From 1d7520b68a5132cec07e5403291a63f300c87a75 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Tue, 25 Sep 2018 14:35:30 +0200
Subject: [PATCH] cmake: Add -Wattributs for configure checks

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
---
 ConfigureChecks.cmake | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index de17b850..2ab140db 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -273,6 +273,13 @@ int main(void) {
 # For detecting attributes we need to treat warnings as
 # errors
 if (UNIX)
+    # Get warnings for attributs
+    check_c_compiler_flag("-Wattributs" REQUIRED_FLAGS_WERROR)
+    if (REQUIRED_FLAGS_WERROR)
+        set(CMAKE_REQUIRED_FLAGS "-Wattributes")
+    endif()
+
+    # Turn warnings into errors
     check_c_compiler_flag("-Werror" REQUIRED_FLAGS_WERROR)
     if (REQUIRED_FLAGS_WERROR)
         set(CMAKE_REQUIRED_FLAGS "-Werror")