[PATCH] kbuild: don't put temp files in source
The as-instr/ld-option need to create temporary files, but create them in the output directory, when compiling external modules. Reformat them a bit and use $(CC) instead of $(AS) as the former is used by kbuild to assemble files. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: Andi Kleen <ak@suse.de> Cc: Jan Beulich <jbeulich@novell.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: <jpdenheijer@gmail.com> Cc: Horst Schirmeier <horst@schirmeier.com> Cc: Daniel Drake <dsd@gentoo.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -56,6 +56,9 @@ endef
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# gcc support functions
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# See documentation in Documentation/kbuild/makefiles.txt
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# output directory for tests below
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TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
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# as-option
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# Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
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@ -66,9 +69,11 @@ as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
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# as-instr
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# Usage: cflags-y += $(call as-instr, instr, option1, option2)
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as-instr = $(shell if echo -e "$(1)" | $(AS) >/dev/null 2>&1 -W -Z -o astest$$$$.out ; \
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then echo "$(2)"; else echo "$(3)"; fi; \
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rm -f astest$$$$.out)
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as-instr = $(shell if echo -e "$(1)" | \
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$(CC) $(AFLAGS) -c -xassembler - \
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-o $(TMPOUT)astest$$$$.out > /dev/null 2>&1; \
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then rm $(TMPOUT)astest$$$$.out; echo "$(2)"; \
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else echo "$(3)"; fi)
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# cc-option
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# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
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@ -97,10 +102,10 @@ cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \
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# ld-option
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# Usage: ldflags += $(call ld-option, -Wl$(comma)--hash-style=both)
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ld-option = $(shell if $(CC) $(1) \
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-nostdlib -o ldtest$$$$.out -xc /dev/null \
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> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi; \
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rm -f ldtest$$$$.out)
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ld-option = $(shell if $(CC) $(1) -nostdlib -xc /dev/null \
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-o $(TMPOUT)ldtest$$$$.out > /dev/null 2>&1; \
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then rm $(TMPOUT)ldtest$$$$.out; echo "$(1)"; \
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else echo "$(2)"; fi)
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###
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# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
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