#===============-=================================================
# NetHack 3.7  include/cross-pre $NHDT-Date: 1597332785 2020/08/13 15:33:05 $  $NHDT-Branch: NetHack-3.7 $
#
# Cross-compiling -PRE section
#

ifdef CROSS_TO_MSDOS
CROSS=1
BUILD_TARGET_LUA=1
BUILD_PDCURSES=1
CROSS_SHARED=1
override TARGET = msdos
override TARGETDIR=../targets/$(TARGET)
override TARGETPFX = $(TARGETDIR)/
override TARGET_LIBS=
endif

ifdef CROSS_TO_WASM
CROSS=1
BUILD_TARGET_LUA=1
HACKDIR=/
PREFIX=
override TARGET = wasm
override TARGETDIR=../targets/$(TARGET)
override TARGETPFX = $(TARGETDIR)/
override TARGET_LIBS=
endif

ifdef CROSS
override PREGAME=
override BUILDMORE=
override CLEANMORE=
override PACKAGE=
endif

ifdef BUILD_TARGET_LUA
#===============-=================================================
# LUA library
# Source from http://www.lua.org/ftp/lua-5.4.4.tar.gz
#=================================================================
LUA_VERSION ?=5.4.4
LUATOP ?= ../lib/lua-$(LUA_VERSION)
LUASRCDIR ?= $(LUATOP)/src
LUAOBJFILES1 =  $(TARGETPFX)lapi.o $(TARGETPFX)lauxlib.o \
		$(TARGETPFX)lbaselib.o $(TARGETPFX)lcode.o \
		$(TARGETPFX)lcorolib.o $(TARGETPFX)lctype.o \
		$(TARGETPFX)ldblib.o
ifeq "$(LUA_VERSION)" "5.3.5"
LUAOBJFILES1 += $(TARGETPFX)lbitlib.o
endif
LUAOBJFILES2 =  $(TARGETPFX)ldebug.o $(TARGETPFX)ldo.o $(TARGETPFX)ldump.o \
		$(TARGETPFX)lfunc.o $(TARGETPFX)lgc.o $(TARGETPFX)linit.o \
		$(TARGETPFX)liolib.o $(TARGETPFX)llex.o
LUAOBJFILES3 =  $(TARGETPFX)lmathlib.o $(TARGETPFX)lmem.o \
		$(TARGETPFX)loadlib.o $(TARGETPFX)lobject.o \
		$(TARGETPFX)lopcodes.o $(TARGETPFX)loslib.o \
		$(TARGETPFX)lparser.o $(TARGETPFX)lstate.o
LUAOBJFILES4 =  $(TARGETPFX)lstring.o $(TARGETPFX)lstrlib.o \
		$(TARGETPFX)ltable.o $(TARGETPFX)ltablib.o \
		$(TARGETPFX)ltm.o $(TARGETPFX)lundump.o \
		$(TARGETPFX)lutf8lib.o $(TARGETPFX)lvm.o $(TARGETPFX)lzio.o
LUALIBOBJS = $(LUAOBJFILES1) $(LUAOBJFILES2) $(LUAOBJFILES3) $(LUAOBJFILES4)
LUACROSSLIB = $(TARGETPFX)lua$(subst .,,$(LUA_VERSION)).a
LUAINCL  = -I$(LUASRCDIR)
override BUILDMORE += $(LUACROSSLIB)
override CLEANMORE += rm -f $(LUACROSSLIB) ;
override TARGET_LIBS += $(LUACROSSLIB) -lm
else
LUAINCL=
endif  # BUILD_TARGET_LUA

ifdef BUILD_PDCURSES
#===============-=================================================
# PD Curses library
#===============-=================================================
ifdef WANT_WIN_CURSES
PDCTOP = ../lib/pdcurses
PDCURSESDEF= -I../lib/pdcurses -I../lib/pdcurses/dos \
		-D"CURSES_GRAPHICS" -D"CURSES_BRIEF_INCLUDE"
PDCLIBOBJ1= $(TARGETPFX)addch.o $(TARGETPFX)addchstr.o \
		$(TARGETPFX)addstr.o $(TARGETPFX)attr.o \
		$(TARGETPFX)beep.o $(TARGETPFX)bkgd.o \
		$(TARGETPFX)border.o $(TARGETPFX)clear.o \
		$(TARGETPFX)color.o $(TARGETPFX)delch.o \
		$(TARGETPFX)deleteln.o $(TARGETPFX)getch.o \
		$(TARGETPFX)getstr.o $(TARGETPFX)getyx.o \
		$(TARGETPFX)inch.o
PDCLIBOBJ2= $(TARGETPFX)inchstr.o $(TARGETPFX)initscr.o \
		$(TARGETPFX)inopts.o $(TARGETPFX)insch.o \
		$(TARGETPFX)insstr.o $(TARGETPFX)instr.o \
		$(TARGETPFX)kernel.o $(TARGETPFX)keyname.o \
		$(TARGETPFX)mouse.o $(TARGETPFX)move.o \
		$(TARGETPFX)outopts.o $(TARGETPFX)overlay.o
PDCLIBOBJ3= $(TARGETPFX)pad.o $(TARGETPFX)panel.o $(TARGETPFX)printw.o \
		$(TARGETPFX)refresh.o $(TARGETPFX)scanw.o \
		$(TARGETPFX)scr_dump.o $(TARGETPFX)scroll.o \
		$(TARGETPFX)slk.o $(TARGETPFX)termattr.o
PDCLIBOBJ4= $(TARGETPFX)touch.o $(TARGETPFX)util.o $(TARGETPFX)window.o \
		$(TARGETPFX)debug.o
PDCLIBOBJS = $(PDCLIBOBJ1) $(PDCLIBOBJ2) $(PDCLIBOBJ3) $(PDCLIBOBJ4)
PDCLIB = $(TARGETPFX)pdclib.a
PDCINCL = -I$(PDCTOP) -I$(PDCTOP)/pdcurses
PDCOBJS = $(TARGETPFX)pdcclip.o $(TARGETPFX)pdcdisp.o \
		$(TARGETPFX)pdcgetsc.o $(TARGETPFX)pdckbd.o \
		$(TARGETPFX)pdcscrn.o $(TARGETPFX)pdcsetsc.o \
		$(TARGETPFX)pdcutil.o
override TARGET_LIBS += $(PDCLIB)
ifdef CROSS_TO_MSDOS
endif
override BUILDMORE += $(PDCLIB)
override CLEANMORE += rm -f $(PDCLIB) ;
else   #WANT_WIN_CURSES
PDCURSESDEF=
PDCLIBOBJS=
PDCOBJS=
PDCLIB=
PDCINCL=
endif  # WANT_WIN_CURSES
endif  # BUILD_PDCURSES

ifdef CROSS_TO_MSDOS
#===============-=================================================
# MSDOS cross-compile recipe
#===============-=================================================
# Uses an MSDOS djgpp cross-compiler on linux or macos.
#
# 1. You can obtain the cross-compiler for your system via:
#     sys/msdos/fetch-cross.sh
# 2. Then
#     make CROSS_TO_MSDOS=1 WANT_WIN_TTY=1 WANT_WIN_CURSES=1 all
#
# Source from http://www.lua.org/ftp/lua-5.4.4.tar.gz
#=================================================================

CFLAGS += -DCROSSCOMPILE

#
# Override the build tools and some obj files to
# reflect the msdos djgpp cross-compiler.
#
TOOLTOP1 = ../lib/djgpp/bin
TOOLTOP2 = ../lib/djgpp/i586-pc-msdosdjgpp/bin
override TARGET_CC = $(TOOLTOP1)/i586-pc-msdosdjgpp-gcc
override TARGET_CXX = $(TOOLTOP2)/g++
override TARGET_AR = $(TOOLTOP1)/i586-pc-msdosdjgpp-gcc-ar
override TARGET_STUBEDIT = ../lib/djgpp/i586-pc-msdosdjgpp/bin/stubedit
MSDOS_TARGET_CFLAGS = -c -O -I../include -I../sys/msdos -I../win/share \
	$(LUAINCL) -DDLB $(PDCURSESDEF) \
	-DUSE_TILES -DCROSSCOMPILE -DCROSSCOMPILE_TARGET -DCROSS_TO_MSDOS \
        -Wall -Wextra -Wno-missing-field-initializers -Wreturn-type -Wunused \
        -Wformat -Wswitch -Wshadow -Wwrite-strings \
	-Wimplicit -Wimplicit-function-declaration -Wimplicit-int \
	-Wmissing-parameter-type -Wold-style-definition -Wstrict-prototypes \
	-DGCC_WARN
PDCINCL += -I$(PDCTOP)/dos
PDC_TARGET_CFLAGS = $(MSDOS_TARGET_CFLAGS) -Wno-unused-parameter \
			-Wno-missing-prototypes
LUA_TARGET_CFLAGS = $(MSDOS_TARGET_CFLAGS)
override TARGET_CFLAGS = $(MSDOS_TARGET_CFLAGS) -Wmissing-declarations \
			-Wmissing-prototypes -pedantic -Wmissing-declarations \
			-Wformat-nonliteral
override TARGET_CXXFLAGS = $(TARGET_CFLAGS)
override TARGET_LINK = $(TOOLTOP1)/i586-pc-msdosdjgpp-gcc
override TARGET_LFLAGS=
override TARGET_LIBS += -lpc
override SYSSRC = ../sys/share/pcmain.c ../sys/msdos/msdos.c \
		../sys/share/pcsys.c ../sys/share/pctty.c \
		../sys/share/pcunix.c ../sys/msdos/video.c \
		../sys/msdos/vidtxt.c ../sys/msdos/pckeys.c \
		../sys/msdos/vidvga.c ../sys/msdos/vidvesa.c \
		../win/share/bmptiles.c ../win/share/giftiles.c \
		../win/share/tileset.c
override SYSOBJ= $(TARGETPFX)pcmain.o $(TARGETPFX)msdos.o \
		$(TARGETPFX)pcsys.o $(TARGETPFX)pctty.o \
		$(TARGETPFX)pcunix.o $(TARGETPFX)video.o \
		$(TARGETPFX)vidtxt.o $(TARGETPFX)pckeys.o \
		$(TARGETPFX)vidvga.o $(TARGETPFX)vidvesa.o \
		$(TARGETPFX)bmptiles.o $(TARGETPFX)giftiles.o \
		$(TARGETPFX)tileset.o $(TARGETPFX)tile.o
override WINLIB=
override LUALIB=
override LUALIBS=
override TOPLUALIB=
override GAMEBIN = $(TARGETPFX)nethack.exe
override PACKAGE = dospkg
override PREGAME += mkdir -p $(TARGETDIR) ;
override CLEANMORE += rm -f -r $(TARGETDIR) ;
VARDATND += nhtiles.bmp
#
ifdef WANT_WIN_CURSES
# rules for pdcurses dos-specific files
$(TARGETPFX)%.o : $(PDCTOP)/dos/%.c
	$(TARGET_CC) $(PDCINCL) $(PDC_TARGET_CFLAGS) -o$@  $<
endif  # WANT_WIN_CURSES
#
# Rule for files in sys/msdos
$(TARGETPFX)%.o : ../sys/msdos/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -o$@ $<
endif  # CROSS_TO_MSDOS
#=================================================================


ifdef CROSS_TO_WASM
#===============-=================================================
# WASM
# originally from https://github.com/NetHack/NetHack/pull/385
#===============-=================================================
#
WASM_DEBUG = 1
WASM_DATA_DIR = $(TARGETPFX)wasm-data
WASM_TARGET = $(TARGETPFX)nethack.js
EMCC_LFLAGS =
#EMCC_LFLAGS += -s SINGLE_FILE=1
EMCC_LFLAGS += -DHACKDIR=\"$(HACKDIR)\"
EMCC_LFLAGS += -s WASM=1
EMCC_LFLAGS += -s ALLOW_TABLE_GROWTH
EMCC_LFLAGS += -s ASYNCIFY -s ASYNCIFY_IMPORTS='["local_callback"]'
EMCC_LFLAGS += -O3
EMCC_LFLAGS += -s MODULARIZE
EMCC_LFLAGS += -s EXPORTED_FUNCTIONS='["_main", "_shim_graphics_set_callback", "_display_inventory"]'
EMCC_LFLAGS += -s EXPORTED_RUNTIME_METHODS='["cwrap", "ccall", "addFunction", \
			"removeFunction", "UTF8ToString", "getValue", "setValue"]'
EMCC_LFLAGS += -s ERROR_ON_UNDEFINED_SYMBOLS=0
# XXX: the "@/" at the end of "--embed-file" tells emscripten to embed the files
# in the root directory, otherwise they will end up in the $(WASM_DATA_DIR) path
EMCC_LFLAGS += --embed-file $(WASM_DATA_DIR)@/
# For a list of EMCC settings:
# https://github.com/emscripten-core/emscripten/blob/master/src/settings.js
#
# WASM C flags
EMCC_CFLAGS =
EMCC_CFLAGS += -Wall
EMCC_CFLAGS += -Werror
EMCC_CFLAGS += -DNO_SIGNAL
#EMCC_CFLAGS += -s DISABLE_EXCEPTION_CATCHING=0
EMCC_DEBUG_LFLAGS += -s ASSERTIONS=1
EMCC_DEBUG_LFLAGS += -s ASSERTIONS=2
EMCC_DEBUG_LFLAGS += -s STACK_OVERFLOW_CHECK=2
EMCC_DEBUG_LFLAGS += -s SAFE_HEAP=1
EMCC_DEBUG_LFLAGS += -s LLD_REPORT_UNDEFINED=1
EMCC_DEBUG_LFLAGS += -s EXCEPTION_DEBUG=1
#EMCC_DEBUG_CFLAGS += -fsanitize=undefined -fsanitize=address -fsanitize=leak
EMCC_DEBUG_LFLAGS += -s NO_EXIT_RUNTIME
# XXX: if --profiling isn't included then any error dumps 10MB of WASM to the screen rather than a useful message
EMCC_DEBUG_LFLAGS += --profiling
EMCC_PROD_CFLAGS += -O3
ifdef WASM_DEBUG
EMCC_CFLAGS += $(EMCC_DEBUG_CFLAGS)
EMCC_LFLAGS += $(EMCC_DEBUG_LFLAGS)
else
EMCC_CFLAGS += $(EMCC_PROD_CFLAGS)
EMCC_LFLAGS += $(EMCC_PROD_LFLAGS)
endif
#
# Override the build tools and some obj files to
# reflect emscripten
override TARGET_CC = emcc
override TARGET_CXX = emcc
override TARGET_AR = emar
WASM_CFLAGS = -Wall -Wextra -Wno-missing-field-initializers
WASM_CFLAGS += -Wimplicit -Wreturn-type -Wunused -Wformat -Wswitch
WASM_CFLAGS += -Wshadow
# WASM_CFLAGS += -Wwrite-strings
# WASM_CFLAGS += -Werror
# Nethack C flags
WASM_CFLAGS += $(WINCFLAGS)   #WINCFLAGS set from multiw-2.370
WASM_CFLAGS += -DSYSCF -DSYSCF_FILE=\"/sysconf\" -DSECURE
WASM_CFLAGS += -g -I../include -DNOTPARMDECL
WASM_CFLAGS += -DGCC_WARN
# NetHack sources control
WASM_CFLAGS += -DDLB
WASM_CFLAGS += -DHACKDIR=\"$(HACKDIR)\"
WASM_CFLAGS += -DDEFAULT_WINDOW_SYS=\"shim\" \
#override TARGET_CFLAGS += -DGREPPATH=\"/usr/bin/grep\"
WASM_CFLAGS += -DNOMAIL
WASM_CFLAGS += $(LUAINCL)
WASM_CFLAGS += -DNOTTYGRAPHICS -DSHIM_GRAPHICS -DLIBNH
WASM_CFLAGS += -DCROSSCOMPILE
WASM_TARGET_CFLAGS = -DCROSSCOMPILE_TARGET -DCROSS_TO_WASM
# For src Makefile
override CFLAGS = $(WASM_CFLAGS)
override TARGET_CFLAGS = $(EMCC_CFLAGS) $(WASM_CFLAGS) $(WASM_TARGET_CFLAGS)
#
LUA_TARGET_CFLAGS = $(TARGET_CFLAGS)
override TARGET_CXXFLAGS = $(TARGET_CFLAGS)
override TARGET_LINK = $(TARGET_CC)
override TARGET_LFLAGS= $(EMCC_LFLAGS)
override SYSSRC = ../sys/libnh/libnhmain.c \
		../sys/share/ioctl.c ../sys/share/unixtty.c \
		../sys/unix/unixunix.c ../sys/unix/unixres.c \
		../win/shim/winshim.c
override SYSOBJ= $(TARGETPFX)libnhmain.o \
		$(TARGETPFX)ioctl.o $(TARGETPFX)unixtty.o \
		$(TARGETPFX)unixunix.o $(TARGETPFX)unixres.o \
		$(TARGETPFX)winshim.o
override WINLIB = emranlib
override LUALIB=
override TOPLUALIB=
override REGEXOBJ = $(TARGETPFX)posixregex.o
override WINOBJ=
# don't bother Making regular NetHack executable
override GAME=
# the real VARDAT hasn't been defined yet for use in ALLDEP override
WASM_DAT = bogusmon data engrave epitaph oracles options quest.lua rumors
WASMDEP = include/nhlua.h $(WASM_DAT) spec_levs check-dlb
override ALLDEP = $(WASMDEP) wasm
override PREGAME += mkdir -p $(TARGETDIR)/wasm-data ;
override CLEANMORE += rm -rf $(TARGETDIR) ;
RANLIB=$(EMRANLIB)
#VARDATND += nhtiles.bmp
# Rule for file in sys/unix
$(TARGETPFX)%.o : ../sys/unix/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -c -o$@ $<
# Rule for file in sys/libnh
$(TARGETPFX)%.o : ../sys/libnh/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -c -o$@ $<
# Rule for files in win/shim
$(TARGETPFX)%.o : ../win/shim/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -c -o$@ $<
endif  # CROSS_TO_WASM
#=================================================================

ifdef WANT_WIN_CURSES
ifdef BUILD_PDCURSES
# Rules for PDCurses files
$(TARGETPFX)%.o : $(PDCTOP)/pdcurses/%.c
	$(TARGET_CC) $(PDCINCL) $(PDC_TARGET_CFLAGS) -c -o$@  $<
endif  # BUILD_PDCURSES
endif  # WANT_WIN_CURSES

ifdef CROSS_SHARED
# Rules for win/share files
$(TARGETPFX)%.o : ../win/share/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -c -o$@ $<
# Rules for util files heading for target
$(TARGETPFX)%.o : ../util/%.c
	$(TARGET_CC) $(TARGET_CFLAGS) -c -o$@ $<
endif  # CROSS_SHARED

ifdef BUILD_TARGET_LUA
# Rule for LUA files
$(TARGETPFX)%.o : $(LUATOP)/src/%.c
	$(TARGET_CC) $(LUA_TARGET_CFLAGS) -c $(LUA_FLAGS) -o$@ $<
endif  # BUILD_TARGET_LUA
#
# End of cross-compiling -PRE section
#===============-=================================================