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-rw-r--r--stmhal/mpconfigport.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/stmhal/mpconfigport.h b/stmhal/mpconfigport.h
index 36a60dfa7..5b99ffca5 100644
--- a/stmhal/mpconfigport.h
+++ b/stmhal/mpconfigport.h
@@ -99,3 +99,6 @@ typedef const void *machine_const_ptr_t; // must be of pointer size
// board specific definitions
#include "mpconfigboard.h"
+
+// We need to provide a declaration/definition of alloca()
+#include <alloca.h>