On Fri, Feb 29, 2008 at 02:10:58PM -0500, John W. Linville wrote:
> On Fri, Feb 29, 2008 at 05:34:13PM +0100, Johannes Berg wrote:
> >
> > On Fri, 2008-02-29 at 11:26 -0500, John W. Linville wrote:
> > > On Fri, Feb 29, 2008 at 01:16:59PM +0100, Michael Buesch wrote:
> > >
> > > > I'm wondering if we can't simply pass a commandline parameter to file2alias
> > > > that tells it whether we are crosscompiling. It should simply omit the sanity check
> > >
> > > Sounds reasonable to me.
> >
> > In fact, file2alias shouldn't need a command line argument ...
> >
> > > > in that case. Is there any easy and reliable way to find out whether we
> > > > are crosscompiling from a makefile (I don't know the makefile core that much)?
> > >
> > > Non-empty CROSS_COMPILE definition?
> >
> > ... it can just check whether CROSS_COMPILE is set in its environment.
> > No?
>
> Not a bad idea...something like this?
That version didn't work -- it seems CROSS_COMPILE is always set,
even if it is empty.
This version seems to work, but it is a bit chatty when CROSS_COMPILE
is set and you build lots of modules...thoughts?
John
---
modpost: avoid user/kernel struct size compat check if cross-compiling
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
---
scripts/mod/file2alias.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 9ddf944..37f311e 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -10,6 +10,7 @@
* of the GNU General Public License, incorporated herein by reference.
*/
+#include <stdlib.h>
#include "modpost.h"
/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
@@ -62,6 +63,14 @@ static void device_id_check(const char *modname, const char *device_id,
void *symval)
{
int i;
+ char *cross_compile;
+
+ cross_compile = getenv("CROSS_COMPILE");
+ if (cross_compile && strlen(cross_compile)) {
+ warn("%s: cross-compile cannot verify userspace/kernel "
+ "structure size compatibility.\n", modname);
+ return;
+ }
if (size % id_size || size < id_size) {
fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
--
1.5.3.3
--
John W. Linville
linville@xxxxxxxxxxxxx
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