diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/configure.ac b/configure.ac index 2223aeda04a..c060f9b6274 100644 --- a/configure.ac +++ b/configure.ac @@ -2221,7 +2221,7 @@ PGAC_HAVE_GCC__ATOMIC_INT32_CAS PGAC_HAVE_GCC__ATOMIC_INT64_CAS -# Check for x86 cpuid instruction +# Check for __get_cpuid() and __cpuid() AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid], [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <cpuid.h>], [[unsigned int exx[4] = {0, 0, 0, 0}; @@ -2231,17 +2231,18 @@ AC_CACHE_CHECK([for __get_cpuid], [pgac_cv__get_cpuid], [pgac_cv__get_cpuid="no"])]) if test x"$pgac_cv__get_cpuid" = x"yes"; then AC_DEFINE(HAVE__GET_CPUID, 1, [Define to 1 if you have __get_cpuid.]) -fi - -AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid], -[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>], - [[unsigned int exx[4] = {0, 0, 0, 0}; - __get_cpuid(exx[0], 1); - ]])], - [pgac_cv__cpuid="yes"], - [pgac_cv__cpuid="no"])]) -if test x"$pgac_cv__cpuid" = x"yes"; then - AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.]) +else + # __cpuid() + AC_CACHE_CHECK([for __cpuid], [pgac_cv__cpuid], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <intrin.h>], + [[unsigned int exx[4] = {0, 0, 0, 0}; + __cpuid(exx, 1); + ]])], + [pgac_cv__cpuid="yes"], + [pgac_cv__cpuid="no"])]) + if test x"$pgac_cv__cpuid" = x"yes"; then + AC_DEFINE(HAVE__CPUID, 1, [Define to 1 if you have __cpuid.]) + fi fi # Check for Intel SSE 4.2 intrinsics to do CRC calculations. |