1 files changed, 17 insertions, 0 deletions
diff --git a/buildtools/wafsamba/samba_autoconf.py b/buildtools/wafsamba/samba_autoconf.py
index 8b499825230..78927d85193 100644
--- a/buildtools/wafsamba/samba_autoconf.py
+++ b/buildtools/wafsamba/samba_autoconf.py
@@ -344,6 +344,23 @@ def CHECK_SIZEOF(conf, vars, headers=None, define=None, critical=True):
     return ret
 
 @conf
+def CHECK_SIGN(conf, v, headers=None):
+    '''check the sign of a type'''
+    define_name = v.upper().replace(' ', '_')
+    for op, signed in [('<', 'signed'),
+                       ('>', 'unsigned')]:
+        if CHECK_CODE(conf,
+                      f'static int test_array[1 - 2 * !((({v})-1) {op} 0)];',
+                      define=f'{define_name}_{signed.upper()}',
+                      quote=False,
+                      headers=headers,
+                      local_include=False,
+                      msg=f"Checking if '{v}' is {signed}"):
+            return True
+
+    return False
+
+@conf
 def CHECK_VALUEOF(conf, v, headers=None, define=None):
     '''check the value of a variable/define'''
     ret = True