From: Andi Kleen <andi@firstfloor.org>
To: sam@ravnborg.org, linux-kernel@vger.kernel.org
Subject: [PATCH] [1/2] kbuild: Add a really-ld-option macro
Date: Wed, 16 Sep 2009 22:36:54 +0200 (CEST) [thread overview]
Message-ID: <20090916203654.6AF88B1755@basil.firstfloor.org> (raw)
In-Reply-To: <200909161036.346507799@firstfloor.org>
Different from the existing ld macro by checking $(LD)
Needed for the next patch
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
scripts/Kbuild.include | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
Index: linux-2.6.31-ak/scripts/Kbuild.include
===================================================================
--- linux-2.6.31-ak.orig/scripts/Kbuild.include
+++ linux-2.6.31-ak/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,)
@@ -135,6 +136,12 @@ cc-ifversion = $(shell [ $(call cc-versi
ld-option = $(call try-run,\
$(CC) $(1) -nostdlib -xc /dev/null -o "$$TMP",$(1),$(2))
+# really-ld-option
+# checks $(LD) unlike ld-option
+# Usage: LDFLAGS += $(call really-ld-option, -X)
+really-ld-option = $(call try-run,\
+ $(CC) /dev/null -c -o "$$TMPO" ; $(LD) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
+
######
###
next prev parent reply other threads:[~2009-09-16 20:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-16 20:36 [PATCH] [0/2] Updated patches for gold -X probing Andi Kleen
2009-09-16 20:36 ` Andi Kleen [this message]
2009-09-19 8:07 ` [PATCH] [1/2] kbuild: Add a really-ld-option macro Sam Ravnborg
2009-09-16 20:36 ` [PATCH] [2/2] kbuild: Check if linker supports the -X option Andi Kleen
2009-09-18 2:31 ` [PATCH] [0/2] Updated patches for gold -X probing Américo Wang
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