From c260fee5163cdd3d7eb01576f606e83dcf6f7808 Mon Sep 17 00:00:00 2001
From: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
Date: Tue, 31 Aug 2021 14:47:13 -0300
Subject: [PATCH] libs/libxx: Enforce RTTI for building libcxxabi

It is okay for the application to be built without RTTI (-fno-rrti), but
libcxxabi requires RTTI at least for the library.

Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
---
 libs/libxx/libcxxabi.defs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/libxx/libcxxabi.defs b/libs/libxx/libcxxabi.defs
index 4e4b5b51a2..c1ed95192a 100644
--- a/libs/libxx/libcxxabi.defs
+++ b/libs/libxx/libcxxabi.defs
@@ -55,6 +55,9 @@ else
 CPPSRCS += cxa_noexception.cpp
 endif
 
+# RTTI is required for building the libcxxabi library
+CXXFLAGS += -frtti
+
 DEPPATH += --dep-path libcxxabi/src
 VPATH += libcxxabi/src