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authorPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>2017-04-04 15:25:35 +0200
committerPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>2017-04-17 20:25:55 +0200
commit11b39199bec22d2b07ead87599d9eed975947181 (patch)
tree3770c0df29879ff7b7508993068f4916ee9b796f /Makefile
parent84da2720da70399840b62a61e9a9d7baf96b289d (diff)
import: update Makefile for standalone use
The original Makefile was intended to run as part of the ATF build. As we split this off into a standalone project again, we need to change things and update/add rules that are missing when the ATF build infrastructure is not present. This commit makes a standalone Makefile from what we found within the ATF repository.
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile86
1 files changed, 35 insertions, 51 deletions
diff --git a/Makefile b/Makefile
index b2dac4a..dcaa7ac 100644
--- a/Makefile
+++ b/Makefile
@@ -29,14 +29,18 @@
#
# Cross Compile
-M0_CROSS_COMPILE ?= arm-none-eabi-
+#
+# For a default cross-compile we use the naming convention from crosstools-ng
+# as this toolchain can be easily and quickly regenerated from source.
+CROSS_COMPILE ?= arm-cortex_m0-eabi-
# Build architecture
-ARCH := cortex-m0
+ARCH := cortex-m0
# Build platform
-PLAT_M0 ?= rk3399m0
+PLAT_M0 ?= rk3399m0
+V ?= 0
ifeq (${V},0)
Q=@
else
@@ -47,7 +51,7 @@ export Q
.SUFFIXES:
INCLUDES += -Iinclude/ \
- -I../../include/shared/
+ -Iinclude/shared/
# NOTE: Add C source files here
C_SOURCES := src/startup.c \
@@ -57,64 +61,40 @@ C_SOURCES := src/startup.c \
src/stopwatch.c
# Flags definition
-COMMON_FLAGS := -g -mcpu=$(ARCH) -mthumb -Wall -O3 -nostdlib -mfloat-abi=soft
+COMMON_FLAGS := -g -mcpu=$(ARCH) -mthumb -Wall -Os -nostdlib -mfloat-abi=soft
CFLAGS := -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-common
ASFLAGS := -Wa,--gdwarf-2
LDFLAGS := -Wl,--gc-sections -Wl,--build-id=none
# Cross tool
-CC := ${M0_CROSS_COMPILE}gcc
-CPP := ${M0_CROSS_COMPILE}cpp
-AR := ${M0_CROSS_COMPILE}ar
-OC := ${M0_CROSS_COMPILE}objcopy
-OD := ${M0_CROSS_COMPILE}objdump
-NM := ${M0_CROSS_COMPILE}nm
-
-# NOTE: The line continuation '\' is required in the next define otherwise we
-# end up with a line-feed characer at the end of the last c filename.
-# Also bare this issue in mind if extending the list of supported filetypes.
-define SOURCES_TO_OBJS
- $(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \
- $(notdir $(patsubst %.S,%.o,$(filter %.S,$(1))))
-endef
-
-SOURCES := $(C_SOURCES)
-OBJS := $(addprefix $(BUILD)/,$(call SOURCES_TO_OBJS,$(SOURCES)))
-LINKERFILE := $(BUILD)/$(PLAT_M0).ld
-MAPFILE := $(BUILD)/$(PLAT_M0).map
-ELF := $(BUILD)/$(PLAT_M0).elf
-BIN := $(BUILD)/$(PLAT_M0).bin
-LINKERFILE_SRC := src/$(PLAT_M0).ld.S
-
-# Function definition related compilation
-define MAKE_C
-$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2))))
--include $(patsubst %.o,%.d,$(OBJ))
+CC := ${CROSS_COMPILE}gcc
+CPP := ${CROSS_COMPILE}cpp
+AR := ${CROSS_COMPILE}ar
+OC := ${CROSS_COMPILE}objcopy
+OD := ${CROSS_COMPILE}objdump
+NM := ${CROSS_COMPILE}nm
-$(OBJ) : $(2)
- @echo " CC $$<"
- $$(Q)$$(CC) $$(COMMON_FLAGS) $$(CFLAGS) $$(INCLUDES) -MMD -MT $$@ -c $$< -o $$@
+define SOURCES_TO_OBJS
+ $(patsubst %.c,%.o,$(filter %.c,$(1))) \
+ $(patsubst %.S,%.o,$(filter %.S,$(1)))
endef
-define MAKE_S
-$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2))))
-
-$(OBJ) : $(2)
- @echo " AS $$<"
- $$(Q)$$(CC) -x assembler-with-cpp $$(COMMON_FLAGS) $$(ASFLAGS) -c $$< -o $$@
-endef
+CSRC := $(C_SOURCES)
+OBJS := $(CSRC:.c=.o) $(SSRC:.s=.o)
-define MAKE_OBJS
- $(eval C_OBJS := $(filter %.c,$(2)))
- $(eval REMAIN := $(filter-out %.c,$(2)))
- $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3))))
+LINKERFILE := $(PLAT_M0).ld
+MAPFILE := $(PLAT_M0).map
+ELF := $(PLAT_M0).elf
+BIN := $(PLAT_M0).bin
+LINKERFILE_SRC := src/$(PLAT_M0).ld.S
- $(eval S_OBJS := $(filter %.S,$(REMAIN)))
- $(eval REMAIN := $(filter-out %.S,$(REMAIN)))
- $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3))))
+%.o : %.c
+ @echo " CC $<"
+ $(Q)$(CC) $(COMMON_FLAGS) $(CFLAGS) $(INCLUDES) -MMD -MT $@ -c $< -o $@
- $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN)))
-endef
+$.o : %.s
+ @echo " AS $<"
+ $(Q)$(CC) -x assembler-with-cpp $(COMMON_FLAGS) $(ASFLAGS) -c $< -o $@
.DEFAULT_GOAL := $(BIN)
@@ -130,4 +110,8 @@ $(BIN) : $(ELF)
@echo " BIN $@"
$(Q)$(OC) -O binary $< $@
+clean:
+ @echo " CLEAN"
+ $(Q)rm -f $(OBJS) $(ELF) $(BIN) $(LINKERFILE)
+
$(eval $(call MAKE_OBJS,$(BUILD),$(SOURCES),$(1)))