From e9025a189f595ed89dfc535599e0d12cfb03d158 Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Mon, 5 Apr 2021 15:15:33 -0700
Subject: [PATCH] makefile: Explicitly add /lib and /usr/lib to the library
 search path

Some compiler & linkers on some platforms don't dynamically provide
a way to determine the library search path, so if /lib and /usr/lib exist
as directories they are added to the end of the library search path.

As reported in #1026
---
 makefile | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/makefile b/makefile
index 96a02b3c..a29dc0d8 100644
--- a/makefile
+++ b/makefile
@@ -477,6 +477,16 @@ ifeq (${WIN32},)  #*nix Environments (&& cygwin)
         endif
       endif
     endif
+    ifeq (,$(filter /lib/,$(LIBPATH)))
+      ifeq (existlib,$(shell if $(TEST) -d /lib/; then echo existlib; fi))
+        LIBPATH += /lib/
+      endif
+    endif
+    ifeq (,$(filter /usr/lib/,$(LIBPATH)))
+      ifeq (existusrlib,$(shell if $(TEST) -d /usr/lib/; then echo existusrlib; fi))
+        LIBPATH += /usr/lib/
+      endif
+    endif
     # Some gcc versions don't support LTO, so only use LTO when the compiler is known to support it
     ifeq (,$(NO_LTO))
       ifneq (,$(GCC_VERSION))