# This sample Makefile allows you to make a OpenGL application
#   whose source is exactly one .c file.
#
#
# To use this Makefile, you must type:
#
#        make xxxx
#
# where xxxx.c or xxxx.cc is the name of the file you wish to compile

# This Makefile works because the default makefile rules include several
# magic variables that are used during processing, like this: 

# $(CC) $(CFLAGS) $(CPPFLAGS)

# Therefore, all we really need to do is define some variables.  This is
# really cool!

# Makefile written by Scott D. Anderson 8/30/2000
# Fall 2004, Modified to use libnetpbm, Fall 2004
# Fall 2005, Modified to substitute libppm for libnetpbm
# Summer 2006, Modified to add Nate Robbins's glm library
# Fall 2006, many modifications to add phony targets, such as targets to build
# demos, tutors and so forth

# Here's where the TW stuff lives. For installation, using PWD is fine,
# since we assume you're in the directory containing this file. (That's
# the assumption in the INSTALL directions.)  If you want to use this
# Makefile from other directories, say via the alias, you'll have to have
# the correct environment variable defined.  You can define TWHOMEDIR in
# your ~/.bash_profile or wherever you like.  

SHELL = /bin/bash

#TWHOME = /home/cs307/public_html/tw
TWHOME = $(shell if [ "x${TWHOMEDIR}x" != "xx" ]; then echo "${TWHOMEDIR}"; else echo "${PWD}"; fi)

NETPBMINSTALLED = $(shell if [ `uname -s` = 'Linux' -o -e '/opt/local/lib/libnetpbm.dylib' ]; then echo "yes" ; else echo 'no'; fi)

# ================================================================
# Some of the following Makefile coding is borrowed from the Lejos software.

# OSTYPE is not set by default on Mac OS X.  Should end up being "darwin"
ifndef OSTYPE
  OSTYPE = $(shell uname -s|awk '{print tolower($$0)}')
  #export OSTYPE
endif

# These magic variables (LOADLIBES and LDLIBS) are used during linking; I
# don't know the distinction, but I'm using the first for my object files
# and the second for libraries.  If you want to omit the glm or
# /f05/objects.o, just define this environment variable outside the
# Makefile (say in your own ~/.bash_profile).

ifndef LOADLIBES
LOADLIBES = $(TWHOME)/lib/tw.o $(TWHOME)/lib/glm.o $(TWHOME)/f05/objects.o $(TWHOME)/f06/objects.o $(TWHOME)/f07/objects.o
#LOADLIBES = $(TWHOME)/lib/tw.o $(TWHOME)/lib/glm.o
#LOADLIBES = $(TWHOME)/lib/tw.o 
endif

# Redhat is using the libppm package, but Fedora has changed to netpbm, so
# if you want the Redhat behavior, you have to define an environment
# variable called PPM with the value ppm.  There seems to be an
# implementation of netpbm for Darwin.  PPM can't be used, because the
# function ppm_allocrow doesn't exist.  There is a pm_allocrow, which might
# be an acceptable substitute, but I just don't care that much.

# This CFLAGS variable is used during compiling C programs, and CXXFLAGS
# for compiling C++ programs.  The -DMAC compiler flag is for the
# conditional compilation of which include files to use.  The -DNETPBM
# comments out code that relies on netpbm for platforms that don't have
# it.  On the Mac, the ppm.h file lives in /opt/local/include

ifeq ($(OSTYPE),linux)
CFLAGS = -g -I/usr/X11R6/include/ -I$(TWHOME)/ -DNETPBM
CXXFLAGS = $(CFLAGS)
LDLIBS = -L/usr/X11R6/lib -lglut  -lGL -lGLU -lXmu -lXi -lX11 -lm -lnetpbm
endif

ifeq ($(OSTYPE),darwin)
ifeq ($(NETPBMINSTALLED),yes)
CFLAGS = -g -I/usr/X11R6/include/ -I$(TWHOME)/ -DNETPBM -I/opt/local/include -DMAC
CXXFLAGS = $(CFLAGS)
LDLIBS = -lm -framework OpenGL -framework cocoa -framework glut -L/opt/local/lib/ -lnetpbm
else
CFLAGS = -g -I/usr/X11R6/include/ -I$(TWHOME)/ -DMAC
CXXFLAGS = $(CFLAGS)
LDLIBS = -lm -framework OpenGL -framework cocoa -framework glut 
endif
endif

# ================================================================================
# Special stuff for the TW stuff

.PHONY: all tw demos tutors demosall demosinfo info demodistrib cleandemos alias 

all:	tw demos tutors f05_demos f06_demos f07_demos

# ================================================================
# making the libraries

TWLIB = lib/tw.o

$(TWLIB):	src/tw.cc src/tw-bounding-box.cc src/tw-camera.cc src/tw-color.cc \
	src/tw-fonts.cc src/tw-geometry.cc src/tw-keyboard.cc src/tw-lighting.cc \
	src/tw-menu.cc src/tw-messages.cc src/tw-mouse.cc src/tw-objects.cc \
	src/tw-textures.cc src/tw-window.cc src/tw-wrappers.cc
	g++ $(CFLAGS) $(CPPFLAGS) -c src/tw.cc -o $(TWLIB)
	chmod a+r $(TWLIB)

GLMLIB = lib/glm.o

$(GLMLIB):	glm/glm.cc
	g++ $(CFLAGS) $(CPPFLAGS) -c glm/glm.cc -o $(GLMLIB)
	chmod a+r $(GLMLIB)

F05_LIB = f05/objects.o

$(F05_LIB):	f05/objects.h f05/objects.cpp
	g++ $(CFLAGS) $(CPPFLAGS) -c f05/objects.cpp -o f05/objects.o
	chmod a+r f05/objects.o

F06_LIB = f06/objects.o

$(F06_LIB):	f06/objects.h f06/objects.cpp
	g++ $(CFLAGS) $(CPPFLAGS) -c f06/objects.cpp -o f06/objects.o
	chmod a+r f06/objects.o

F07_LIB = f07/objects.o

$(F07_LIB):	f07/objects.h f07/objects.cpp
	g++ $(CFLAGS) $(CPPFLAGS) -c f07/objects.cpp -o f07/objects.o
	chmod a+r f07/objects.o

TWBINS = bin/show-object-natural bin/show-object-unitized bin/show-texture bin/tw-which

tw:	$(TWLIB) $(GLMLIB) $(F05_LIB) $(F06_LIB) $(F07_LIB) $(TWBINS) 
	@echo Done making $(TWLIB), $(GLMLIB) $(F05_LIB) $(F06_LIB) $(F07_LIB) and $(TWBINS)

cleantw:
	-rm $(TWLIB) $(GLMLIB) $(F05_LIB) $(F06_LIB) $(F07_LIB) $(TWBINS)

# ================================================================
# making Nate Robbins's tutors

TUTOR_BINS := tutors/shapes tutors/transformation tutors/projection tutors/lightmaterial tutors/lightposition tutors/fog tutors/texture

tutors:	$(TUTOR_BINS)

cleantutors:
	-rm $(TUTOR_BINS)

# ================================================================
# making the demos

# The following variable lists all the directories under "demos"
DEMO_DIRS := $(wildcard demos/*)

# If you just want a few demos directories made, list them like this:

#DEMO_DIRS := demos/early demos/color demos/modeling demos/camera 

# The following variables holds the filenames of all the demo source
# files and the binaries.

DEMO_SRCS := $(foreach dir,$(DEMO_DIRS),$(wildcard $(dir)/*.cc))
DEMO_BINS := $(basename $(DEMO_SRCS))

# I don't know how to cause the demo bins to be remade if one of the
# library files changes, such as tw.o. You'll have to do that by hand, by
# saying "make cleandemos" and then "make demos"

demos:	$(DEMO_BINS)

# Use the following target if you want to keep going even if one of the
# compilations fails.  Use the preceding if they should all work.

demosall:
	@echo "Making demo programs"
	#for f in $(DEMO_BINS); do $(MAKE) $$f; done

demoinfo:
	@echo "Demo All Dirs:"
	@echo $(DEMO_ALL_DIRS)
	@echo "Demo Dirs:"
	@echo $(DEMO_DIRS)
	@echo -n "Number of Sources: "
	@echo $(words $(DEMO_SRCS))
	@echo -n "Number of Binaries: "
	@echo $(words $(DEMO_BINS))
	@echo "Counting actual binaries"
	@ls $(DEMO_BINS) 2>/dev/null | wc

cleandemos:
	@-rm -f $(DEMO_BINS)

# ================================================================
# semester object demos

F05_SRCS := $(wildcard f05/*.cc)
F05_BINS := $(basename $(F05_SRCS))

f05_demos:	$(F05_BINS)

clean_f05:
	@-rm -f $(F05_BINS)

# ================================================================
# semester object demos

F06_SRCS := $(wildcard f06/*.cc)
F06_BINS := $(basename $(F06_SRCS))

f06_demos:	$(F06_BINS)

clean_f06:
	@-rm -f $(F06_BINS)

# ================================================================
# semester object demos

F07_SRCS := $(wildcard f07/*.cc)
F07_BINS := $(basename $(F07_SRCS))

f07_demos:	$(F07_BINS)

clean_f07:
	@-rm -f $(F07_BINS)

# ================================================================
# getting ready for a release

# Delete all emacs backup files

expunge:
	find $(TWHOME) -name "*~" -exec rm {} \;

# This target is used on the 

clean:	cleantw cleandemos cleantutors clean_f05 clean_f06 clean_f07

# the release script copies the master directory tree, then does a "make
# clean" on the copy, and finally tars the whole thing up.

release:	expunge
	bin/release $(TWHOME)

# ================================================================
# installation

alias:
	@echo ""
	@echo "	To define an alias, please copy/paste the following lines into your shell."
	@echo "	On Linux and Mac OS X, you can highlight the lines and middle-click"
	@echo "	(probably option+click for a one-button Mac mouse)."
	@echo ""
	@echo export TWHOMEDIR=${PWD}
	@echo export TWLOADPATH=.:${PWD}/textures:${PWD}/objects:${PWD}/f05:${PWD}/f06:${PWD}/f06:${PWD}/f07
	@echo alias 'make-tw="make -f ${PWD}/Makefile"'
	@echo ""

# The "install" target is obsolete.  All I wanted was to define an alias
# automatically, but I don't see how to do it.

install:
	#source bin/install-tw $(TWHOME)


# ================================================================
# debugging

info:
	@echo "TWHOME is $(TWHOME)"
	@echo "OSTYPE is $(OSTYPE)"
	@echo "NETPBMINSTALLED is $(NETPBMINSTALLED)"
	@echo "CFLAGS is $(CFLAGS)"
	@echo "LDLIBS is $(LDLIBS)"
	@echo "LOADLLIBES is $(LOADLIBES)"
	@echo "PPM is $(PPM)"
	@echo "LDLIBS is $(LDLIBS)"
	@echo "DEMO_ALL_DIRS is $(DEMO_ALL_DIRS)"
	@echo "DEMO_DIRS is $(DEMO_DIRS)"
	@echo "F05_BINS is $(F05_BINS)"
	@echo "F06_BINS is $(F06_BINS)"
	@echo "F07_BINS is $(F07_BINS)"