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-rw-r--r--configure.ac3
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index a821edf2a..a65a957e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -144,6 +144,7 @@ AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AX_GCC_BUILTIN([__builtin_clz])
AX_GCC_BUILTIN([__builtin_clzll])
+AX_GCC_BUILTIN([__builtin_ffs])
AC_DEFINE([_GNU_SOURCE], 1, [Define to get access to GNU/Linux extension])
@@ -156,7 +157,7 @@ AC_CHECK_FUNCS([ftruncate gethostname getpagesize gettimeofday localtime_r \
memchr memset mkdir mkfifo munmap nl_langinfo pselect realpath rmdir setenv \
setlocale strcasecmp strchr strcspn strdup strerror strncasecmp strndup \
strrchr strspn strstr strtol strtoul uname], , [AC_MSG_ERROR(bailing out)])
-AC_CHECK_FUNCS([prlimit])
+AC_CHECK_FUNCS([ffs prlimit versionsort])
AC_FUNC_ALLOCA
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_CHOWN