Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f8a745942b1b7f052cb76bb8a893d12cb6329c84
Commit: f8a745942b1b7f052cb76bb8a893d12cb6329c84
Parent: 09736bd36a19aa8c0630e626563e447213c372b5
Author: Jarek Poplawski <[EMAIL PROTECTED]>
AuthorDate: Fri Aug 10 13:01:04 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Sat Aug 11 15:47:41 2007 -0700
docs: note about select in kconfig-language.txt
A warning note from Sam Ravnborg about kconfig's select evilness,
dependencies and the future (slightly corrected).
Signed-off-by: Jarek Poplawski <[EMAIL PROTECTED]>
Cc: Sam Ravnborg <[EMAIL PROTECTED]>
Cc: Roman Zippel <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
Documentation/kbuild/kconfig-language.txt | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/Documentation/kbuild/kconfig-language.txt
b/Documentation/kbuild/kconfig-language.txt
index 536d5bf..fe8b0c4 100644
--- a/Documentation/kbuild/kconfig-language.txt
+++ b/Documentation/kbuild/kconfig-language.txt
@@ -98,6 +98,15 @@ applicable everywhere (see syntax).
times, the limit is set to the largest selection.
Reverse dependencies can only be used with boolean or tristate
symbols.
+ Note:
+ select is evil.... select will by brute force set a symbol
+ equal to 'y' without visiting the dependencies. So abusing
+ select you are able to select a symbol FOO even if FOO depends
+ on BAR that is not set. In general use select only for
+ non-visible symbols (no promts anywhere) and for symbols with
+ no dependencies. That will limit the usefulness but on the
+ other hand avoid the illegal configurations all over. kconfig
+ should one day warn about such things.
- numerical ranges: "range" <symbol> <symbol> ["if" <expr>]
This allows to limit the range of possible input values for int
-
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