--- Makefile.orig	2021-07-23 14:21:36 UTC
+++ Makefile
@@ -1,11 +1,11 @@
-GCLDIR := $(if $(GCLDIR),$(GCLDIR),../gclib)
+GCLDIR := $(if $(GCLDIR),$(GCLDIR),gclib)
 
 SEARCHDIRS := -I. -I${GCLDIR}
 
 SYSTYPE :=     $(shell uname)
 
 CXX   := $(if $(CXX),$(CXX),g++)
-LINKER  := $(if $(LINKER),$(LINKER),g++)
+LINKER  := $(if $(LINKER),$(LINKER),${CXX})
 
 LDFLAGS := $(if $(LDFLAGS),$(LDFLAGS),-g)
 
@@ -15,7 +15,7 @@ BASEFLAGS  := -Wall -Wextra -std=c++11 ${SEARCHDIRS} -
 
 GCCV8 := $(shell expr `${CXX} -dumpversion | cut -f1 -d.` \>= 8)
 ifeq "$(GCCV8)" "1"
- BASEFLAGS += -Wno-class-memaccess
+ # BASEFLAGS += -Wno-class-memaccess
 endif
 
 CXXFLAGS := $(if $(CXXFLAGS),$(BASEFLAGS) $(CXXFLAGS),$(BASEFLAGS))
@@ -33,7 +33,7 @@ else #debug builds
     LDFLAGS += -pg
   else
     #CXXFLAGS += -g -O0 -DNDEBUG
-    CXXFLAGS += -g -O0 -DDEBUG -D_DEBUG -DGDEBUG
+    #CXXFLAGS += -g -O0 -DDEBUG -D_DEBUG -DGDEBUG
   endif
   ifneq (,$(filter %memcheck %memdebug, $(MAKECMDGOALS)))
      #use sanitizer in gcc 4.9+
@@ -79,11 +79,8 @@ OBJS := ${GCLDIR}/GBase.o ${GCLDIR}/GArgs.o ${GCLDIR}/
  
 .PHONY : all
 
-all static release debug memcheck memdebug profile gprof prof: ../gclib gffread
+all static release debug memcheck memdebug profile gprof prof: ${GCLDIR} gffread
 
-../gclib:
-	git clone https://github.com/gpertea/gclib.git ../gclib
-
 $(OBJS) : $(GCLDIR)/GBase.h $(GCLDIR)/gff.h
 gffread.o : gff_utils.h $(GCLDIR)/GBase.h $(GCLDIR)/gff.h
 gff_utils.o : gff_utils.h $(GCLDIR)/gff.h
@@ -97,9 +94,19 @@ gffread: $(OBJS) gffread.o
 
 # target for removing all object files
 
-.PHONY : clean
+.PHONY : clean install install-strip
+
 clean:
 	@${RM} gffread gffread.o* gffread.exe $(OBJS)
 	@${RM} core.*
 
+INSTALL	?= install
+STRIP	?= strip
+PREFIX	?= /usr/local
+DESTDIR	?= .
 
+install:
+	${INSTALL} -c gffread ${DESTDIR}${PREFIX}/bin
+
+install-strip: install
+	${STRIP} ${DESTDIR}${PREFIX}/bin/gffread