From 3f583d7c4ecff766aab9048a558ba4cdedd3e6d5 Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@alliedmods.net>
Date: Mon, 1 Nov 2021 14:31:13 -0700
Subject: [PATCH] Don't build SDKs that aren't present.

---
 AMBuildScript | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/AMBuildScript b/AMBuildScript
index db22453..40fdc01 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -157,6 +157,8 @@ class MMSConfig(object):
       if sdk.shouldBuild(self.all_targets):
         if builder.options.hl2sdk_root:
           sdk_path = os.path.join(builder.options.hl2sdk_root, sdk.folder)
+          if not os.path.exists(sdk_path):
+            sdk_path = None
         else:
           sdk_path = ResolveEnvPath(sdk.envvar, sdk.folder)
         if sdk_path is None: