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-rw-r--r--autoconf/configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 3c2cd3616a..cebdc80182 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -826,7 +826,7 @@ AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h unistd.h utime.h])
AC_CHECK_HEADERS([windows.h])
AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h])
-AC_CHECK_HEADERS([sys/types.h malloc/malloc.h mach/mach.h])
+AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
if test "$ENABLE_THREADS" -eq 1 ; then
AC_CHECK_HEADERS(pthread.h,
AC_SUBST(HAVE_PTHREAD, 1),