36 lines
948 B
Makefile
36 lines
948 B
Makefile
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# List of files in the vdso, has to be asm only for now
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obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
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# Build rules
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targets := $(obj-vdso64) vdso64.so
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obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
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EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
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EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1
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EXTRA_AFLAGS := -D__VDSO64__ -s
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obj-y += vdso64_wrapper.o
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extra-y += vdso64.lds
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CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
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# Force dependency (incbin is bad)
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$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
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# link rule for the .so file, .lds has to be first
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$(obj)/vdso64.so: $(src)/vdso64.lds $(obj-vdso64)
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$(call if_changed,vdso64ld)
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# assembly rules for the .S files
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$(obj-vdso64): %.o: %.S
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$(call if_changed_dep,vdso64as)
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# actual build commands
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quiet_cmd_vdso64ld = VDSO64L $@
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cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
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quiet_cmd_vdso64as = VDSO64A $@
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cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
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