[PATCH/resend] checksyscalls: Fix stand-alone usage

[Geert Uytterhoeven]

The usage help in the comments
  - refers to the wrong script name,
  - doesn't mention that $srctree must be set.

Hence correct the script name, and derive the source tree path from the script
path, so we no longer need to rely on $srctree being set by the caller.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
Sent before on 2010-08-25.

 scripts/checksyscalls.sh |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 6bb42e7..3ab316e 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -6,7 +6,7 @@
 # and listed below so they are ignored.
 #
 # Usage:
-# syscallchk gcc gcc-options
+# checksyscalls.sh gcc gcc-options
 #
 
 ignore_list() {
@@ -204,5 +204,5 @@ sed -n -e '/^\#define/ s/[^_]*__NR_\([^[:space:]]*\).*/\
 \#endif/p' $1
 }
 
-(ignore_list && syscall_list ${srctree}/arch/x86/include/asm/unistd_32.h) | \
+(ignore_list && syscall_list $(dirname $0)/../arch/x86/include/asm/unistd_32.h) | \
 $* -E -x c - > /dev/null
-- 
1.7.0.4

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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