2018-12-18 21:13:35 +09:00
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2005-04-16 15:20:36 -07:00
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2010-08-17 01:40:20 -04:00
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2006-06-08 22:12:42 -07:00
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2018-12-21 17:33:04 +09:00
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2011-06-01 16:00:46 -04:00
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2005-04-16 15:20:36 -07:00
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2018-07-20 16:46:27 +09:00
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2018-11-30 18:15:50 +09:00
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2015-02-24 16:37:13 +01:00
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2005-11-08 21:34:54 -08:00
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2010-08-17 10:21:19 +02:00
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2005-11-08 21:34:54 -08:00
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2018-01-11 22:39:41 +09:00
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2005-11-08 21:34:54 -08:00
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kconfig: reference environment variables directly and remove 'option env='
To get access to environment variables, Kconfig needs to define a
symbol using "option env=" syntax. It is tedious to add a symbol entry
for each environment variable given that we need to define much more
such as 'CC', 'AS', 'srctree' etc. to evaluate the compiler capability
in Kconfig.
Adding '$' for symbol references is grammatically inconsistent.
Looking at the code, the symbols prefixed with 'S' are expanded by:
- conf_expand_value()
This is used to expand 'arch/$ARCH/defconfig' and 'defconfig_list'
- sym_expand_string_value()
This is used to expand strings in 'source' and 'mainmenu'
All of them are fixed values independent of user configuration. So,
they can be changed into the direct expansion instead of symbols.
This change makes the code much cleaner. The bounce symbols 'SRCARCH',
'ARCH', 'SUBARCH', 'KERNELVERSION' are gone.
sym_init() hard-coding 'UNAME_RELEASE' is also gone. 'UNAME_RELEASE'
should be replaced with an environment variable.
ARCH_DEFCONFIG is a normal symbol, so it should be simply referenced
without '$' prefix.
The new syntax is addicted by Make. The variable reference needs
parentheses, like $(FOO), but you can omit them for single-letter
variables, like $F. Yet, in Makefiles, people tend to use the
parenthetical form for consistency / clarification.
At this moment, only the environment variable is supported, but I will
extend the concept of 'variable' later on.
The variables are expanded in the lexer so we can simplify the token
handling on the parser side.
For example, the following code works.
[Example code]
config MY_TOOLCHAIN_LIST
string
default "My tools: CC=$(CC), AS=$(AS), CPP=$(CPP)"
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_MY_TOOLCHAIN_LIST="My tools: CC=gcc, AS=as, CPP=gcc -E"
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2018-05-28 18:21:40 +09:00
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2005-04-16 15:20:36 -07:00
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2005-11-08 21:34:54 -08:00
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2018-07-05 11:46:12 +09:00
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2010-08-17 10:21:19 +02:00
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2018-07-05 11:46:12 +09:00
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2010-08-17 10:21:19 +02:00
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2018-07-05 11:46:12 +09:00
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2010-08-17 10:21:19 +02:00
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2018-07-05 11:46:12 +09:00
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2010-08-17 10:21:19 +02:00
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2018-07-05 11:46:12 +09:00
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2010-08-17 10:21:19 +02:00
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2018-07-05 11:46:12 +09:00
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2015-01-12 13:18:26 +00:00
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2010-08-17 10:21:19 +02:00
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2006-06-08 22:12:51 -07:00
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2009-05-18 01:36:54 +02:00
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2005-04-16 15:20:36 -07:00
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|
kconfig: reference environment variables directly and remove 'option env='
To get access to environment variables, Kconfig needs to define a
symbol using "option env=" syntax. It is tedious to add a symbol entry
for each environment variable given that we need to define much more
such as 'CC', 'AS', 'srctree' etc. to evaluate the compiler capability
in Kconfig.
Adding '$' for symbol references is grammatically inconsistent.
Looking at the code, the symbols prefixed with 'S' are expanded by:
- conf_expand_value()
This is used to expand 'arch/$ARCH/defconfig' and 'defconfig_list'
- sym_expand_string_value()
This is used to expand strings in 'source' and 'mainmenu'
All of them are fixed values independent of user configuration. So,
they can be changed into the direct expansion instead of symbols.
This change makes the code much cleaner. The bounce symbols 'SRCARCH',
'ARCH', 'SUBARCH', 'KERNELVERSION' are gone.
sym_init() hard-coding 'UNAME_RELEASE' is also gone. 'UNAME_RELEASE'
should be replaced with an environment variable.
ARCH_DEFCONFIG is a normal symbol, so it should be simply referenced
without '$' prefix.
The new syntax is addicted by Make. The variable reference needs
parentheses, like $(FOO), but you can omit them for single-letter
variables, like $F. Yet, in Makefiles, people tend to use the
parenthetical form for consistency / clarification.
At this moment, only the environment variable is supported, but I will
extend the concept of 'variable' later on.
The variables are expanded in the lexer so we can simplify the token
handling on the parser side.
For example, the following code works.
[Example code]
config MY_TOOLCHAIN_LIST
string
default "My tools: CC=$(CC), AS=$(AS), CPP=$(CPP)"
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_MY_TOOLCHAIN_LIST="My tools: CC=gcc, AS=as, CPP=gcc -E"
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2018-05-28 18:21:40 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
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|
2018-07-20 16:46:27 +09:00
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2005-04-16 15:20:36 -07:00
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2007-11-10 20:01:56 +01:00
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2011-05-31 12:30:26 -04:00
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2007-11-10 20:01:56 +01:00
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2013-08-06 18:45:07 +02:00
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2011-05-31 12:31:57 -04:00
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2007-11-10 20:01:56 +01:00
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2013-08-06 18:45:07 +02:00
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2007-11-10 20:01:56 +01:00
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2011-05-31 12:30:26 -04:00
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2007-11-10 20:01:56 +01:00
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2018-02-17 03:38:31 +09:00
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2007-11-10 20:01:56 +01:00
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2013-08-06 18:45:07 +02:00
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2007-11-10 20:01:56 +01:00
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2012-07-13 11:27:12 -07:00
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2018-02-09 01:19:07 +09:00
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2012-07-13 11:27:12 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2012-07-13 11:27:12 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:45 -07:00
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2006-06-08 22:12:51 -07:00
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2006-06-08 22:12:38 -07:00
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2006-12-13 00:34:07 -08:00
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2016-01-14 18:13:49 +00:00
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2006-06-08 22:12:45 -07:00
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|
kconfig: reference environment variables directly and remove 'option env='
To get access to environment variables, Kconfig needs to define a
symbol using "option env=" syntax. It is tedious to add a symbol entry
for each environment variable given that we need to define much more
such as 'CC', 'AS', 'srctree' etc. to evaluate the compiler capability
in Kconfig.
Adding '$' for symbol references is grammatically inconsistent.
Looking at the code, the symbols prefixed with 'S' are expanded by:
- conf_expand_value()
This is used to expand 'arch/$ARCH/defconfig' and 'defconfig_list'
- sym_expand_string_value()
This is used to expand strings in 'source' and 'mainmenu'
All of them are fixed values independent of user configuration. So,
they can be changed into the direct expansion instead of symbols.
This change makes the code much cleaner. The bounce symbols 'SRCARCH',
'ARCH', 'SUBARCH', 'KERNELVERSION' are gone.
sym_init() hard-coding 'UNAME_RELEASE' is also gone. 'UNAME_RELEASE'
should be replaced with an environment variable.
ARCH_DEFCONFIG is a normal symbol, so it should be simply referenced
without '$' prefix.
The new syntax is addicted by Make. The variable reference needs
parentheses, like $(FOO), but you can omit them for single-letter
variables, like $F. Yet, in Makefiles, people tend to use the
parenthetical form for consistency / clarification.
At this moment, only the environment variable is supported, but I will
extend the concept of 'variable' later on.
The variables are expanded in the lexer so we can simplify the token
handling on the parser side.
For example, the following code works.
[Example code]
config MY_TOOLCHAIN_LIST
string
default "My tools: CC=$(CC), AS=$(AS), CPP=$(CPP)"
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_MY_TOOLCHAIN_LIST="My tools: CC=gcc, AS=as, CPP=gcc -E"
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2018-05-28 18:21:40 +09:00
|
|
|
|
|
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|
2005-04-16 15:20:36 -07:00
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|
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|
2018-05-22 21:36:12 +02:00
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|
2010-08-17 10:21:19 +02:00
|
|
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|
2006-06-08 22:12:38 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:38 -07:00
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2005-11-08 21:34:54 -08:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2013-06-25 23:37:44 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2011-05-31 12:30:26 -04:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2012-07-13 11:27:12 -07:00
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2005-11-08 21:34:54 -08:00
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2005-04-16 15:20:36 -07:00
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2010-08-24 00:14:47 -04:00
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2010-08-14 23:57:43 -04:00
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2005-04-16 15:20:36 -07:00
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2010-08-14 23:57:43 -04:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2010-08-14 23:57:43 -04:00
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2008-09-29 05:27:11 +02:00
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2018-11-30 18:15:48 +09:00
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2008-09-29 05:27:11 +02:00
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2006-06-08 22:12:42 -07:00
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2010-08-14 23:57:43 -04:00
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2006-06-08 22:12:42 -07:00
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2008-01-03 23:33:44 +01:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2010-08-14 23:57:43 -04:00
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2005-04-16 15:20:36 -07:00
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2006-07-13 12:54:07 -06:00
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kconfig: remove S_OTHER symbol type and correct dependency tracking
The S_OTHER type could be set only when conf_read_simple() is reading
include/config/auto.conf file.
For example, CONFIG_FOO=y exists in include/config/auto.conf but it is
missing from the currently parsed Kconfig files, sym_lookup() allocates
a new symbol, and sets its type to S_OTHER.
Strangely, it will be set to S_STRING by conf_set_sym_val() a few lines
below while it is obviously bool or tristate type. On the other hand,
when CONFIG_BAR="bar" is being dropped from include/config/auto.conf,
its type remains S_OTHER. Because for_all_symbols() omits S_OTHER
symbols, conf_touch_deps() misses to touch include/config/bar.h
This behavior has been a pretty mystery for me, and digging the git
histroy did not help. At least, touching depfiles is broken for string
type symbols.
I removed S_OTHER entirely, and reimplemented it more simply.
If CONFIG_FOO was visible in the previous syncconfig, but is missing
now, what we want to do is quite simple; just call conf_touch_dep()
to touch include/config/foo.h instead of allocating a new symbol data.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-11-30 18:15:51 +09:00
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2008-09-29 05:27:11 +02:00
|
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|
kconfig: remove S_OTHER symbol type and correct dependency tracking
The S_OTHER type could be set only when conf_read_simple() is reading
include/config/auto.conf file.
For example, CONFIG_FOO=y exists in include/config/auto.conf but it is
missing from the currently parsed Kconfig files, sym_lookup() allocates
a new symbol, and sets its type to S_OTHER.
Strangely, it will be set to S_STRING by conf_set_sym_val() a few lines
below while it is obviously bool or tristate type. On the other hand,
when CONFIG_BAR="bar" is being dropped from include/config/auto.conf,
its type remains S_OTHER. Because for_all_symbols() omits S_OTHER
symbols, conf_touch_deps() misses to touch include/config/bar.h
This behavior has been a pretty mystery for me, and digging the git
histroy did not help. At least, touching depfiles is broken for string
type symbols.
I removed S_OTHER entirely, and reimplemented it more simply.
If CONFIG_FOO was visible in the previous syncconfig, but is missing
now, what we want to do is quite simple; just call conf_touch_dep()
to touch include/config/foo.h instead of allocating a new symbol data.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-11-30 18:15:51 +09:00
|
|
|
|
2006-06-08 22:12:42 -07:00
|
|
|
|
kconfig: remove S_OTHER symbol type and correct dependency tracking
The S_OTHER type could be set only when conf_read_simple() is reading
include/config/auto.conf file.
For example, CONFIG_FOO=y exists in include/config/auto.conf but it is
missing from the currently parsed Kconfig files, sym_lookup() allocates
a new symbol, and sets its type to S_OTHER.
Strangely, it will be set to S_STRING by conf_set_sym_val() a few lines
below while it is obviously bool or tristate type. On the other hand,
when CONFIG_BAR="bar" is being dropped from include/config/auto.conf,
its type remains S_OTHER. Because for_all_symbols() omits S_OTHER
symbols, conf_touch_deps() misses to touch include/config/bar.h
This behavior has been a pretty mystery for me, and digging the git
histroy did not help. At least, touching depfiles is broken for string
type symbols.
I removed S_OTHER entirely, and reimplemented it more simply.
If CONFIG_FOO was visible in the previous syncconfig, but is missing
now, what we want to do is quite simple; just call conf_touch_dep()
to touch include/config/foo.h instead of allocating a new symbol data.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-11-30 18:15:51 +09:00
|
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|
2006-06-08 22:12:42 -07:00
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2008-01-03 23:33:44 +01:00
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2005-04-16 15:20:36 -07:00
|
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2007-11-10 20:01:56 +01:00
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|
2010-08-24 00:14:47 -04:00
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2016-03-16 21:27:27 +01:00
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2005-04-16 15:20:36 -07:00
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2018-11-30 18:15:48 +09:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:42 -07:00
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2005-11-08 21:34:54 -08:00
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2013-06-25 23:37:44 +02:00
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2005-11-08 21:34:54 -08:00
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2005-04-16 15:20:36 -07:00
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2008-01-03 23:33:44 +01:00
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2005-04-16 15:20:36 -07:00
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2008-01-07 21:09:55 +01:00
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2005-04-16 15:20:36 -07:00
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2012-07-13 11:27:12 -07:00
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2005-04-16 15:20:36 -07:00
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2005-11-08 21:34:49 -08:00
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2012-01-23 17:29:05 -05:00
|
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|
2018-01-11 22:39:41 +09:00
|
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|
2012-01-23 17:29:05 -05:00
|
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|
2005-11-08 21:34:49 -08:00
|
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2006-12-13 00:34:07 -08:00
|
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2006-06-08 22:12:38 -07:00
|
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|
2016-01-14 18:13:49 +00:00
|
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|
2005-11-08 21:34:49 -08:00
|
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|
2016-01-14 18:13:49 +00:00
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2005-11-08 21:34:49 -08:00
|
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|
2005-04-16 15:20:36 -07:00
|
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|
2018-07-03 14:43:31 +02:00
|
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|
2012-01-23 17:29:05 -05:00
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2005-11-08 21:34:54 -08:00
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2006-06-08 22:12:41 -07:00
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2005-11-08 21:34:54 -08:00
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2012-01-23 17:29:05 -05:00
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2011-05-31 12:30:26 -04:00
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2005-11-08 21:34:54 -08:00
|
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2006-06-08 22:12:41 -07:00
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2012-01-23 17:29:05 -05:00
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2005-11-08 21:34:54 -08:00
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2012-01-23 17:29:05 -05:00
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2005-11-08 21:34:54 -08:00
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2007-07-09 11:43:58 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-09 11:43:58 -07:00
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2006-06-08 22:12:42 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-09 11:43:58 -07:00
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2005-04-16 15:20:36 -07:00
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2006-12-13 00:34:07 -08:00
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2005-04-16 15:20:36 -07:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2011-10-22 10:48:49 -04:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2010-12-05 01:33:16 -05:00
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2010-07-31 23:35:33 +02:00
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2011-07-14 15:31:07 -04:00
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2011-05-15 23:42:09 -04:00
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2011-07-20 17:38:57 +02:00
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2011-05-15 23:42:09 -04:00
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2011-07-14 15:31:07 -04:00
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2011-05-15 23:42:09 -04:00
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2011-07-20 17:38:57 +02:00
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2010-07-31 23:35:33 +02:00
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2011-07-14 15:31:07 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2011-10-22 10:48:49 -04:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:34 +02:00
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2010-08-14 23:22:16 +02:00
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2010-07-31 23:35:34 +02:00
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2010-08-14 23:22:16 +02:00
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2010-08-12 09:11:51 +02:00
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2010-07-31 23:35:34 +02:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:34 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:39 -07:00
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2005-04-16 15:20:36 -07:00
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kconfig: Avoid format overflow warning from GCC 8.1
In file included from scripts/kconfig/zconf.tab.c:2485:
scripts/kconfig/confdata.c: In function ‘conf_write’:
scripts/kconfig/confdata.c:773:22: warning: ‘%s’ directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
sprintf(newname, "%s%s", dirname, basename);
^~
scripts/kconfig/confdata.c:773:19: note: assuming directive output of 7 bytes
sprintf(newname, "%s%s", dirname, basename);
^~~~~~
scripts/kconfig/confdata.c:773:2: note: ‘sprintf’ output 1 or more bytes (assuming 4104) into a destination of size 4097
sprintf(newname, "%s%s", dirname, basename);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
scripts/kconfig/confdata.c:776:23: warning: ‘.tmpconfig.’ directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
^~~~~~~~~~~
scripts/kconfig/confdata.c:776:3: note: ‘sprintf’ output between 13 and 4119 bytes into a destination of size 4097
sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Increase the size of tmpname and newname to make GCC happy.
Cc: stable@vger.kernel.org
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-02 09:02:09 -07:00
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2005-04-16 15:20:36 -07:00
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2018-07-20 16:46:27 +09:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2011-05-15 23:42:09 -04:00
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2005-04-16 15:20:36 -07:00
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2006-12-13 00:34:06 -08:00
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2005-04-16 15:20:36 -07:00
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2011-05-15 23:42:09 -04:00
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2005-04-16 15:20:36 -07:00
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2010-07-31 23:35:33 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:51 -07:00
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2006-10-01 11:48:53 +02:00
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2006-06-08 22:12:51 -07:00
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2005-04-16 15:20:36 -07:00
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2018-05-22 21:36:12 +02:00
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2006-06-08 22:12:38 -07:00
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2006-12-13 00:34:07 -08:00
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2005-04-16 15:20:36 -07:00
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2006-06-08 22:12:39 -07:00
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2018-07-20 16:46:26 +09:00
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2018-07-20 16:46:29 +09:00
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2018-07-20 16:46:26 +09:00
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2018-11-30 18:15:49 +09:00
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2006-06-08 22:12:42 -07:00
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2009-05-18 01:36:54 +02:00
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2006-06-08 22:12:42 -07:00
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2018-11-30 18:15:50 +09:00
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2006-06-08 22:12:42 -07:00
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2009-05-18 01:36:54 +02:00
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2006-06-08 22:12:42 -07:00
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2016-01-14 18:13:49 +00:00
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2006-06-08 22:12:42 -07:00
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2018-07-03 14:43:31 +02:00
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2006-06-08 22:12:42 -07:00
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2018-11-30 18:15:50 +09:00
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2006-06-08 22:12:42 -07:00
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2018-11-30 18:15:50 +09:00
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2006-06-08 22:12:42 -07:00
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kconfig: allow all config targets to write auto.conf if missing
Currently, only syncconfig creates or updates include/config/auto.conf
and some other files. Other config targets create or update only the
.config file.
When you configure and build the kernel from a pristine source tree,
any config target is followed by syncconfig in the build stage since
include/config/auto.conf is missing.
We are moving compiler tests from Makefile to Kconfig. It means that
parsing Kconfig files will be more costly since Kconfig invokes the
compiler commands internally. Thus, we want to avoid invoking Kconfig
twice (one for *config to create the .config, and one for syncconfig
to synchronize the auto.conf). If auto.conf does not exist, we can
generate all configuration files in the first configuration stage,
which will save the syncconfig in the build stage.
Please note this should be done only when auto.conf is missing. If
*config blindly did this, time stamp files under include/config/ would
be unnecessarily touched, triggering unneeded rebuild of objects.
I assume a scenario like this:
1. You have a source tree that has already been built
with CONFIG_FOO disabled
2. Run "make menuconfig" to enable CONFIG_FOO
3. CONFIG_FOO turns out to be unnecessary.
Run "make menuconfig" again to disable CONFIG_FOO
4. Run "make"
In this case, include/config/foo.h should not be touched since there
is no change in CONFIG_FOO. The sync process should be delayed until
the user really attempts to build the kernel.
This commit has another motivation; I want to suppress the 'No such
file or directory' warning from the 'include' directive.
The top-level Makefile includes auto.conf with '-include' directive,
like this:
ifeq ($(dot-config),1)
-include include/config/auto.conf
endif
This looks strange because auto.conf is mandatory when dot-config is 1.
I guess only the reason of using '-include' is to suppress the warning
'include/config/auto.conf: No such file or directory' when building
from a clean tree. However, this has a side-effect; Make considers
the files included by '-include' are optional. Hence, Make continues
to build even if it fails to generate include/config/auto.conf. I will
change this in the next commit, but the warning message is annoying.
(At least, kbuild test robot reports it as a regression.)
With this commit, Kconfig will generate all configuration files together
with the .config and I guess it is a solution good enough to suppress
the warning.
Note:
GNU Make 4.2 or later does not display the warning from the 'include'
directive if include files are successfully generated. See GNU Make
commit 87a5f98d248f ("[SV 102] Don't show unnecessary include file
errors.") However, older GNU Make versions are still widely used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-20 16:46:31 +09:00
|
|
|
|
2006-06-08 22:12:39 -07:00
|
|
|
|
|
|
|
|
|
2009-05-18 01:36:54 +02:00
|
|
|
|
kconfig: allow all config targets to write auto.conf if missing
Currently, only syncconfig creates or updates include/config/auto.conf
and some other files. Other config targets create or update only the
.config file.
When you configure and build the kernel from a pristine source tree,
any config target is followed by syncconfig in the build stage since
include/config/auto.conf is missing.
We are moving compiler tests from Makefile to Kconfig. It means that
parsing Kconfig files will be more costly since Kconfig invokes the
compiler commands internally. Thus, we want to avoid invoking Kconfig
twice (one for *config to create the .config, and one for syncconfig
to synchronize the auto.conf). If auto.conf does not exist, we can
generate all configuration files in the first configuration stage,
which will save the syncconfig in the build stage.
Please note this should be done only when auto.conf is missing. If
*config blindly did this, time stamp files under include/config/ would
be unnecessarily touched, triggering unneeded rebuild of objects.
I assume a scenario like this:
1. You have a source tree that has already been built
with CONFIG_FOO disabled
2. Run "make menuconfig" to enable CONFIG_FOO
3. CONFIG_FOO turns out to be unnecessary.
Run "make menuconfig" again to disable CONFIG_FOO
4. Run "make"
In this case, include/config/foo.h should not be touched since there
is no change in CONFIG_FOO. The sync process should be delayed until
the user really attempts to build the kernel.
This commit has another motivation; I want to suppress the 'No such
file or directory' warning from the 'include' directive.
The top-level Makefile includes auto.conf with '-include' directive,
like this:
ifeq ($(dot-config),1)
-include include/config/auto.conf
endif
This looks strange because auto.conf is mandatory when dot-config is 1.
I guess only the reason of using '-include' is to suppress the warning
'include/config/auto.conf: No such file or directory' when building
from a clean tree. However, this has a side-effect; Make considers
the files included by '-include' are optional. Hence, Make continues
to build even if it fails to generate include/config/auto.conf. I will
change this in the next commit, but the warning message is annoying.
(At least, kbuild test robot reports it as a regression.)
With this commit, Kconfig will generate all configuration files together
with the .config and I guess it is a solution good enough to suppress
the warning.
Note:
GNU Make 4.2 or later does not display the warning from the 'include'
directive if include files are successfully generated. See GNU Make
commit 87a5f98d248f ("[SV 102] Don't show unnecessary include file
errors.") However, older GNU Make versions are still widely used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-20 16:46:31 +09:00
|
|
|
|
2009-12-07 16:38:33 +01:00
|
|
|
|
2010-07-31 23:35:33 +02:00
|
|
|
|
2006-06-08 22:12:39 -07:00
|
|
|
|
kconfig: allow all config targets to write auto.conf if missing
Currently, only syncconfig creates or updates include/config/auto.conf
and some other files. Other config targets create or update only the
.config file.
When you configure and build the kernel from a pristine source tree,
any config target is followed by syncconfig in the build stage since
include/config/auto.conf is missing.
We are moving compiler tests from Makefile to Kconfig. It means that
parsing Kconfig files will be more costly since Kconfig invokes the
compiler commands internally. Thus, we want to avoid invoking Kconfig
twice (one for *config to create the .config, and one for syncconfig
to synchronize the auto.conf). If auto.conf does not exist, we can
generate all configuration files in the first configuration stage,
which will save the syncconfig in the build stage.
Please note this should be done only when auto.conf is missing. If
*config blindly did this, time stamp files under include/config/ would
be unnecessarily touched, triggering unneeded rebuild of objects.
I assume a scenario like this:
1. You have a source tree that has already been built
with CONFIG_FOO disabled
2. Run "make menuconfig" to enable CONFIG_FOO
3. CONFIG_FOO turns out to be unnecessary.
Run "make menuconfig" again to disable CONFIG_FOO
4. Run "make"
In this case, include/config/foo.h should not be touched since there
is no change in CONFIG_FOO. The sync process should be delayed until
the user really attempts to build the kernel.
This commit has another motivation; I want to suppress the 'No such
file or directory' warning from the 'include' directive.
The top-level Makefile includes auto.conf with '-include' directive,
like this:
ifeq ($(dot-config),1)
-include include/config/auto.conf
endif
This looks strange because auto.conf is mandatory when dot-config is 1.
I guess only the reason of using '-include' is to suppress the warning
'include/config/auto.conf: No such file or directory' when building
from a clean tree. However, this has a side-effect; Make considers
the files included by '-include' are optional. Hence, Make continues
to build even if it fails to generate include/config/auto.conf. I will
change this in the next commit, but the warning message is annoying.
(At least, kbuild test robot reports it as a regression.)
With this commit, Kconfig will generate all configuration files together
with the .config and I guess it is a solution good enough to suppress
the warning.
Note:
GNU Make 4.2 or later does not display the warning from the 'include'
directive if include files are successfully generated. See GNU Make
commit 87a5f98d248f ("[SV 102] Don't show unnecessary include file
errors.") However, older GNU Make versions are still widely used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-20 16:46:31 +09:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-06-08 22:12:42 -07:00
|
|
|
|
|
|
|
|
|
2018-07-20 16:46:26 +09:00
|
|
|
|
2006-06-08 22:12:39 -07:00
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2018-11-30 18:15:49 +09:00
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2006-06-08 22:12:42 -07:00
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2006-06-08 22:12:39 -07:00
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2009-12-07 16:38:33 +01:00
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2006-06-08 22:12:39 -07:00
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2009-12-07 16:38:33 +01:00
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2006-06-08 22:12:39 -07:00
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2011-05-15 23:42:09 -04:00
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2006-06-08 22:12:39 -07:00
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2012-04-12 19:46:33 -04:00
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2006-06-08 22:12:39 -07:00
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2010-07-31 23:35:33 +02:00
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2012-04-12 19:46:33 -04:00
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2011-05-15 23:42:09 -04:00
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2010-07-31 23:35:33 +02:00
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2011-05-15 23:42:09 -04:00
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2006-06-08 22:12:39 -07:00
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2009-12-07 16:38:33 +01:00
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2006-06-08 22:12:39 -07:00
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2009-10-18 00:49:24 +02:00
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2018-07-20 16:46:29 +09:00
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2006-06-08 22:12:39 -07:00
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2018-07-20 16:46:29 +09:00
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2009-12-07 16:38:33 +01:00
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2018-07-20 16:46:29 +09:00
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2009-12-07 16:38:33 +01:00
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2018-07-20 16:46:29 +09:00
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kconfig: allow all config targets to write auto.conf if missing
Currently, only syncconfig creates or updates include/config/auto.conf
and some other files. Other config targets create or update only the
.config file.
When you configure and build the kernel from a pristine source tree,
any config target is followed by syncconfig in the build stage since
include/config/auto.conf is missing.
We are moving compiler tests from Makefile to Kconfig. It means that
parsing Kconfig files will be more costly since Kconfig invokes the
compiler commands internally. Thus, we want to avoid invoking Kconfig
twice (one for *config to create the .config, and one for syncconfig
to synchronize the auto.conf). If auto.conf does not exist, we can
generate all configuration files in the first configuration stage,
which will save the syncconfig in the build stage.
Please note this should be done only when auto.conf is missing. If
*config blindly did this, time stamp files under include/config/ would
be unnecessarily touched, triggering unneeded rebuild of objects.
I assume a scenario like this:
1. You have a source tree that has already been built
with CONFIG_FOO disabled
2. Run "make menuconfig" to enable CONFIG_FOO
3. CONFIG_FOO turns out to be unnecessary.
Run "make menuconfig" again to disable CONFIG_FOO
4. Run "make"
In this case, include/config/foo.h should not be touched since there
is no change in CONFIG_FOO. The sync process should be delayed until
the user really attempts to build the kernel.
This commit has another motivation; I want to suppress the 'No such
file or directory' warning from the 'include' directive.
The top-level Makefile includes auto.conf with '-include' directive,
like this:
ifeq ($(dot-config),1)
-include include/config/auto.conf
endif
This looks strange because auto.conf is mandatory when dot-config is 1.
I guess only the reason of using '-include' is to suppress the warning
'include/config/auto.conf: No such file or directory' when building
from a clean tree. However, this has a side-effect; Make considers
the files included by '-include' are optional. Hence, Make continues
to build even if it fails to generate include/config/auto.conf. I will
change this in the next commit, but the warning message is annoying.
(At least, kbuild test robot reports it as a regression.)
With this commit, Kconfig will generate all configuration files together
with the .config and I guess it is a solution good enough to suppress
the warning.
Note:
GNU Make 4.2 or later does not display the warning from the 'include'
directive if include files are successfully generated. See GNU Make
commit 87a5f98d248f ("[SV 102] Don't show unnecessary include file
errors.") However, older GNU Make versions are still widely used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-20 16:46:31 +09:00
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2018-07-20 16:46:29 +09:00
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2006-06-08 22:12:39 -07:00
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kconfig: allow all config targets to write auto.conf if missing
Currently, only syncconfig creates or updates include/config/auto.conf
and some other files. Other config targets create or update only the
.config file.
When you configure and build the kernel from a pristine source tree,
any config target is followed by syncconfig in the build stage since
include/config/auto.conf is missing.
We are moving compiler tests from Makefile to Kconfig. It means that
parsing Kconfig files will be more costly since Kconfig invokes the
compiler commands internally. Thus, we want to avoid invoking Kconfig
twice (one for *config to create the .config, and one for syncconfig
to synchronize the auto.conf). If auto.conf does not exist, we can
generate all configuration files in the first configuration stage,
which will save the syncconfig in the build stage.
Please note this should be done only when auto.conf is missing. If
*config blindly did this, time stamp files under include/config/ would
be unnecessarily touched, triggering unneeded rebuild of objects.
I assume a scenario like this:
1. You have a source tree that has already been built
with CONFIG_FOO disabled
2. Run "make menuconfig" to enable CONFIG_FOO
3. CONFIG_FOO turns out to be unnecessary.
Run "make menuconfig" again to disable CONFIG_FOO
4. Run "make"
In this case, include/config/foo.h should not be touched since there
is no change in CONFIG_FOO. The sync process should be delayed until
the user really attempts to build the kernel.
This commit has another motivation; I want to suppress the 'No such
file or directory' warning from the 'include' directive.
The top-level Makefile includes auto.conf with '-include' directive,
like this:
ifeq ($(dot-config),1)
-include include/config/auto.conf
endif
This looks strange because auto.conf is mandatory when dot-config is 1.
I guess only the reason of using '-include' is to suppress the warning
'include/config/auto.conf: No such file or directory' when building
from a clean tree. However, this has a side-effect; Make considers
the files included by '-include' are optional. Hence, Make continues
to build even if it fails to generate include/config/auto.conf. I will
change this in the next commit, but the warning message is annoying.
(At least, kbuild test robot reports it as a regression.)
With this commit, Kconfig will generate all configuration files together
with the .config and I guess it is a solution good enough to suppress
the warning.
Note:
GNU Make 4.2 or later does not display the warning from the 'include'
directive if include files are successfully generated. See GNU Make
commit 87a5f98d248f ("[SV 102] Don't show unnecessary include file
errors.") However, older GNU Make versions are still widely used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-20 16:46:31 +09:00
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2006-06-08 22:12:39 -07:00
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2006-12-13 00:34:06 -08:00
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2006-12-13 00:34:07 -08:00
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2006-12-13 00:34:08 -08:00
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2006-12-13 00:34:07 -08:00
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2006-12-13 00:34:08 -08:00
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2006-12-13 00:34:07 -08:00
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2006-12-13 00:34:08 -08:00
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2006-12-13 00:34:07 -08:00
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2006-12-13 00:34:08 -08:00
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2006-12-13 00:34:07 -08:00
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2006-12-13 00:34:06 -08:00
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2006-12-13 00:34:08 -08:00
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2008-05-06 04:55:55 +02:00
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2013-04-28 22:36:38 +02:00
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2010-08-12 09:11:52 +02:00
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2008-05-06 04:55:55 +02:00
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2010-08-12 09:11:52 +02:00
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2010-12-05 01:41:16 -05:00
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2010-08-12 09:11:52 +02:00
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2013-04-28 22:36:38 +02:00
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2010-08-12 09:11:52 +02:00
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2013-04-28 17:33:15 +02:00
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2010-08-12 09:11:52 +02:00
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2013-04-28 22:36:38 +02:00
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2010-08-12 09:11:52 +02:00
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2013-06-06 20:37:00 -07:00
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2008-05-06 04:55:55 +02:00
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2010-08-12 09:11:52 +02:00
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2008-05-06 04:55:55 +02:00
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2010-08-12 09:11:52 +02:00
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2013-06-06 20:37:00 -07:00
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2010-08-12 09:11:52 +02:00
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2013-04-28 22:36:38 +02:00
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2010-08-12 09:11:52 +02:00
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2017-12-16 00:38:02 +09:00
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2013-04-13 17:18:36 +02:00
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2013-04-28 22:36:38 +02:00
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2008-05-06 04:55:55 +02:00
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2013-04-24 22:00:04 +02:00
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2008-05-06 04:55:55 +02:00
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2013-04-28 22:36:38 +02:00
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2008-05-06 04:55:55 +02:00
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2014-04-07 15:39:09 -07:00
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2008-05-06 04:55:55 +02:00
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2013-04-13 17:18:36 +02:00
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2008-05-06 04:55:55 +02:00
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2009-03-15 11:05:12 +01:00
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2008-05-06 04:55:55 +02:00
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2008-10-26 05:12:34 +00:00
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2008-05-06 04:55:55 +02:00
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2009-03-15 11:05:12 +01:00
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2010-12-05 01:41:16 -05:00
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2009-03-15 11:05:12 +01:00
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2010-12-05 01:41:16 -05:00
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2009-03-15 11:05:12 +01:00
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2013-06-06 20:37:00 -07:00
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2008-05-06 04:55:55 +02:00
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2010-08-12 09:11:52 +02:00
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2013-04-28 22:36:38 +02:00
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2008-05-06 04:55:55 +02:00
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2013-04-28 22:36:38 +02:00
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2008-05-06 04:55:55 +02:00
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