37 lines
962 B
Makefile
37 lines
962 B
Makefile
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# List of files in the vdso, has to be asm only for now
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obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
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# Build rules
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targets := $(obj-vdso32) vdso32.so
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obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
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EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
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EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1
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EXTRA_AFLAGS := -D__VDSO32__ -s
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obj-y += vdso32_wrapper.o
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extra-y += vdso32.lds
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CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
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# Force dependency (incbin is bad)
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$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
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# link rule for the .so file, .lds has to be first
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$(obj)/vdso32.so: $(src)/vdso32.lds $(obj-vdso32)
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$(call if_changed,vdso32ld)
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# assembly rules for the .S files
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$(obj-vdso32): %.o: %.S
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$(call if_changed_dep,vdso32as)
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# actual build commands
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quiet_cmd_vdso32ld = VDSO32L $@
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cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $^ -o $@
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quiet_cmd_vdso32as = VDSO32A $@
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cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
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