pio: more lwip2 configuration: + without sack for no change in flash …

…footprint
esp8266 · devyte · Oct 9, 2018 · Sep 12, 2018 · Sep 12, 2018 · Sep 12, 2018
commit 60b3b2e8ff99deda85a0a44dc47fb17ee359f500
diff --git a/tools/platformio-build.py b/tools/platformio-build.py
@@ -147,6 +147,18 @@ def scons_patched_match_splitext(path, suffixes=None):
         CPPPATH=[join(FRAMEWORK_DIR, "tools", "sdk", "lwip2", "include")],
         LIBS=["lwip2-1460-feat"]
     )
+elif "PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY_LOW_FLASH" in flatten_cppdefines:
+    env.Append(
+        CPPDEFINES=[("TCP_MSS", 536), ("LWIP_FEATURES", 0)],
+        CPPPATH=[join(FRAMEWORK_DIR, "tools", "sdk", "lwip2", "include")],
+        LIBS=["lwip2-536"]
+    )
+elif "PIO_FRAMEWORK_ARDUINO_LWIP2_HIGHER_BANDWIDTH_LOW_FLASH" in flatten_cppdefines:
+    env.Append(
+        CPPDEFINES=[("TCP_MSS", 1460), ("LWIP_FEATURES", 0)],
+        CPPPATH=[join(FRAMEWORK_DIR, "tools", "sdk", "lwip2", "include")],
+        LIBS=["lwip2-1460"]
+    )
 else:
     env.Append(
         CPPPATH=[join(FRAMEWORK_DIR, "tools", "sdk", "lwip", "include")],