contiki/cpu/cc2538/Makefile.cc2538
Peter A. Bigot 5fc0575e99 Makefile.include: support make clean all
Historically $(OBJECTDIR) was created when Makefile.include is read.  A
consequence is that combining "clean" with "all" (or any other build
target) results in an error because the clean removes the object
directory that is required to exist when building dependencies.
Creating $(OBJECTDIR) on-demand ensures it is present when needed.

Removed creation of $(OBJECTDIR) on initial read, and added an order-only
dependency forcing its creation all Makefile* rules where the target is
explicitly or implicitly in $(OBJECTDIR).
2013-06-20 17:45:41 -05:00

88 lines
2.7 KiB
Makefile

CC = arm-none-eabi-gcc
CPP = arm-none-eabi-cpp
LD = arm-none-eabi-gcc
AR = arm-none-eabi-ar
OBJCOPY = arm-none-eabi-objcopy
NM = arm-none-eabi-nm
LDSCRIPT = $(OBJECTDIR)/cc2538.ld
CFLAGS += -O2 -mcpu=cortex-m3 -mthumb -mlittle-endian
CFLAGS += -fshort-enums -fomit-frame-pointer -fno-strict-aliasing
CFLAGS += -Wall
LDFLAGS += -mcpu=cortex-m3 -mthumb -nostartfiles
LDFLAGS += -T $(LDSCRIPT)
LDFLAGS += -Wl,-Map=$(@:.elf=-$(TARGET).map),--cref,--no-warn-mismatch
OBJCOPY_FLAGS += -O binary --gap-fill 0xff
### Are we building with code size optimisations?
ifeq ($(SMALL),1)
CFLAGS += -ffunction-sections -fdata-sections
LDFLAGS += -Wl,--gc-sections
endif
### If the user-specified a Node ID, pass a define
ifdef NODEID
CFLAGS += -DIEEE_ADDR_NODE_ID=$(NODEID)
endif
### CPU-dependent cleanup files
CLEAN += symbols.c symbols.h *.d *.elf
### CPU-dependent directories
CONTIKI_CPU_DIRS = . dev usb
### Use the existing debug I/O in cpu/arm/common
CONTIKI_CPU_DIRS += ../arm/common/dbg-io
### Use usb core from cpu/cc253x/usb/common
CONTIKI_CPU_DIRS += ../cc253x/usb/common ../cc253x/usb/common/cdc-acm
### CPU-dependent source files
CONTIKI_CPU_SOURCEFILES += clock.c rtimer-arch.c uart.c watchdog.c
CONTIKI_CPU_SOURCEFILES += nvic.c cpu.c sys-ctrl.c gpio.c ioc.c
CONTIKI_CPU_SOURCEFILES += cc2538-rf.c udma.c lpm.c
CONTIKI_CPU_SOURCEFILES += dbg.c ieee-addr.c
CONTIKI_CPU_SOURCEFILES += slip-arch.c slip.c
DEBUG_IO_SOURCEFILES += dbg-printf.c dbg-snprintf.c dbg-sprintf.c strformat.c
USB_CORE_SOURCEFILES += usb-core.c cdc-acm.c
USB_ARCH_SOURCEFILES += usb-arch.c usb-serial.c cdc-acm-descriptors.c
CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES) $(DEBUG_IO_SOURCEFILES)
CONTIKI_SOURCEFILES += $(USB_CORE_SOURCEFILES) $(USB_ARCH_SOURCEFILES)
### Don't treat the .elf as intermediate
.PRECIOUS: %.elf %.bin
### Always re-build ieee-addr.o in case the command line passes a new NODEID
FORCE:
$(OBJECTDIR)/ieee-addr.o: ieee-addr.c FORCE | $(OBJECTDIR)
$(CC) $(CFLAGS) -c $< -o $@
### Compilation rules
CUSTOM_RULE_LINK=1
%.elf: $(TARGET_STARTFILES) %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a $(LDSCRIPT)
$(LD) $(LDFLAGS) ${filter-out $(LDSCRIPT) %.a,$^} ${filter %.a,$^} -o $@
%.bin: %.elf
$(OBJCOPY) $(OBJCOPY_FLAGS) $< $@
### We don't really need the .bin for the .$(TARGET) but let's make sure it
### gets built
%.$(TARGET): %.elf %.bin
cp $< $@
### This rule is used to generate the correct linker script
LDGENFLAGS += $(addprefix -D,$(subst $(COMMA), ,$(DEFINES)))
LDGENFLAGS += $(addprefix -I,$(SOURCEDIRS))
LDGENFLAGS += -imacros "contiki-conf.h"
LDGENFLAGS += -P -E
# NB: Assumes LDSCRIPT was not overridden and is in $(OBJECTDIR)
$(LDSCRIPT): $(CONTIKI_CPU)/cc2538.lds FORCE | $(OBJECTDIR)
$(CPP) $(LDGENFLAGS) $< -o $@