$NetBSD: patch-src_Makevars,v 1.1 2026/06/02 22:52:39 mef Exp $

symbol backtrace_symbols is defined in /usr/lib/libexecinfo

--- src/Makevars.orig	2024-06-17 19:54:52.000000000 +0900
+++ src/Makevars	2026-06-03 07:48:22.110859722 +0900
@@ -3,3 +3,10 @@ CXX_STD = CXX17
 
 ## We need headers from our package, the directory is not automatically included
 PKG_CXXFLAGS = -I../inst/include
+
+UNAME := $(shell uname)
+
+ifneq ($(UNAME), Linux)
+PKG_LIBS += -lexecinfo
+endif
+
