$NetBSD: patch-Makefile,v 1.1 2019/05/04 16:15:25 bacon Exp $

# Add destdir support, install-strip, and respect LDFLAGS

--- Makefile.orig	2019-04-17 03:23:22.000000000 +0000
+++ Makefile
@@ -3,9 +3,11 @@ DIR_SRC := ./src
 DIR_OBJ := ./obj
 
 PREFIX ?= /usr/local
+DESTDIR ?=
 BINDIR ?= $(PREFIX)/bin
 INCLUDE_DIRS ?=
 LIBRARY_DIRS ?=
+STRIP ?= strip
 
 SRC := $(wildcard ${DIR_SRC}/*.cpp)
 OBJ := $(patsubst %.cpp,${DIR_OBJ}/%.o,$(notdir ${SRC}))
@@ -15,13 +17,14 @@ TARGET := fastp
 BIN_TARGET := ${TARGET}
 
 CXX ?= g++
-CXXFLAGS := -std=c++11 -g -O3 -I${DIR_INC} $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir)) ${CXXFLAGS}
-LIBS := -lz -lpthread
-LD_FLAGS := $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) $(LIBS) $(LD_FLAGS)
+CXXFLAGS ?= -g -O3
+CXXFLAGS += -std=c++11 -I${DIR_INC} $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
+LIBS := -lz
+LDFLAGS += $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) $(LIBS)
 
 
 ${BIN_TARGET}:${OBJ}
-	$(CXX) $(OBJ) -o $@ $(LD_FLAGS)
+	$(CXX) $(OBJ) -o $@ $(LDFLAGS)
 
 ${DIR_OBJ}/%.o:${DIR_SRC}/%.cpp make_obj_dir
 	$(CXX) -c $< -o $@ $(CXXFLAGS)
@@ -38,5 +41,9 @@ make_obj_dir:
 	fi
 
 install:
-	install $(TARGET) $(BINDIR)/$(TARGET)
+	install -d $(DESTDIR)$(BINDIR)
+	install $(TARGET) $(DESTDIR)$(BINDIR)/$(TARGET)
 	@echo "Installed."
+
+install-strip: install
+	$(STRIP) $(DESTDIR)$(BINDIR)/$(TARGET)