7 @@
#ifndef crypto_scalarmult_curve25519_H
#define crypto_scalarmult_curve25519_H
#if @HAVE_TI_MODE@-1 == 0
#if @HAVE_TI_MODE_V@-1 == 0
# define SODIUM_HAVE_TI_MODE
#endif
@ -12,7 +12,7 @@
extern "C" {
#endif
#ifndef SODIUM_HAVE_TI_MODE
#ifdef SODIUM_HAVE_TI_MODE
extern int crypto_scalarmult_curve25519_donna_c64(unsigned char *,const unsigned char *,const unsigned char *);
extern int crypto_scalarmult_curve25519_donna_c64_base(unsigned char *,const unsigned char *);