diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/c-compiler.m4 | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4 index 05fa82518f8..7c0d52b515f 100644 --- a/config/c-compiler.m4 +++ b/config/c-compiler.m4 @@ -381,22 +381,16 @@ fi])# PGAC_C_BUILTIN_OP_OVERFLOW # PGAC_C_BUILTIN_POPCOUNT # ------------------------- AC_DEFUN([PGAC_C_BUILTIN_POPCOUNT], -[define([Ac_cachevar], [AS_TR_SH([pgac_cv_popcount])])dnl -AC_CACHE_CHECK([for __builtin_popcount], [Ac_cachevar], -[pgac_save_CFLAGS=$CFLAGS -CFLAGS="$pgac_save_CFLAGS -mpopcnt" -AC_COMPILE_IFELSE([AC_LANG_SOURCE( -[static int x = __builtin_popcount(255);])], -[Ac_cachevar=yes], -[Ac_cachevar=no]) -CFLAGS="$pgac_save_CFLAGS"]) -if test x"$Ac_cachevar" = x"yes"; then - CFLAGS_POPCNT="-mpopcnt" +[AC_CACHE_CHECK([for __builtin_popcount], pgac_cv__builtin_popcount, +[AC_COMPILE_IFELSE([AC_LANG_SOURCE( +[static int x = __builtin_popcount(255);] +)], +[pgac_cv__builtin_popcount=yes], +[pgac_cv__builtin_popcount=no])]) +if test x"$pgac_cv__builtin_popcount" = x"yes"; then AC_DEFINE(HAVE__BUILTIN_POPCOUNT, 1, [Define to 1 if your compiler understands __builtin_popcount.]) -fi -undefine([Ac_cachevar])dnl -])# PGAC_C_BUILTIN_POPCOUNT +fi])# PGAC_C_BUILTIN_POPCOUNT |