1 # List of files in the vdso, has to be asm only for now
3 obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
7 targets := $(obj-vdso64) vdso64.so
8 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
10 EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
11 EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1
12 EXTRA_AFLAGS := -D__VDSO64__ -s
14 obj-y += vdso64_wrapper.o
16 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
18 # Force dependency (incbin is bad)
19 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
21 # link rule for the .so file, .lds has to be first
22 $(obj)/vdso64.so: $(src)/vdso64.lds $(obj-vdso64)
23 $(call if_changed,vdso64ld)
25 # assembly rules for the .S files
26 $(obj-vdso64): %.o: %.S
27 $(call if_changed_dep,vdso64as)
29 # actual build commands
30 quiet_cmd_vdso64ld = VDSO64L $@
31 cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
32 quiet_cmd_vdso64as = VDSO64A $@
33 cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<