$NetBSD: patch-Makefile,v 1.10 2022/06/18 14:23:13 fcambus Exp $

- Do not hard-code -pthread, as it is handled by the pkgsrc infrastructure.
- Do not hard-code -ldl

--- Makefile.orig	2022-06-18 03:29:18.000000000 +0000
+++ Makefile
@@ -42,7 +42,7 @@ MOLD_CXXFLAGS := -std=c++20 -fno-excepti
                  -fno-asynchronous-unwind-tables -Ithird-party/xxhash \
                  -DMOLD_VERSION=\"$(VERSION)\" -DLIBDIR="\"$(LIBDIR)\""
 
-MOLD_LDFLAGS := -pthread -lz -lm -ldl
+MOLD_LDFLAGS := -lz -lm
 
 # Get a hash of the current git head. We don't want to use the git
 # command because the command prints out a warning if running under