Changeset 2871 for libcacaTweet

Timestamp:

Oct 5, 2008, 5:50:11 PM (11 years ago)

Author:

Sam Hocevar

Message:

Fix detection of floating point assembly instructions. They were
incorrectly detcted as present because gcc was optimising them away.

File:

• libcaca/trunk/configure.ac (modified) (1 diff)

libcaca/trunk/configure.ac

@@ -114 +114 @@
 
 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)])