From: Christian Göttsche <cgzones@googlemail.com>
Date: Thu, 16 Jan 2020 14:09:46 +0000 (+0100)
Subject: [Minor] do not pass invalid C warnings to C++ flags
X-Git-Tag: 2.3~85^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fpull%2F3220%2Fhead;p=thirdparty%2Frspamd.git

[Minor] do not pass invalid C warnings to C++ flags

cc1plus: warning: command line option ‘-Wno-pointer-sign’ is valid for C/ObjC but not for C++
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
---

diff --git a/cmake/CompilerWarnings.cmake b/cmake/CompilerWarnings.cmake
index b9bb7ffde2..4dd011d988 100644
--- a/cmake/CompilerWarnings.cmake
+++ b/cmake/CompilerWarnings.cmake
@@ -35,10 +35,12 @@ IF(SUPPORT_WUNUSED_VAR)
     ADD_COMPILE_OPTIONS("-Wunused-variable")
 ENDIF(SUPPORT_WUNUSED_VAR)
 IF(SUPPORT_WPOINTER_SIGN)
-    ADD_COMPILE_OPTIONS("-Wno-pointer-sign")
+    # only valid for C
+    ADD_COMPILE_OPTIONS($<$<COMPILE_LANGUAGE:C>:-Wno-pointer-sign>)
 ENDIF(SUPPORT_WPOINTER_SIGN)
 IF(SUPPORT_WSTRICT_PROTOTYPES)
-    ADD_COMPILE_OPTIONS("-Wstrict-prototypes")
+    # only valid for C
+    ADD_COMPILE_OPTIONS($<$<COMPILE_LANGUAGE:C>:-Wstrict-prototypes>)
 ENDIF(SUPPORT_WSTRICT_PROTOTYPES)
 IF(SUPPORT_WSTRICT_ALIASING)
     ADD_COMPILE_OPTIONS("-Wno-strict-aliasing")