EMTime/libopencm3-examples
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

make: enable DEVICE _or_ LDSCRIPT to be specified

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

34
examples/Makefile.rules
View File

@@ -48,8 +48,6 @@ OPT := -Os
###############################################################################
# Source files
LDSCRIPT ?= $(BINARY).ld
OBJS += $(BINARY).o
@@ -72,8 +70,27 @@ ifeq ($(V),1)
$(info Using $(OPENCM3_DIR) path to library)
endif
INCLUDE_DIR = $(OPENCM3_DIR)/include
LIB_DIR = $(OPENCM3_DIR)/lib
define ERR_DEVICE_LDSCRIPT_CONFLICT
You can either specify DEVICE=blah, and have the LDSCRIPT generated,
or you can provide LDSCRIPT, and ensure CPPFLAGS, LDFLAGS and LDLIBS
all contain the correct values for the target you wish to use.
You cannot provide both!
endef
ifeq ($(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 = $(OPENCM3_DIR)/scripts
###############################################################################
@@ -98,13 +115,12 @@ TGT_CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
TGT_CPPFLAGS += -MD
TGT_CPPFLAGS += -Wall -Wundef
TGT_CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
TGT_CPPFLAGS += $(DEFS)
###############################################################################
# Linker flags
TGT_LDFLAGS += --static -nostartfiles
TGT_LDFLAGS += -L$(LIB_DIR)
TGT_LDFLAGS += -T$(LDSCRIPT)
TGT_LDFLAGS += $(ARCH_FLAGS)
TGT_LDFLAGS += -Wl,-Map=$(*).map
@@ -116,7 +132,6 @@ endif
###############################################################################
# Used libraries
LDLIBS += -l$(LIBNAME)
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
###############################################################################
@@ -138,10 +153,15 @@ list: $(BINARY).list
images: $(BINARY).images
flash: $(BINARY).flash
# Either verify the user provided LDSCRIPT exists, or generate it.
ifeq ($(strip $(DEVICE)),)
$(LDSCRIPT):
ifeq (,$(wildcard $(LDSCRIPT)))
$(error Unable to find specified linker script: $(LDSCRIPT))
endif
else
include $(OPENCM3_DIR)/mk/genlink-rules.mk
endif
%.images: %.bin %.hex %.srec %.list %.map
@#printf "*** $* images generated ***\n"