Makefile
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#
# (C) Copyright 2007 Semihalf
#
# SPDX-License-Identifier: GPL-2.0+
#
ifeq ($(ARCH),powerpc)
LOAD_ADDR = 0x40000
endif
ifeq ($(ARCH),arm)
LOAD_ADDR = 0x1000000
endif
# Resulting ELF and binary exectuables will be named demo and demo.bin
extra-y = demo
# Source files located in the examples/api directory
SOBJ_FILES-y += crt0.o
COBJ_FILES-y += demo.o
COBJ_FILES-y += glue.o
COBJ_FILES-y += libgenwrap.o
# Source files which exist outside the examples/api directory
EXT_COBJ_FILES-y += lib/crc32.o
EXT_COBJ_FILES-y += lib/ctype.o
EXT_COBJ_FILES-y += lib/div64.o
EXT_COBJ_FILES-y += lib/string.o
EXT_COBJ_FILES-y += lib/time.o
EXT_COBJ_FILES-y += lib/vsprintf.o
EXT_SOBJ_FILES-$(CONFIG_PPC) += arch/powerpc/lib/ppcstring.o
# Create a list of object files to be compiled
OBJS += $(addprefix $(obj)/,$(SOBJ_FILES-y))
OBJS += $(addprefix $(obj)/,$(COBJ_FILES-y))
OBJS += $(addprefix $(obj)/,$(notdir $(EXT_COBJ_FILES-y)))
OBJS += $(addprefix $(obj)/,$(notdir $(EXT_SOBJ_FILES-y)))
#########################################################################
$(obj)/demo: $(OBJS)
$(LD) --gc-sections -Ttext $(LOAD_ADDR) -o $@ $^ $(PLATFORM_LIBS)
$(obj)/demo.bin: $(obj)/demo
$(OBJCOPY) -O binary $< $@ 2>/dev/null
# Rule to build generic library C files
$(addprefix $(obj)/,$(notdir $(EXT_COBJ_FILES-y))): $(obj)/%.o: $(SRCTREE)/lib/%.c FORCE
$(call cmd,force_checksrc)
$(call if_changed_rule,cc_o_c)
# Rule to build architecture-specific library assembly files
$(addprefix $(obj)/,$(notdir $(EXT_SOBJ_FILES-y))): $(obj)/%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
$(call if_changed_dep,as_o_S)