0b41f8129c
Since this runs on BPMP a meaningful alignment is 32 bytes, so use a nicer 256. Reduces size of libs of up to 64KB. If libs are compiled for armv7/8, 4KB should be used if missing from compiler.
45 lines
1.3 KiB
Makefile
45 lines
1.3 KiB
Makefile
ifeq ($(strip $(DEVKITARM)),)
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$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
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endif
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include $(DEVKITARM)/base_rules
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TARGET := libsys_lp0
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BUILDDIR := ../../build/$(TARGET)
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OUTPUTDIR := ../../output
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BDKDIR := bdk
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BDKINC := -I../../$(BDKDIR)
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# Track compiler flags
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TRACK_CFLAGS = $(BUILDDIR)/.cflags
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TRACK_LDFLAGS = $(BUILDDIR)/.ldflags
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OBJS = $(addprefix $(BUILDDIR)/,\
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sys_sdramlp0.o \
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)
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ARCH := -march=armv4t -mtune=arm7tdmi -mthumb-interwork
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CFLAGS = $(ARCH) -O2 -nostdlib -fpie -ffunction-sections -fdata-sections -fomit-frame-pointer -std=gnu11 -Wall -Wsign-compare $(CUSTOMDEFINES)
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LDFLAGS = $(ARCH) -fpie -pie -nostartfiles -lgcc -Wl,-z,max-page-size=256
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.PHONY: all
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all: $(TARGET).bso
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$(BUILDDIR)/%.o: ./%.c $(TRACK_CFLAGS)
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@$(CC) $(CFLAGS) $(BDKINC) -MMD -MP -c $< -o $@
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$(TARGET).bso: $(OBJS) $(TRACK_LDFLAGS)
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@$(CC) $(LDFLAGS) -e sdram_lp0_entry $(OBJS) -o $(OUTPUTDIR)/$(TARGET).bso
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@$(STRIP) -g $(OUTPUTDIR)/$(TARGET).bso
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@echo "Built module: "$(TARGET)".bso"
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$(BUILDDIR):
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@mkdir -p "$(BUILDDIR)"
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# Non objects change detectors.
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$(TRACK_CFLAGS): $(BUILDDIR)
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@echo '$(CFLAGS)' | cmp -s - $@ || echo '$(CFLAGS)' > $@
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$(TRACK_LDFLAGS): $(BUILDDIR)
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@echo '$(LDFLAGS)' | cmp -s - $@ || echo '$(LDFLAGS)' > $@
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-include $(OBJS:.o=.d)
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