From 956aac65d49c36d27c5c7b1c569bb6c2571ae584 Mon Sep 17 00:00:00 2001
From: Ralf Habacker <ralf.habacker@freenet.de>
Date: Thu, 11 Nov 2021 13:24:06 +0100
Subject: cmake: take over some fatal warnings from autotools

Adopt various fatal warnings from the autotools build system
to see corresponding build errors also in cmake.
---
 CMakeLists.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index dc5d60d6..c18bb2d9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -271,7 +271,13 @@ if(MSVC)
 else()
     set(WARNINGS "sign-compare")
     set(WARNINGS_DISABLED "")
-    set(WARNINGS_ERRORS "")
+    set(WARNINGS_ERRORS
+        missing-prototypes
+        strict-prototypes
+        declaration-after-statement
+        implicit-function-declaration
+        undef
+    )
 endif()
 generate_warning_cflags(WARNINGS_CFLAGS "${WARNINGS}" "${WARNINGS_DISABLED}" "${WARNINGS_ERRORS}")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNINGS_CFLAGS}")
-- 
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