From e8b34b419e44e0b95622f45c0f17487e241b1961 Mon Sep 17 00:00:00 2001
From: Ralf Habacker <ralf.habacker@freenet.de>
Date: Tue, 30 Nov 2021 10:14:05 +0100
Subject: [PATCH] =?UTF-8?q?Fix=20gcc=20compile=20error:=20redundant=20rede?=
 =?UTF-8?q?claration=20of=20=E2=80=98environ=E2=80=99=20[-Werror=3Dredunda?=
 =?UTF-8?q?nt-decls]?=
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Cherry picked from dbus/dbus!227
---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d382403..8b0cdf42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -545,6 +545,11 @@ set(DBUS_DAEMON_NAME "dbus-daemon" CACHE STRING "The name of the dbus daemon exe
 
 #include(ConfigureChecks.cmake)
 
+# only defined but expected as boolean
+if(DEFINED HAVE_DECL_ENVIRON)
+    set(HAVE_DECL_ENVIRON 1)
+endif()
+
 # compiler definitions
 add_definitions(-DHAVE_CONFIG_H)
 add_definitions(${DBUS_BUS_CFLAGS})