From 592b4517a57fdcd92cfce123905d7abf0b5f9aa7 Mon Sep 17 00:00:00 2001
From: Maximilian Gerhardt <maximilian.gerhardt@rub.de>
Date: Sun, 22 May 2022 11:59:32 +0200
Subject: [PATCH] Move _GNU_SOURCE from CCFLAGS to CPPDEFINES

Makes _GNU_SOURCE visible in VSCode Intellisense and other IDEs.
---
 tools/platformio-build.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/platformio-build.py b/tools/platformio-build.py
index a462ff391a..5d5cb0c0b6 100644
--- a/tools/platformio-build.py
+++ b/tools/platformio-build.py
@@ -78,7 +78,6 @@ def scons_patched_match_splitext(path, suffixes=None):
         "-mtext-section-literals",
         "-falign-functions=4",
         "-U__STRICT_ANSI__",
-        "-D_GNU_SOURCE",
         "-ffunction-sections",
         "-fdata-sections",
         "-Wall",
@@ -119,6 +118,7 @@ def scons_patched_match_splitext(path, suffixes=None):
         ("F_CPU", "$BOARD_F_CPU"),
         "__ets__",
         "ICACHE_FLASH",
+        "_GNU_SOURCE",
         ("ARDUINO", 10805),
         ("ARDUINO_BOARD", '\\"PLATFORMIO_%s\\"' % env.BoardConfig().id.upper()),
         "FLASHMODE_${BOARD_FLASH_MODE.upper()}",