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x86 vDSO: makefile cleanup
This cleans up the arch/x86/vdso/Makefile rules for vdso.so to share more code with the vdso32-*.so rules and remove old cruft. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -23,25 +23,15 @@ $(obj)/vdso.o: $(obj)/vdso.so
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targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y)
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# The DSO images are built using a special linker script.
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quiet_cmd_syscall = SYSCALL $@
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cmd_syscall = $(CC) -m elf_x86_64 -nostdlib $(SYSCFLAGS_$(@F)) \
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-Wl,-T,$(filter-out FORCE,$^) -o $@
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export CPPFLAGS_vdso.lds += -P -C
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vdso-flags = -fPIC -shared -Wl,-soname=linux-vdso.so.1 \
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$(call ld-option, -Wl$(comma)--hash-style=sysv) \
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-Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
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SYSCFLAGS_vdso.so = $(vdso-flags)
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SYSCFLAGS_vdso.so.dbg = $(vdso-flags)
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VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -Wl,-soname=linux-vdso.so.1 \
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-Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
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$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
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$(obj)/vdso.so: $(src)/vdso.lds $(vobjs) FORCE
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$(obj)/vdso.so.dbg: $(src)/vdso.lds $(vobjs) FORCE
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$(call if_changed,syscall)
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$(call if_changed,vdso)
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$(obj)/%.so: OBJCOPYFLAGS := -S
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$(obj)/%.so: $(obj)/%.so.dbg FORCE
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@ -49,8 +39,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
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CFL := $(PROFILING) -mcmodel=small -fPIC -g0 -O2 -fasynchronous-unwind-tables -m64
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$(obj)/vclock_gettime.o: KBUILD_CFLAGS = $(CFL)
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$(obj)/vgetcpu.o: KBUILD_CFLAGS = $(CFL)
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$(vobjs): KBUILD_CFLAGS = $(CFL)
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targets += vdso-syms.lds
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obj-$(VDSO64-y) += vdso-syms.lds
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