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make: enable DEVICE _or_ LDSCRIPT to be specified

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First step towards migrating towards generated devices.
This commit is contained in:
Karl Palsson
2016-04-17 00:12:10 +00:00
parent 52b12d5259
commit de0d4af890
1 changed files with 27 additions and 7 deletions
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34
examples/Makefile.rules
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@@ -48,8 +48,6 @@ OPT := -Os
############################################################################### ###############################################################################
# Source files # Source files
LDSCRIPT ?= $(BINARY).ld
OBJS += $(BINARY).o OBJS += $(BINARY).o
@@ -72,8 +70,27 @@ ifeq ($(V),1)
$(info Using $(OPENCM3_DIR) path to library) $(info Using $(OPENCM3_DIR) path to library)
endif endif
INCLUDE_DIR = $(OPENCM3_DIR)/include define ERR_DEVICE_LDSCRIPT_CONFLICT
LIB_DIR = $(OPENCM3_DIR)/lib You can either specify DEVICE=blah, and have the LDSCRIPT generated,
or you can provide LDSCRIPT, and ensure CPPFLAGS, LDFLAGS and LDLIBS
all contain the correct values for the target you wish to use.
You cannot provide both!
endef
ifeq ($(strip $(DEVICE)),)
# Old style, assume LDSCRIPT exists
DEFS += -I$(OPENCM3_DIR)/include
LDFLAGS += -L$(OPENCM3_DIR)/lib
LDLIBS += -l$(LIBNAME)
LDSCRIPT ?= $(BINARY).ld
else
# New style, assume device is provided, and we're generating the rest.
ifneq ($(strip $(LDSCRIPT)),)
$(error $(ERR_DEVICE_LDSCRIPT_CONFLICT))
endif
include $(OPENCM3_DIR)/mk/genlink-config.mk
endif
SCRIPT_DIR = $(OPENCM3_DIR)/scripts SCRIPT_DIR = $(OPENCM3_DIR)/scripts
############################################################################### ###############################################################################
@@ -98,13 +115,12 @@ TGT_CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
TGT_CPPFLAGS += -MD TGT_CPPFLAGS += -MD
TGT_CPPFLAGS += -Wall -Wundef TGT_CPPFLAGS += -Wall -Wundef
TGT_CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS) TGT_CPPFLAGS += $(DEFS)
############################################################################### ###############################################################################
# Linker flags # Linker flags
TGT_LDFLAGS += --static -nostartfiles TGT_LDFLAGS += --static -nostartfiles
TGT_LDFLAGS += -L$(LIB_DIR)
TGT_LDFLAGS += -T$(LDSCRIPT) TGT_LDFLAGS += -T$(LDSCRIPT)
TGT_LDFLAGS += $(ARCH_FLAGS) TGT_LDFLAGS += $(ARCH_FLAGS)
TGT_LDFLAGS += -Wl,-Map=$(*).map TGT_LDFLAGS += -Wl,-Map=$(*).map
@@ -116,7 +132,6 @@ endif
############################################################################### ###############################################################################
# Used libraries # Used libraries
LDLIBS += -l$(LIBNAME)
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
############################################################################### ###############################################################################
@@ -138,10 +153,15 @@ list: $(BINARY).list
images: $(BINARY).images images: $(BINARY).images
flash: $(BINARY).flash flash: $(BINARY).flash
# Either verify the user provided LDSCRIPT exists, or generate it.
ifeq ($(strip $(DEVICE)),)
$(LDSCRIPT): $(LDSCRIPT):
ifeq (,$(wildcard $(LDSCRIPT))) ifeq (,$(wildcard $(LDSCRIPT)))
$(error Unable to find specified linker script: $(LDSCRIPT)) $(error Unable to find specified linker script: $(LDSCRIPT))
endif endif
else
include $(OPENCM3_DIR)/mk/genlink-rules.mk
endif
%.images: %.bin %.hex %.srec %.list %.map %.images: %.bin %.hex %.srec %.list %.map
@#printf "*** $* images generated ***\n" @#printf "*** $* images generated ***\n"