SYS ?= $(shell gcc -dumpmachine)
export SYS

GLIBC_SRC = glibc-2.19
SHIM_DIR = shim
BUILD_DIR = build
GLIBC_TARGET = $(addprefix $(BUILD_DIR)/,libc.so.6 ld-linux-x86-64.so.2 libpthread.so.0 libm.so.6 libdl.so.2 libutil.so.1 crt1.o crti.o crtn.o liblibos.so.1)

all: $(GLIBC_TARGET)
	$(MAKE) -C $(SHIM_DIR) all

debug: DEBUG=debug
debug: $(GLIBC_TARGET)
	$(MAKE) -C $(SHIM_DIR) debug

# nothing to install
install:

ifeq ($(SYS),x86_64-linux-gnu)
$(GLIBC_TARGET): $(BUILD_DIR)/Makefile
	cd $(BUILD_DIR) && $(MAKE)

$(BUILD_DIR)/Makefile: $(GLIBC_SRC)/configure
	./buildglibc.py --quiet $(DEBUG)

$(GLIBC_SRC)/configure:
	[ -f $(GLIBC_SRC).tar.gz ] || \
	wget http://ftp.gnu.org/gnu/glibc/$(GLIBC_SRC).tar.gz
	tar -xzf $(GLIBC_SRC).tar.gz
	cd $(GLIBC_SRC) && patch -p1 < ../$(GLIBC_SRC).patch

.PHONY: pack
pack: $(GLIBC_TARGET)
	@../Scripts/pack_binaries.sh glibc $^
	$(MAKE) -C $(SHIM_DIR) pack

clean:
	$(MAKE) -C $(SHIM_DIR) clean
	rm -rf $(BUILD_DIR)
else
$(GLIBC_TARGET): .packed/glibc.tar.gz
	tar -xmozf $< $@

clean:
	rm -rf $(BUILD_DIR)
endif