From: cunix@mail.de
Date: 2023-03-09 22:00:00
Subject: scons 4.5.1 regression
References: https://github.com/godotengine/godot/issues/74683

work around regression of scons 4.5.1
expected to be fixed with 4.5.2

diff --git a/platform/linuxbsd/detect.py b/platform/linuxbsd/detect.py
index 549319a750..0214ebd8bd 100644
--- a/platform/linuxbsd/detect.py
+++ b/platform/linuxbsd/detect.py
@@ -306,6 +306,7 @@ def configure(env: "Environment"):
     if env["pulseaudio"]:
         if not env["use_sowrap"]:
             if os.system("pkg-config --exists libpulse") == 0:  # 0 means found
+                env["CPPDEFINES"] = list(env["CPPDEFINES"])
                 env.ParseConfig("pkg-config libpulse --cflags --libs")
                 env.Append(CPPDEFINES=["PULSEAUDIO_ENABLED", "_REENTRANT"])
             else: