$NetBSD: patch-Makefile,v 1.1 2019/01/07 02:33:17 bacon Exp $

# Template Makefile requires platform-specific defaults for each OS
# To be sent upstream following commit

--- Makefile.orig	2018-10-22 16:47:31.000000000 +0000
+++ Makefile
@@ -545,6 +545,40 @@ endif
 endif
 
 
+ifeq (${OSTYPE}, NetBSD)
+  CC       ?= gcc
+  CXX      ?= g++
+
+  #  GCC
+  CXXFLAGS  += -pthread -fopenmp -fPIC
+  LDFLAGS   += -pthread -fopenmp -lm -lexecinfo
+
+  #CXXFLAGS  += -Wall -Wextra -Wformat  -Wno-unused   -Wno-parentheses
+  CXXFLAGS  += -Wall -Wextra -Wformat -Wno-unused-function -Wno-unused-parameter -Wno-unused-variable -Wno-char-subscripts -Wno-write-strings -Wno-sign-compare -Wno-format-truncation
+
+  #  Google Performance Tools malloc and heapchecker (HEAPCHECK=normal)
+  #CXXFLAGS  +=
+  #LDFLAGS   += -ltcmalloc
+
+  #  Google Performance Tools cpu profiler (CPUPROFILE=/path)
+  #CXXFLAGS  +=
+  #LDFLAGS   += -lprofiler
+
+  #  callgrind
+  #CXXFLAGS  += -g3 -Wa,--gstabs -save-temps
+
+  ifeq ($(BUILDOPTIMIZED), 1)
+  else
+    CXXFLAGS += -g3
+  endif
+
+  ifeq ($(BUILDDEBUG), 1)
+  else
+    CXXFLAGS += -O3   -finline-functions -fomit-frame-pointer
+  endif
+endif
+
+
 ifneq (,$(findstring CYGWIN, ${OSTYPE}))
   CC        ?= gcc
   CXX       ?= g++