$NetBSD: patch-src_Makevars,v 1.2 2026/06/22 21:53:51 mef Exp $

symbol backtrace_symbols is defined in /usr/lib/libexecinfo

--- src/Makevars.orig	2024-06-17 19:54:52.000000000 +0900
+++ src/Makevars	2026-06-23 06:50:33.955847020 +0900
@@ -3,3 +3,4 @@ CXX_STD = CXX17
 
 ## We need headers from our package, the directory is not automatically included
 PKG_CXXFLAGS = -I../inst/include
+@@PKG_LIBS@@
