$OpenBSD: patch-examples_Makefile,v 1.2 2019/05/20 15:12:28 schwarze Exp $

we renamed the library to execinfo

Index: examples/Makefile
--- examples/Makefile.orig
+++ examples/Makefile
@@ -1,6 +1,6 @@
 # $backtrace$
 
-LOCALBASE?=/usr/local
+LOCALBASE?=${PREFIX}
 
 PROG=backtrace_test
 NOMAN=
@@ -10,7 +10,7 @@ COPTS= -O0
 DEBUG+= -ggdb3
 CFLAGS+= -Wall -Werror
 CPPFLAGS+= -I${LOCALBASE}/include -I../../libbacktrace -I../libbacktrace
-LDFLAGS+= -L${LOCALBASE}/lib -L../../libbacktrace/obj -L../libbacktrace/ -lbacktrace
+LDFLAGS+= -L${LOCALBASE}/lib -L../../libbacktrace/obj -L../libbacktrace/ -lexecinfo
 # required to print function names using the compat API
 LDFLAGS+= -Wl,--export-dynamic
 
