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 -r -U 5 a/platform/linuxbsd/detect.py b/platform/linuxbsd/detect.py
--- a/platform/linuxbsd/detect.py
+++ b/platform/linuxbsd/detect.py
@@ -305,10 +305,11 @@
             env.Append(CPPDEFINES=["ALSA_ENABLED", "ALSAMIDI_ENABLED"])
 
     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:
                 print("Warning: PulseAudio development libraries not found. Disabling the PulseAudio audio driver.")
                 env["pulseaudio"] = False