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Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 75eafc8..caa5aed 100644 --- a/configure.ac +++ b/configure.ac @@ -309,6 +309,15 @@ if test "x$st_cv_sa_restorer" != xno; then [SA_RESTORER defined in <asm/signal.h>]) fi +AC_CACHE_CHECK([for __builtin_popcount], [st_cv_have___builtin_popcount], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_popcount(0)])], + [st_cv_have___builtin_popcount=yes], + [st_cv_have___builtin_popcount=no])]) +if test "x$st_cv_have___builtin_popcount" = xyes; then + AC_DEFINE([HAVE___BUILTIN_POPCOUNT], [1], + [Define to 1 if the system provides __builtin_popcount function]) +fi + AC_PATH_PROG([PERL], [perl]) AC_CONFIG_FILES([Makefile tests/Makefile]) |