From 2010e8f949ab7b4555b99dbf184e149a3f33df46 Mon Sep 17 00:00:00 2001
From: "Christian W. Zuckschwerdt" <christian@zuckschwerdt.org>
Date: Fri, 24 Dec 2021 11:03:06 +0100
Subject: [PATCH] minor: Fix a compiler flag needs GCC 7

[Retrieved from:
https://github.com/merbanan/rtl_433/commit/2010e8f949ab7b4555b99dbf184e149a3f33df46]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3f11ac99..bfa6595ca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,7 +74,9 @@ if(("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" MATCHES
     ADD_DEFINITIONS(-pedantic)
     ADD_DEFINITIONS(-Wshadow)
     ADD_DEFINITIONS(-Wmissing-prototypes)
-    ADD_DEFINITIONS(-Wimplicit-fallthrough)
+    if("${CMAKE_C_COMPILER_ID}" MATCHES "Clang" OR NOT "7.0.0" VERSION_GREATER CMAKE_C_COMPILER_VERSION)
+        ADD_DEFINITIONS(-Wimplicit-fallthrough)
+    endif()
     #ADD_DEFINITIONS(-Wfloat-equal)
     #ADD_DEFINITIONS(-Wbad-function-cast)
     #ADD_DEFINITIONS(-Wdocumentation)