20d0021394
This patch makes the command: make ARCH=um SUBARCH=i386 work on x86_64 hosts (with support for building 32-bit binaries). This is especially needed since 64-bit UMLs don't support 32-bit emulation for guest binaries, currently. This has been tested in all possible cases and works. Only exception is that I've built but not tested a 64-bit binary, because I hadn't a 64-bit filesystem available. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
22 lines
661 B
Makefile
22 lines
661 B
Makefile
clean-files += unmap_tmp.o unmap_fin.o unmap.o
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ifdef CONFIG_MODE_TT
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#Always build unmap_fin.o
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extra-y += unmap_fin.o
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#Do dependency tracking for unmap.o (it will be always built, but won't get the tracking unless we use this).
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targets += unmap.o
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#XXX: partially copied from arch/um/scripts/Makefile.rules
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$(obj)/unmap.o: _c_flags = $(call unprofile,$(CFLAGS))
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quiet_cmd_wrapld = LD $@
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define cmd_wrapld
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$(LD) $(LDFLAGS) -r -o $(obj)/unmap_tmp.o $< $(shell $(CC) $(CFLAGS) -print-file-name=libc.a); \
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$(OBJCOPY) $(UML_OBJCOPYFLAGS) $(obj)/unmap_tmp.o $@ -G switcheroo
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endef
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$(obj)/unmap_fin.o : $(obj)/unmap.o FORCE
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$(call if_changed,wrapld)
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endif
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