litex/software/common.mak

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Makefile
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TARGET_PREFIX=lm32-elf-
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RM ?= rm -f
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CC_normal := $(TARGET_PREFIX)gcc
CX_normal := $(TARGET_PREFIX)g++
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AS_normal := $(TARGET_PREFIX)as
AR_normal := $(TARGET_PREFIX)ar
LD_normal := $(TARGET_PREFIX)ld
OBJCOPY_normal := $(TARGET_PREFIX)objcopy
RANLIB_normal := $(TARGET_PREFIX)ranlib
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CC_quiet = @echo " CC " $@ && $(TARGET_PREFIX)gcc
CX_quiet = @echo " CX " $@ && $(TARGET_PREFIX)g++
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AS_quiet = @echo " AS " $@ && $(TARGET_PREFIX)as
AR_quiet = @echo " AR " $@ && $(TARGET_PREFIX)ar
LD_quiet = @echo " LD " $@ && $(TARGET_PREFIX)ld
OBJCOPY_quiet = @echo " OBJCOPY " $@ && $(TARGET_PREFIX)objcopy
RANLIB_quiet = @echo " RANLIB " $@ && $(TARGET_PREFIX)ranlib
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GIT_ID:=$(shell echo -e "from misoclib.identifier.git import get_id\nprint(hex(get_id()), end='')" | python3)
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ifeq ($(V),1)
CC = $(CC_normal)
CX = $(CX_normal)
AS = $(AS_normal)
AR = $(AR_normal)
LD = $(LD_normal)
OBJCOPY = $(OBJCOPY_normal)
RANLIB = $(RANLIB_normal)
else
CC = $(CC_quiet)
CX = $(CX_quiet)
AS = $(AS_quiet)
AR = $(AR_quiet)
LD = $(LD_quiet)
OBJCOPY = $(OBJCOPY_quiet)
RANLIB = $(RANLIB_quiet)
endif
# Toolchain options
#
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INCLUDES = -I$(MSCDIR)/software/include/base -I$(MSCDIR)/software/include -I$(MSCDIR)/common
COMMONFLAGS = -Os -mbarrel-shift-enabled -mmultiply-enabled -mdivide-enabled -msign-extend-enabled \
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-Wall -fno-builtin -nostdinc -DGIT_ID=$(GIT_ID) $(INCLUDES)
CFLAGS = $(COMMONFLAGS) -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes
CXXFLAGS = $(COMMONFLAGS) -fno-exceptions -ffreestanding
LDFLAGS = -nostdlib -nodefaultlibs
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# compile and generate dependencies, based on
# http://scottmcpeak.com/autodepend/autodepend.html
define compilexx-dep
$(CX) -c $(CXXFLAGS) $(1) $< -o $*.o
@$(CX_normal) -MM $(CXXFLAGS) $(1) $< > $*.d
@mv -f $*.d $*.d.tmp
@sed -e 's|.*:|$*.o:|' < $*.d.tmp > $*.d
@sed -e 's/.*://' -e 's/\\$$//' < $*.d.tmp | fmt -1 | \
sed -e 's/^ *//' -e 's/$$/:/' >> $*.d
@rm -f $*.d.tmp
endef
define compile-dep
$(CC) -c $(CFLAGS) $(1) $< -o $*.o
@$(CC_normal) -MM $(CFLAGS) $(1) $< > $*.d
@mv -f $*.d $*.d.tmp
@sed -e 's|.*:|$*.o:|' < $*.d.tmp > $*.d
@sed -e 's/.*://' -e 's/\\$$//' < $*.d.tmp | fmt -1 | \
sed -e 's/^ *//' -e 's/$$/:/' >> $*.d
@rm -f $*.d.tmp
endef
define assemble
$(AS) -o $*.o $<
endef