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Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 2a9ee018a0..42b8448cfe 100644 --- a/configure.ac +++ b/configure.ac @@ -550,6 +550,8 @@ AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64],,, #include <byteswap.h> #endif]) +AC_CHECK_DECLS([__builtin_clz, __builtin_clzl, __builtin_clzll]) + dnl Check for MSG_NOSIGNAL AC_MSG_CHECKING(for MSG_NOSIGNAL) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], |