1 files changed, 6 insertions, 2 deletions

diff --git a/m4/check-libc.m4 b/m4/check-libc.m4
index 066b394..d9b7b88 100644
--- a/m4/check-libc.m4
+++ b/m4/check-libc.m4
@@ -2,11 +2,12 @@ AC_DEFUN([CHECK_LIBC_COMPAT], [
 # Check for libc headers
 AC_CHECK_HEADERS([err.h readpassphrase.h])
 # Check for general libc functions
-AC_CHECK_FUNCS([asprintf getpagesize inet_ntop inet_pton memmem readpassphrase])
-AC_CHECK_FUNCS([reallocarray recallocarray])
+AC_CHECK_FUNCS([asprintf freezero getpagesize inet_ntop inet_pton memmem])
+AC_CHECK_FUNCS([readpassphrase reallocarray recallocarray])
 AC_CHECK_FUNCS([strlcat strlcpy strndup strnlen strsep strtonum])
 AC_CHECK_FUNCS([timegm _mkgmtime])
 AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
+AM_CONDITIONAL([HAVE_FREEZERO], [test "x$ac_cv_func_freezero" = xyes])
 AM_CONDITIONAL([HAVE_GETPAGESIZE], [test "x$ac_cv_func_getpagesize" = xyes])
 AM_CONDITIONAL([HAVE_INET_NTOP], [test "x$ac_cv_func_inet_ntop" = xyes])
 AM_CONDITIONAL([HAVE_INET_PTON], [test "x$ac_cv_func_inet_pton" = xyes])
@@ -170,6 +171,9 @@ fi
 if test "x$ac_cv_func_explicit_bzero" = "xno" ; then
         echo explicit_bzero >> $crypto_p_sym
 fi
+if test "x$ac_cv_func_freezero" = "xno" ; then
+        echo freezero >> $crypto_p_sym
+fi
 if test "x$ac_cv_func_inet_pton" = "xno" ; then
         echo inet_pton >> $crypto_p_sym
 fi