# simple pthread Makefile.gcc6 - for Bebbo's gcc-6

HEADERS =
SOURCES =

PREFIX ?= /opt/amiga

CC = m68k-amigaos-gcc
AR = m68k-amigaos-ar
AS = m68k-amigaos-as

uname := $(shell uname)
root ?= $(shell echo $$PWD)
export root

MAKEFILES=$(root)/Makefile.gcc6

# special path handling for msys2 started from Eclipse
ifneq (,$(findstring MSYS_NT,$(uname)))
ifneq (,$(findstring /cygdrive/,$(root)))
troot := $(root)
tdrive := $(word 2,$(subst /, ,$(troot)))
root = $(subst /cygdrive/$(tdrive)/,$(tdrive):/,$(troot))
endif
endif

ifneq (,$(lib))
ifeq (,$(libname))
libname=$(lib)
endif
endif

# extend CFLAGS on first invokation
ifeq (,$(kind))
CFLAGS ?= -Os -fomit-frame-pointer
CFLAGS += -noixemul -I$(root)
endif

.PHONY: all one clean install install_one

.PHONY: lib libb libm020 libm020bb libm020bb32
all: info lib libb libm020 libm020bb libm020bb32

# the desired kinds to be build
lib:
	@mkdir -p $@
	$(MAKE) one kind=$@
		
libb:
	@mkdir -p $@
	$(MAKE) one kind=$@ flags="-fbaserel  -save-temps"

libm020:
	@mkdir -p $@
	$(MAKE) one kind=$@ flags="-m68020"

libm020bb:
	@mkdir -p $@
	$(MAKE) one kind=$@ flags="-fbaserel -m68020"

libm020bb32:
	@mkdir -p $@
	$(MAKE) one kind=$@ flags="-fbaserel32 -m68020"

# the libs to build for each kind
one: pthread

# install all kinds into the prefix
.PHONY: install_lib install_libb install_libm020 install_libm020bb install_libm020bb32
install: install_lib install_libb install_libm020 install_libm020bb install_libm020bb32
	
install_lib:
	$(MAKE) install_one kind=lib to=""
install_libb:
	$(MAKE) install_one kind=libb to="libb/"
install_libm020:
	$(MAKE) install_one kind=libm020 to="libm020/"
install_libm020bb:
	$(MAKE) install_one kind=libm020bb to="libb/libm020/"
install_libm020bb32:
	$(MAKE) install_one kind=libm020bb32 to="libb32/libm020/"

# install the files for the given $(kind) into $(to)
install_one:
	mkdir -p $(PREFIX)/m68k-amigaos/lib/$(to)
	cp $(kind)/*.a $(PREFIX)/m68k-amigaos/lib/$(to)
	cp $(kind)/*.o $(PREFIX)/m68k-amigaos/lib/$(to)
	

# startup stuff
.PHONY: libdir
libdir:
	@mkdir -p lib

lib/devinit.o: $(root)/$(SOURCES)/startup/devinit.c libdir
	$(CC) -c $(CFLAGS) $(flags) $< -o $@

lib/libinit.o: $(root)/$(SOURCES)/startup/libinit.c libdir
	$(CC) -c $(CFLAGS) $(flags) $< -o $@

lib/libinitr.o: $(root)/$(SOURCES)/startup/libinitr.c libdir
	$(CC) -c $(CFLAGS) $(flags) $< -o $@

lib/ncrt0.o: $(root)/$(SOURCES)/startup/ncrt0.S libdir
	$(AS) $< -o $@

lib/nbcrt0.o: $(root)/$(SOURCES)/startup/nbcrt0.S libdir
	$(AS) $< -o $@

lib/nlbcrt0.o: $(root)/$(SOURCES)/startup/nlbcrt0.S libdir
	$(AS) $< -o $@

lib/nrcrt0.o: $(root)/$(SOURCES)/startup/nrcrt0.S libdir
	$(AS) $< -o $@

lib/nlrcrt0.o: $(root)/$(SOURCES)/startup/nlrcrt0.S libdir
	$(AS) $< -o $@

.PHONY: pthread
pthread:
	$(MAKE) -C $(kind) libpthread.a lib=pthread

# build the lib base on $(lib), $(kind) and $(flags)
lib$(libname).a: $(shell find $(root)/$(SOURCES)/* -name '*.c') $(stolen) $(shell find $(root)/$(HEADERS)/* -name '*.h') $(root)/Makefile.gcc6
	@mkdir -p $(lib)
	@echo compiling for $(kind)/$@ using $(CC) -c $(CFLAGS) $(flags)
	@touch -t 0001010000 $(lib)/stamp && if [ -e $@ ]; then touch -r $@ $(lib)/stamp; fi
	@if [ "$$(find $(root)/$(HEADERS)/* -newer $(lib)/stamp)" != "" ]; then rm -f $(lib)/*.o $@; touch -t 0001010000 $(lib)/stamp; fi
	@if [ "$$(find $(root)/Makefile.gcc6 -newer $(lib)/stamp)" != "" ]; then rm -f $(lib)/*.o $@; touch -t 0001010000 $(lib)/stamp; fi
	@cd $(lib) && files="$$(find $^ -name '*.c' -newer stamp)" && echo "$(CC) -c $(CFLAGS) $(flags) $$files" && $(CC) -c $(CFLAGS) $(flags) $$files 
	@#echo archive $(kind)/$@
	@$(AR) rcs $@ $$(find ./$(lib)/* -name '*.o' -newer $(lib)/stamp)


# cleanup
clean:
	find * -name '*.o' -delete
	find * -name '*.a' -delete
	find * -name stamp -delete

info:
	@echo "$(uname)"
	@echo "root=$(root)"