From 484567f2421e8e99d6e68ac014afa6c8e78845ce Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Sat, 23 Jan 2021 15:54:52 +0200
Subject: [PATCH] Project's "lib_compat_mode" has higher priority than
 "library.json"

---
 platformio/builder/tools/piolib.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/platformio/builder/tools/piolib.py b/platformio/builder/tools/piolib.py
index 97e2637a..792d6fab 100644
--- a/platformio/builder/tools/piolib.py
+++ b/platformio/builder/tools/piolib.py
@@ -773,9 +773,14 @@ class PlatformIOLibBuilder(LibBuilderBase):
 
     @property
     def lib_compat_mode(self):
-        mode = self._manifest.get("build", {}).get(
-            "libCompatMode",
+        missing = object()
+        mode = self.env.GetProjectConfig().getraw(
+            "env:" + self.env["PIOENV"], "lib_compat_mode", missing
         )
+        if mode == missing:
+            mode = self._manifest.get("build", {}).get(
+                "libCompatMode",
+            )
         if not mode and self._manifest.get("platforms"):
             mode = "strict"
         # pylint: disable=no-member