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* [PATCH] Fix CONFIG_CROSS_COMPILE issue in .config
@ 2010-06-17 12:50 Tiago Maluta
  2010-06-21 19:06 ` Andrew Morton
  2012-02-16  6:03 ` ramana
  0 siblings, 2 replies; 15+ messages in thread
From: Tiago Maluta @ 2010-06-17 12:50 UTC (permalink / raw)
  To: linux-kernel; +Cc: Roland McGrath

Linux has an recent option to define CROSS_COMPILE in menuconfig.

Typically, one of the options when building for another target is
('arm' is just an example):

# make ARCH=arm CROSS_COMPILE=arm-cc O=../build

If I omit CROSS_COMPILE and use the new way in .config:
CONFIG_CROSS_COMPILE="arm-cc"

I got:

   cc1: error: unrecognized command line option "-mlittle-endian"
   cc1: error: unrecognized command line option "-mabi=aapcs-linux"
   cc1: error: unrecognized command line option "-mno-thumb-interwork"
   /usr/src/linux/kernel/bounds.c:1: error: bad value (armv5t) for
-march= switch
   /usr/src/linux/kernel/bounds.c:1: error: bad value (armv5t) for
-mtune= switch
   make[2]: *** [kernel/bounds.s] Error 1
   make[1]: *** [prepare0] Error 2
   make: *** [sub-make] Error 2

Verbose output clearly says that I'm using the host compiler instead
cross compiler.
This patch fixed my problem:

---
 Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Makefile b/Makefile
index d49d96c..5a6c7d5 100644
--- a/Makefile
+++ b/Makefile
@@ -190,7 +190,7 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/i386/
-e s/sun4u/sparc64/ \
 export KBUILD_BUILDHOST := $(SUBARCH)
 ARCH           ?= $(SUBARCH)
 CROSS_COMPILE  ?=
-CROSS_COMPILE  ?= $(CONFIG_CROSS_COMPILE:"%"=%)
+CROSS_COMPILE  := $(shell grep CONFIG_CROSS_COMPILE .config | cut -d'"' -f2)

 # Architecture as present in compile.h
 UTS_MACHINE    := $(ARCH)
--
1.7.0.2


--tm

^ permalink raw reply related	[flat|nested] 15+ messages in thread

end of thread, other threads:[~2012-02-16  6:05 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-06-17 12:50 [PATCH] Fix CONFIG_CROSS_COMPILE issue in .config Tiago Maluta
2010-06-21 19:06 ` Andrew Morton
2010-06-21 19:09   ` Roland McGrath
2010-06-21 19:54   ` Michal Marek
2010-06-23  3:44     ` Tiago Maluta
2010-08-04 12:16       ` Yegor Yefremov
2010-08-05 21:37         ` Roland Dreier
2010-08-05 22:26           ` Roland McGrath
2010-08-10  6:43             ` Yegor Yefremov
2010-08-10  7:33               ` Roland McGrath
2010-08-10 11:21               ` Michal Marek
2010-08-16 12:35                 ` Andrew Hendry
2010-08-16 12:40                   ` Michal Marek
2010-08-16 12:51                     ` Andrew Hendry
2012-02-16  6:03 ` ramana

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