From b4142760a52c5a53a17367a2c9376aefd3947f98 Mon Sep 17 00:00:00 2001
From: Leonel Lopes Parente <lnlp@appfactors.com>
Date: Thu, 3 Jun 2021 12:09:07 +0200
Subject: [PATCH] Fix nodemcuv2 PRINTF_TO for espressif8266 v3.0.0

Add -D _GNU_SOURCE to [env:nodemcuv2] in platformio.ini.
Espressif8266 platform v3.0.0 now also requires this,
otherwise LMIC_PRINTF_TO will fail to compile.
---
 platformio.ini | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/platformio.ini b/platformio.ini
index 58562cf..7696658 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -741,6 +741,7 @@ build_flags =
     ${mcci_lmic.build_flags} 
     -D BSFILE=\"boards/bsf_nodemcuv2.h\"
     -D MONITOR_SPEED=${env:nodemcuv2.monitor_speed}
+    -D _GNU_SOURCE
     -D LMIC_PRINTF_TO=Serial    
     -D USE_SERIAL
     -D USE_LED
@@ -779,8 +780,8 @@ build_flags =
     ${mcci_lmic.build_flags} 
     -D BSFILE=\"boards/bsf_pico.h\"
     -D MONITOR_SPEED=${common.monitor_speed}
-    -D _GNU_SOURCE    
-    -D LMIC_PRINTF_TO=SerialUSB    
+    -D _GNU_SOURCE
+    -D LMIC_PRINTF_TO=SerialUSB
     -D USE_SERIAL
     -D USE_LED
     ; -D USE_DISPLAY             ; Requires external I2C OLED display