From: Ralf Habacker <ralf.habacker@freenet.de>
Date: Thu, 7 Apr 2022 11:55:26 +0000 (+0200)
Subject: cmake: Fix detecting -Wformat-* warnings for gcc
X-Git-Tag: dbus-1.15.0~66^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fb5449e08f063f031bd3423a4c6af12ab5f492c6;p=thirdparty%2Fdbus.git

cmake: Fix detecting -Wformat-* warnings for gcc

gcc expects -Wformat to be set along with these type of warnings.

Signed-off-by: Ralf Habacker <ralf.habacker@freenet.de>
---

diff --git a/cmake/modules/Macros.cmake b/cmake/modules/Macros.cmake
index 04ee287d3..c3c057e6f 100644
--- a/cmake/modules/Macros.cmake
+++ b/cmake/modules/Macros.cmake
@@ -126,6 +126,9 @@ function(check_compiler_warning_flag _flag _result _cxx)
     string(MAKE_C_IDENTIFIER "${_flag}" _varname)
     # required to get errors
     list(APPEND _flag -Werror)
+    if(_flag MATCHES "-Wformat-.*")
+        list(APPEND _flag -Wformat)
+    endif()
     if (_cxx)
         check_cxx_compiler_flag("${_flag}" HAVE_CXX_FLAG${_varname})
         set(${_result} ${HAVE_CXX_FLAG${_varname}} PARENT_SCOPE)