# This file is part of BigPNG, a File Format plugin for Adobe Photoshop(R)
# Copyright (C) 2010 Toby Thain, toby@telegraphics.com.au

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by  
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License  
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# GNU Makefile
# builds Win32 DLL and CS2/Mac Mach-O plugin bundle

# by Toby Thain <toby@telegraphics.com.au>


# ---------- variables & flags ----------

EXEC = BigPNG

VERSION := $(shell perl -n -e 'm/^.*VERSION_STR[[:blank:]]+\"([^"]*)\"/ && print $$1;' version.h)

MINGW_CC = i386-mingw32msvc-gcc
DLLWRAP  = i386-mingw32msvc-dllwrap
WINDRES  = i386-mingw32msvc-windres


# Note: Only CS2 SDK or later is supported directly for OS X builds.
#       Older SDKs lack the required CodeMachOPowerPC property.
PSAPI = ../adobe_photoshop_cs5_sdk_mac/photoshopapi

ZLIB = ../zlib-1.2.5
LIBPNG = ../libpng-1.4.3

PNGOPTS = -DPNG_USER_WIDTH_MAX=1073741824 \
          -DPNG_USER_HEIGHT_MAX=1073741824

CFLAGS += -Wall -O2
CPPFLAGS += -I$(PSAPI)/pica_sp -I$(PSAPI)/photoshop \
            -I$(LIBPNG) -I../common/adobeplugin -I../common/tt \
            -DWANT_LARGE_FILES $(PNGOPTS)
REZFLAGS = $(ARCH) $(subst -D, -d , $(PNGOPTS))


# ---------- source & object files ----------

# where to find .c source files
vpath %.c ../common/tt ../common/adobeplugin

# list source files

OBJ_COMMON = main.o read.o readpng.o write.o writepng.o file_io.o ui.o str.o

# derive lists of object files, separate for each platform
OBJ_OSX := $(addprefix obj/, $(OBJ_COMMON) \
				ui_mac.o ui_compat_mac.o ui_cocoa.o dbg_mac.o largefiles_forks.o ) \
				$(LIBPNG)/libpng.a $(ZLIB)/libz.a  # must be in this order for link to succeed on 10.4.11
OBJ_W32 := $(addprefix obj_w32/, $(OBJ_COMMON) \
				ui_win.o ui_compat_win.o dbg_win.o file_compat_win.o dllmain.o res.o ) \
				$(LIBPNG)/libpng.a $(ZLIB)/libz.a


# ---------- executables ----------

# constituent files of Mac OS X plugin bundle
# Adobe's plugs use .plugin extension
BUNDLE = $(EXEC).plugin
PLUGIN_OSX  = $(BUNDLE)/Contents/MacOS/$(EXEC)
PLUGIN_RSRC = $(BUNDLE)/Contents/Resources/$(EXEC).rsrc
PLUGIN_PARTS = $(PLUGIN_OSX) $(PLUGIN_RSRC) $(BUNDLE)/Contents/Info.plist $(BUNDLE)/Contents/PkgInfo
DISTDMG = dist/$(EXEC)-$(VERSION).dmg

$(PLUGIN_OSX) : CFLAGS   += $(ARCH)
$(PLUGIN_OSX) : LDFLAGS  += $(ARCH)
$(PLUGIN_OSX) : CPPFLAGS += -DMAC_ENV -Dmacintosh -I/Developer/Headers/FlatCarbon

# Win32 plugin DLL to build
PLUGIN_W32 = $(EXEC).8bi
DISTZIP = dist/$(EXEC)-$(VERSION)-win.zip

$(PLUGIN_W32) : CPPFLAGS += -DWIN_ENV


# ---------- targets ----------

.PHONY : thin cs3 cs5 dll zip dmg clean realclean

# targets for OS X Mach-O (bundle) format runtimes:
# 'thin' - current host architecture (for testing)
# 'cs3' - Universal (PPC & Intel architectures; CS2, CS3 and CS4)
# 'cs5' - 32-bit and 64-bit Intel (CS5)
thin cs3 cs5 : $(PLUGIN_PARTS) 

# See: http://developer.apple.com/documentation/Porting/Conceptual/PortingUnix/compiling/chapter_4_section_3.html#//apple_ref/doc/uid/TP40002850-BAJCFEBA

cs3 : ARCH = -arch ppc -arch i386
cs3 : CFLAGS   += -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4
cs3 : LDFLAGS  += -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4

cs5 : ARCH = -arch i386 -arch x86_64
cs5 : CFLAGS   += -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5
cs5 : LDFLAGS  += -Wl,-syslibroot,/Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5

# build Win32 DLL plugin (requires MinGW)
dll : $(PLUGIN_W32)


$(BUNDLE) :
	mkdir -p $@
	/Developer/Tools/SetFile -a B $@

# insert correct executable name and version string in bundle's Info.plist
$(BUNDLE)/Contents/Info.plist : Info.plist.tmpl $(BUNDLE) version.h
	mkdir -p $(dir $@)
	sed -e s/%VERSION_STR%/$(VERSION)/ -e s/%EXEC%/$(EXEC)/ $< > $@

$(BUNDLE)/Contents/PkgInfo : $(BUNDLE)
	mkdir -p $(dir $@)
	printf 8BIF8BIM > $@


clean :
	rm -fr $(OBJ_OSX) $(OBJ_W32) $(PLUGIN_W32) $(BUNDLE)

## Important: use 'make realclean' if changing build architectures (e.g. between cs3/cs5).

realclean : clean $(ZLIB)/Makefile $(LIBPNG)/Makefile
	-make -C $(ZLIB) clean
	-make -C $(LIBPNG) clean
	rm -f *.x *.obj obj/* obj_w32/* $(EXEC).lib $(EXEC).exp $(ZLIB)/Makefile $(LIBPNG)/Makefile


zip : $(DISTZIP)

$(DISTZIP) : $(PLUGIN_W32) dist/README.html dist/gpl.html
	T=`mktemp -d`; \
		D=$$T/$(EXEC)-$(VERSION); \
		mkdir $$D; \
		cp $^ $$D; \
		cd $$T; \
		zip -9 -r temp.zip $(EXEC)-$(VERSION); \
		mv temp.zip $(PWD)/$@; \
		rm -fr $$T
	@ ls -l $@

dist/gpl.html : 
	curl http://www.gnu.org/licenses/gpl.html | \
		sed -e 's%</HEAD>%<BASE HREF="http://www.gnu.org/"> </HEAD>%' \
		    -e 's%</head>%<BASE HREF="http://www.gnu.org/"> </HEAD>%' > $@


dmg : $(DISTDMG)

# create an Apple disk image (dmg) archive of the distribution kit
$(DISTDMG) : $(PLUGIN_PARTS) dist/gpl.html version.h
	DIR=`mktemp -d $(EXEC)-XXXX`; \
	cp -Rp dist/gpl.html $(BUNDLE) $$DIR; \
	hdiutil create -srcfolder $$DIR -ov -volname "$(EXEC) $(VERSION)" \
			-imagekey zlib-level=9 -fs HFS+ $@; \
	rm -fr $$DIR
	@ ls -l $@


# ---------- compile rules ----------

obj/%.o     : %.c ; $(CC)       -o $@ -c $< $(CFLAGS) $(CPPFLAGS)
obj/%.o     : %.m ; $(CC)       -o $@ -c $< $(CFLAGS) $(CPPFLAGS)
obj_w32/%.o : %.c ; $(MINGW_CC) -o $@ -c $< $(CFLAGS) $(CPPFLAGS)

# note dependencies on version.h:

obj_w32/res.o : plugin.rc PiPL.rc ui_win.rc version.h
	$(WINDRES) -i $< -o $@ $(CPPFLAGS)

obj_w32/ui_win.o : version.h

# compile Mac resources (into data fork of .rsrc file)
$(PLUGIN_RSRC) : $(BUNDLE) PiPL_macho.r ui_mac.r PiPL_common.r version.h
	mkdir -p $(dir $@)
	/Developer/Tools/Rez -o $@ -useDF PiPL_macho.r ui_mac.r \
		$(REZFLAGS) \
		-i /Developer/Headers/FlatCarbon \
		-i $(PSAPI)/Resources \
		-i $(PSAPI)/Photoshop
	ls -l $@


# ---------- build zlib  ----------

$(ZLIB)/libz.a : $(ZLIB)/Makefile
	make -C $(ZLIB) libz.a

$(ZLIB)/Makefile : $(ZLIB)/configure
	cd $(ZLIB) && CFLAGS="$(CFLAGS) -DNO_GZIP" ./configure --static


# ---------- build libpng  ----------

$(LIBPNG)/libpng.a : $(LIBPNG)/Makefile
	CPPFLAGS="-DPNG_NO_STDIO -DPNG_NO_MNG_FEATURES \
			  -DPNG_NO_PROGRESSIVE_READ $(PNGOPTS)" \
		make -C $(LIBPNG) libpng.a

$(LIBPNG)/Makefile : $(LIBPNG)/scripts/makefile.darwin
	sed -e 's%\.\./zlib%$(ZLIB)%' -e 's%^CC=.*%CC += $(CFLAGS) $$(CPPFLAGS)%' $< > $@
	

# ---------- link rules ----------

$(PLUGIN_OSX) : $(BUNDLE) exports.exp $(OBJ_OSX)
	mkdir -p $(dir $@)
	$(CC) -bundle -o $@ $(OBJ_OSX) $(LDFLAGS) \
		-exported_symbols_list exports.exp \
		-framework Carbon -framework System -framework AppKit
	ls -l $@
	file $@

# link Win32 DLL
$(PLUGIN_W32) : exports.def $(OBJ_W32)
	$(DLLWRAP) -o $@ -def $^ -mwindows -s
	ls -l $@


# --------------------