diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index bc1aa03..faaa134 100644 --- a/configure.ac +++ b/configure.ac @@ -173,6 +173,19 @@ dnl Checks for library functions. AC_CHECK_FUNCS(getline getopt_long setenv setpgid setpgrp setsid) AC_CHECK_FUNCS(unsetenv vsnprintf) +AH_TEMPLATE([HAVE___BUILTIN_PREFETCH], + [Define to 1 if your compiler supports the `__builtin_prefetch' function.]) +AC_MSG_CHECKING([for __builtin_prefetch()]) +AC_LINK_IFELSE([AC_LANG_PROGRAM([], + [ + int a = 9; + __builtin_prefetch(&a); + return 0; + ])], + [AC_DEFINE([HAVE___BUILTIN_PREFETCH], 1) + AC_MSG_RESULT(yes)], + [AC_MSG_RESULT(no)]) + AM_LANGINFO_CODESET AC_CONFIG_FILES([Makefile doc/Makefile src/Makefile contrib/Makefile]) |