Stub out atexit because some versions of the sdk/newlib are not corre…

…ctly stripping it
wickerwaka · Jan 13, 2025 · 0aa85fe · 0aa85fe
1 parent 3cd20ed
commit 0aa85fe
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Showing 2 changed files with 7 additions and 3 deletions.
diff --git a/firmware/CMakeLists.txt b/firmware/CMakeLists.txt
@@ -46,6 +46,7 @@ foreach(BUILD_CONFIG 2MBit 1MBit_Clock)
         hardware_pio
         hardware_dma    
         pico_unique_id
+        -Wl,--wrap=atexit
     )
 
     target_compile_definitions(${TARGET} PRIVATE

diff --git a/firmware/main.cpp b/firmware/main.cpp
@@ -16,9 +16,12 @@
 #include "system.h"
 
 
-// TODO
-// Change addr mask to config
-//
+// Dummy atexit implementation because some SDK/newlib versions don't strip
+// atexit and it uses several 100bytes of RAM
+int __wrap_atexit(void *)
+{
+    return 0;
+}
 
 uint32_t rom_offset = 0;