From 8ccbba4f55fa42e8bd2059d1635bea9625452950 Mon Sep 17 00:00:00 2001
From: Joerie de Gram <j.de.gram@gmail.com>
Date: Wed, 19 Jan 2022 21:35:51 +0100
Subject: [PATCH] aws-c-common: emit unwind information for RISC-V

Pass -fasynchronous-unwind-tables in CFLAGS for RISC-V.

This fixes functionality which depends on backtrace() and enables
running the test suite without error.
---
 pkgs/development/libraries/aws-c-common/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/aws-c-common/default.nix b/pkgs/development/libraries/aws-c-common/default.nix
index 79296a8e04f6f..4af6d9b0ac421 100644
--- a/pkgs/development/libraries/aws-c-common/default.nix
+++ b/pkgs/development/libraries/aws-c-common/default.nix
@@ -21,6 +21,8 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
     "-DCMAKE_SKIP_BUILD_RPATH=OFF" # for tests
+  ] ++ lib.optionals stdenv.hostPlatform.isRiscV [
+    "-DCMAKE_C_FLAGS=-fasynchronous-unwind-tables"
   ];
 
   # aws-c-common misuses cmake modules, so we need