From ca00c69c9e7f0f4302966fa3f476487816b11290 Mon Sep 17 00:00:00 2001
From: Aleksei Besogonov <b@alex.net>
Date: Thu, 18 Sep 2025 22:29:50 -0700
Subject: [PATCH] Work around broken __has_include

RP2040 tooling has a somewhat broken __has_include support. It doesn't
check for include files outside of the library folder itself, making it
useless for custom configuration.

This commit adds classic #ifndef-#define style configuration support.
---
 src/BER.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/BER.h b/src/BER.h
index e542f7e..2fb9bb6 100644
--- a/src/BER.h
+++ b/src/BER.h
@@ -7,26 +7,32 @@
 #ifdef __has_include
 #if __has_include("SNMPcfg.h")
 #include "SNMPcfg.h"
-#else
+#endif
+#endif
+
 /**
  * @def SNMP_STREAM
  * @brief Defines read and write operations.
  */
+#ifndef SNMP_STREAM
 #define SNMP_STREAM 1
+#endif
 
 /**
  * @def SNMP_VECTOR
  * @brief Defines storage for ArrayBER.
  */
+#ifndef SNMP_VECTOR
 #define SNMP_VECTOR 0
+#endif
 
 /**
  * @def SNMP_CAPACITY
  * @brief Defines capacity of SequenceBER.
  */
+#ifndef SNMP_CAPACITY
 #define SNMP_CAPACITY 6
 #endif
-#endif
 
 #if SNMP_STREAM
 #include <Stream.h>