arch/powerpc/kernel/vdso64/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # List of files in the vdso, has to be asm only for now
   3
   4 obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o
   5
   6 # Build rules
   7
   8 targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
   9 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
  10
  11 GCOV_PROFILE := n
  12 KCOV_INSTRUMENT := n
  13 UBSAN_SANITIZE := n
  14
  15 ccflags-y := -shared -fno-common -fno-builtin -nostdlib \
  16         -Wl,-soname=linux-vdso64.so.1 -Wl,--hash-style=both
  17 asflags-y := -D__VDSO64__ -s
  18
  19 obj-y += vdso64_wrapper.o
  20 extra-y += vdso64.lds
  21 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
  22
  23 # Force dependency (incbin is bad)
  24 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
  25
  26 # link rule for the .so file, .lds has to be first
  27 $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
  28         $(call if_changed,vdso64ld)
  29
  30 # strip rule for the .so file
  31 $(obj)/%.so: OBJCOPYFLAGS := -S
  32 $(obj)/%.so: $(obj)/%.so.dbg FORCE
  33         $(call if_changed,objcopy)
  34
  35 # actual build commands
  36 quiet_cmd_vdso64ld = VDSO64L $@
  37       cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
  38
  39 # install commands for the unstripped file
  40 quiet_cmd_vdso_install = INSTALL $@
  41       cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
  42
  43 vdso64.so: $(obj)/vdso64.so.dbg
  44         @mkdir -p $(MODLIB)/vdso
  45         $(call cmd,vdso_install)
  46
  47 vdso_install: vdso64.so