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Fix detection of floating point assembly instructions. They were

incorrectly detcted as present because gcc was optimising them away.
tags/v0.99.beta16
Sam Hocevar sam 16 years ago
parent
commit
7e9483fdc8
1 changed files with 4 additions and 4 deletions
  1. +4
    -4
      configure.ac

+ 4
- 4
configure.ac View File

@@ -113,15 +113,15 @@ AC_TRY_COMPILE([#include <windows.h>],[Sleep(42);],
[AC_MSG_RESULT(no)])

AC_MSG_CHECKING(for fsin/fcos)
AC_TRY_COMPILE([],[double x; asm("fsin\n\tfcos":"=t"(x):);],
AC_TRY_COMPILE([],[double x; asm volatile("fsin\n\tfcos":"=t"(x):);],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_FSIN_FCOS, 1, [Define to 1 if you have the `fsin' and `fcos' operands.])],
AC_DEFINE(HAVE_FSIN_FCOS, 1, [Define to 1 if you have the `fsin' and `fcos' instructions.])],
[AC_MSG_RESULT(no)])

AC_MSG_CHECKING(for fldln2/fxch/fyl2x)
AC_TRY_COMPILE([],[double x; asm("fldln2; fldln2; fxch; fyl2x":"=t"(x):);],
AC_TRY_COMPILE([],[double x; asm volatile("fldln2; fldln2; fxch; fyl2x":"=t"(x):);],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_FLDLN2, 1, [Define to 1 if you have the `fldln2' and other floating points operands.])],
AC_DEFINE(HAVE_FLDLN2, 1, [Define to 1 if you have the `fldln2' and other floating point instructions.])],
[AC_MSG_RESULT(no)])

AC_CHECK_HEADERS(zlib.h)


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