[14/18] kbuild: fix ld-option Makefile macro to really work
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Message ID 200909181949.n8IJnYUK019239@imap1.linux-foundation.org
State New, archived
Headers show

Commit Message

Andrew Morton Sept. 18, 2009, 7:49 p.m. UTC
From: Andi Kleen <andi@firstfloor.org>

Needed for the next patch, "kbuild: check if linker supports the -X
option".

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/Kbuild.include |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Patch
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diff -puN scripts/Kbuild.include~kbuild-fix-ld-option-makefile-macro-to-really-work scripts/Kbuild.include
--- a/scripts/Kbuild.include~kbuild-fix-ld-option-makefile-macro-to-really-work
+++ a/scripts/Kbuild.include
@@ -83,11 +83,12 @@  TMPOUT := $(if $(KBUILD_EXTMOD),$(firstw
 # is automatically cleaned up.
 try-run = $(shell set -e;		\
 	TMP="$(TMPOUT).$$$$.tmp";	\
+	TMPO="$(TMPOUT).$$$$.o";	\
 	if ($(1)) >/dev/null 2>&1;	\
 	then echo "$(2)";		\
 	else echo "$(3)";		\
 	fi;				\
-	rm -f "$$TMP")
+	rm -f "$$TMP" "$$TMPO")
 
 # as-option
 # Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
@@ -133,7 +134,7 @@  cc-ifversion = $(shell [ $(call cc-versi
 # ld-option
 # Usage: ldflags += $(call ld-option, -Wl$(comma)--hash-style=both)
 ld-option = $(call try-run,\
-	$(CC) $(1) -nostdlib -xc /dev/null -o "$$TMP",$(1),$(2))
+	$(CC) /dev/null -c -o "$$TMPO" ; $(LD) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
 
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