+
+#### TOOLCHAIN CONFIGURATION ####
+
CROSS_COMPILE?=arm-elf-
+
CC=gcc
LD=ld
+AR=ar
SIZE=size
OBJCOPY=objcopy
CFLAGS += -Wall -Wextra -Wcast-align -Wimplicit -Wunused
CFLAGS += -Wswitch -Wredundant-decls -Wreturn-type -Wshadow -Wnested-externs
CFLAGS += -Wbad-function-cast -Wsign-compare -Waggregate-return
-CFLAGS += -Wa,-adhlns=$(subst $(suffix $<),.lst,$<)
CFLAGS += -Os -ffunction-sections
CFLAGS += -g$(DEBUGF)
-ASFLAGS=-Wa,-adhlns=$(<:.S=.lst),--g$(DEBUGF) $(INCLUDES) -D__ASSEMBLY__
+# some older toolchains don't support this, ignore it for now
+#ASFLAGS=--g$(DEBUGF) $(INCLUDES) -D__ASSEMBLY__
+ASFLAGS=$(INCLUDES) -D__ASSEMBLY__
+
+LDFLAGS = -nostartfiles -nostdlib -nodefaultlibs --gc-sections --cref
+
+#### GIT VERSION ####
+
+GIT_COMMIT:=$(shell git describe --always)
+GIT_MODIFIED:=$(shell (git status | grep "modified:\|added:\|deleted:" -q) && echo "-modified")
+
+GIT_REVISION:=$(GIT_COMMIT)$(GIT_MODIFIED)
+
+ASFLAGS += -DGIT_REVISION=\"$(GIT_REVISION)\"
+CFLAGS += -DGIT_REVISION=\"$(GIT_REVISION)\"
+
+#### GLOBAL DATA ####
+
+ALL_OBJS=
+
+ALL_LSTS=$(ALL_OBJS:.o=.lst)
+ALL_DEPS=$(ALL_OBJS:.o=.p)
+
+#### APPLICATION DATA ####
+
+ALL_APPS=
+
+ALL_APP_TARGETS=$(ALL_APPS:.elf=.bin) $(ALL_APPS:.elf=.size) $(ALL_APPS) $(ALL_APPS:.elf=.map)
+
+#### LIBRARY DATA ####
+
+ALL_LIBS=
+
+ALL_LIB_TARGETS=$(ALL_LIBS)
+
+
+#### DEFAULT RULE ####
+
+.PHONY: default
+default: all
+
+
+#### APPLICATION RULES ####
+
+# template for application rules
+define APPLICATION_BOARD_ENVIRONMENT_template
+
+# define set of objects for this binary
+$(1)_$(2)_$(3)_OBJS := apps/$(1)/main.o $(ANY_APP_OBJS) $$($(2)_OBJS)
+$(1)_$(2)_$(3)_LIBS := $(ANY_APP_LIBS)
+
+# define manifest compilation
+board/$(2)/$(1).$(3).manifest.o: board/manifest.c
+ $(CROSS_COMPILE)$(CC) $(CFLAGS) -DAPPLICATION=\"$(1)\" -DBOARD=\"$(2)\" -DENVIRONMENT=\"$(3)\" -c -o $$@ $$<
+
+# generate dummy dependencies for manifest
+board/$(2)/$(1).$(3).manifest.p: board/manifest.c
+ @touch board/$(2)/$(1).$(3).manifest.p
+
+# add manifest object to object list
+$(1)_$(2)_$(3)_OBJS+=board/$(2)/$(1).$(3).manifest.o $$($(3)_OBJS)
+
+# define compilation rule, also generates map file
+board/$(2)/$(1).$(3).elf board/$(2)/$(1).$(3).map: $$($(1)_$(2)_$(3)_OBJS) $$($(1)_$(2)_$(3)_LIBS) $$($(3)_LDS)
+ $(CROSS_COMPILE)$(LD) $(LDFLAGS) -T $$($(3)_LDS) -Bstatic \
+ -Map board/$(2)/$(1).$(3).map -o board/$(2)/$(1).$(3).elf \
+ --start-group $$($(1)_$(2)_$(3)_OBJS) $$($(1)_$(2)_$(3)_LIBS) --end-group
+
+# define size rule
+board/$(2)/$(1).$(3).size: board/$(2)/$(1).$(3).elf
+ $(CROSS_COMPILE)$(SIZE) board/$(2)/$(1).$(3).elf | tee board/$(2)/$(1).$(3).size
+
+ALL_APPS+=board/$(2)/$(1).$(3).elf
+ALL_OBJS+=board/$(2)/$(1).$(3).manifest.o
+
+endef
+
+define BOARD_template
+ALL_OBJS+=$$($(1)_OBJS)
+endef
+
+define BOARD_ENVIRONMENT_template
+ALL_OBJS+=$$($(1)_OBJS)
+endef
+
+define APPLICATION_template
+$(1)_SRCS_REL=$$(patsubst %,$$($(1)_DIR)/%,$$($(1)_SRCS))
+$(1)_OBJS:=$$($(1)_SRCS_REL:.c=.o)
+$(1)_OBJS:=$$($(1)_OBJS:.S=.o)
+
+ALL_OBJS+=$$($(1)_OBJS) apps/$(1)/main.o
+endef
+
+# define rules for all defined applications
+$(foreach app,$(APPLICATIONS), \
+ $(foreach brd,$(BOARDS), \
+ $(foreach env,$($(brd)_ENVIRONMENTS), \
+ $(eval $(call APPLICATION_BOARD_ENVIRONMENT_template,$(app),$(brd),$(env))))))
+
+$(foreach brd,$(BOARDS), \
+ $(eval $(call BOARD_template,$(brd)) \
+ $(foreach env,$($(brd)_ENVIRONMENTS), \
+ $(eval $(call BOARD_ENVIRONMENT_template,$(env))))))
+
+$(foreach app,$(APPLICATIONS), \
+ $(eval $(call APPLICATION_template,$(app))))
+
+
+# add common things to global lists
+ALL_OBJS+=$(ANY_APP_OBJS)
+
+#### LIBRARY RULES ####
+
+# template for library rules
+define LIBRARY_template
+
+$(1)_SRCS_REL=$$(patsubst %,$$($(1)_DIR)/%,$$($(1)_SRCS))
+$(1)_OBJS:=$$($(1)_SRCS_REL:.c=.o)
+$(1)_OBJS:=$$($(1)_OBJS:.S=.o)
+
+$$($(1)_DIR)/lib$(1).a: $$($(1)_OBJS)
+ $(CROSS_COMPILE)$(AR) cru $$($(1)_DIR)/lib$(1).a $$($(1)_OBJS)
+
+ALL_LIBS+=$$($(1)_DIR)/lib$(1).a
+
+ALL_OBJS+=$$($(1)_OBJS)
+
+endef
+
+# define rules for all defined libraries
+$(foreach lbr,$(LIBRARIES),$(eval $(call LIBRARY_template,$(lbr))))
+
+
+#### TOPLEVEL RULES ####
+
+.PHONY: all
+all: $(ALL_DEPS) $(ALL_APPS:.elf=.bin) $(ALL_APPS:.elf=.size)
+
+.PHONY: depend
+depend: $(ALL_DEPS)
+
+
+#### COMPILATION RULES ####
+
+%.p: %.c
+ @$(CROSS_COMPILE)$(CC) $(CFLAGS) -M -o $(*).d $(<)
+ @sed 's|.*\.o:|$(@:.p=.o): |g' < $*.d > $@; rm -f $*.d; [ -s $@ ] || rm -f $@
+
+%.p: %.S
+ @$(CROSS_COMPILE)$(CC) $(ASFLAGS) -M -o $(*).d $(<)
+ @sed 's|.*\.o:|$(@:.p=.o): |g' < $*.d > $@; rm -f $*.d; [ -s $@ ] || rm -f $@
+
+%.o: %.c
+ $(CROSS_COMPILE)$(CC) $(CFLAGS) -Wa,-adhlns=$(@:.o=.lst) -c -o $@ $<
+
+%.o: %.S
+ $(CROSS_COMPILE)$(CC) $(ASFLAGS) -Wa,-adhlns=$(@:.o=.lst) -c -o $@ $<
+
+
+%.bin: %.elf
+ $(CROSS_COMPILE)objcopy --gap-fill=0xff -O binary $^ $@
+
+
+#### CLEANUP RULES ####
+
+.PHONY: clean
+clean:
+ rm -f $(ALL_APP_TARGETS) $(ALL_LIB_TARGETS) $(ALL_OBJS) $(ALL_DEPS) $(ALL_LSTS)
+
+.PHONY: distclean
+distclean: clean
+ find . -name '*.o' -or -name '*.bin' -or -name '*.map' -or -name '*.lst' -or -name '*.p' -exec rm '{}' ';'
+
+
+#### DEPENDENCY LOAD ####
-LDFLAGS = -nostartfiles -nostdlib -nodefaultlibs --gc-sections #-Wl,-Map=$(TARGET).map,--cref
+-include $(ALL_DEPS)
projects / osmocom-bb.git / blobdiff