From d3181d18144c86428e2d1255191ff6a469a1a4ab Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Fri, 8 Nov 2002 00:17:44 +0000 Subject: Update doc reference --- extra/Configs/Config.alpha | 2 +- extra/Configs/Config.arm | 2 +- extra/Configs/Config.cris | 2 +- extra/Configs/Config.h8300 | 2 +- extra/Configs/Config.i386 | 2 +- extra/Configs/Config.i386.default | 13 +- extra/Configs/Config.i960 | 2 +- extra/Configs/Config.in | 2 +- extra/Configs/Config.in.arch | 2 +- extra/Configs/Config.m68k | 2 +- extra/Configs/Config.mips | 2 +- extra/Configs/Config.mipsel | 2 +- extra/Configs/Config.powerpc | 2 +- extra/Configs/Config.sh | 2 +- extra/Configs/Config.sparc | 2 +- extra/Configs/Config.v850 | 2 +- extra/config/Kconfig-language.txt | 255 ++++++++++++++++++++++++++++++++++++++ 17 files changed, 277 insertions(+), 21 deletions(-) create mode 100644 extra/config/Kconfig-language.txt (limited to 'extra') diff --git a/extra/Configs/Config.alpha b/extra/Configs/Config.alpha index 0f55c3252..b8c9f2505 100644 --- a/extra/Configs/Config.alpha +++ b/extra/Configs/Config.alpha @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.arm b/extra/Configs/Config.arm index f458f23a1..244226446 100644 --- a/extra/Configs/Config.arm +++ b/extra/Configs/Config.arm @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.cris b/extra/Configs/Config.cris index 4d3514689..012c39ca4 100644 --- a/extra/Configs/Config.cris +++ b/extra/Configs/Config.cris @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.h8300 b/extra/Configs/Config.h8300 index 8c17d89a9..8620dfa4a 100644 --- a/extra/Configs/Config.h8300 +++ b/extra/Configs/Config.h8300 @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.i386 b/extra/Configs/Config.i386 index 55f609bb6..338981875 100644 --- a/extra/Configs/Config.i386 +++ b/extra/Configs/Config.i386 @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.i386.default b/extra/Configs/Config.i386.default index bc215596f..ed118c95f 100644 --- a/extra/Configs/Config.i386.default +++ b/extra/Configs/Config.i386.default @@ -5,21 +5,19 @@ # # Target Architecture Features and Options # +HAVE_ELF=y CONFIG_386=y # CONFIG_486 is not set # CONFIG_586 is not set -# CONFIG_586TSC is not set # CONFIG_586MMX is not set # CONFIG_686 is not set # CONFIG_PENTIUMIII is not set # CONFIG_PENTIUM4 is not set # CONFIG_K6 is not set # CONFIG_K7 is not set -# CONFIG_ELAN is not set # CONFIG_CRUSOE is not set # CONFIG_WINCHIPC6 is not set # CONFIG_WINCHIP2 is not set -# CONFIG_WINCHIP3D is not set # CONFIG_CYRIXIII is not set UCLIBC_HAS_MMU=y UCLIBC_HAS_FLOATS=y @@ -27,9 +25,7 @@ HAS_FPU=y # DO_C99_MATH is not set WARNINGS="-Wall" KERNEL_SOURCE="/usr/src/linux" -UCLIBC_UCLINUX_BROKEN_MUNMAP=y -HAVE_ELF=y -# HAVE_DOT_HIDDEN is not set +C_SYMBOL_PREFIX="" # # General Library Settings @@ -37,6 +33,7 @@ HAVE_ELF=y DOPIC=y HAVE_SHARED=y BUILD_UCLIBC_LDSO=y +LDSO_LDD_SUPPORT=y UCLIBC_HAS_THREADS=y UCLIBC_HAS_LFS=y # MALLOC is not set @@ -64,8 +61,12 @@ ASSUME_DEVPTS=y SHARED_LIB_LOADER_PATH="$(DEVEL_PREFIX)/lib" DEVEL_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc" SYSTEM_DEVEL_PREFIX="$(DEVEL_PREFIX)" +DEVEL_TOOL_PREFIX="$(DEVEL_PREFIX)/usr" # # uClibc hacking options # # DODEBUG is not set +# DOASSERTS is not set +SUPPORT_LD_DEBUG=y +SUPPORT_LD_DEBUG_EARLY=y diff --git a/extra/Configs/Config.i960 b/extra/Configs/Config.i960 index ac35628c2..cf3938ad8 100644 --- a/extra/Configs/Config.i960 +++ b/extra/Configs/Config.i960 @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index a5b820101..96c7e0e4b 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # diff --git a/extra/Configs/Config.in.arch b/extra/Configs/Config.in.arch index da64668e8..08adea63d 100644 --- a/extra/Configs/Config.in.arch +++ b/extra/Configs/Config.in.arch @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # config UCLIBC_HAS_MMU diff --git a/extra/Configs/Config.m68k b/extra/Configs/Config.m68k index 48c70fe54..77ba79408 100644 --- a/extra/Configs/Config.m68k +++ b/extra/Configs/Config.m68k @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.mips b/extra/Configs/Config.mips index 0f55c3252..b8c9f2505 100644 --- a/extra/Configs/Config.mips +++ b/extra/Configs/Config.mips @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.mipsel b/extra/Configs/Config.mipsel index 0f55c3252..b8c9f2505 100644 --- a/extra/Configs/Config.mipsel +++ b/extra/Configs/Config.mipsel @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.powerpc b/extra/Configs/Config.powerpc index 0f55c3252..b8c9f2505 100644 --- a/extra/Configs/Config.powerpc +++ b/extra/Configs/Config.powerpc @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.sh b/extra/Configs/Config.sh index bcd273487..eeee4ba26 100644 --- a/extra/Configs/Config.sh +++ b/extra/Configs/Config.sh @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.sparc b/extra/Configs/Config.sparc index 4d3514689..012c39ca4 100644 --- a/extra/Configs/Config.sparc +++ b/extra/Configs/Config.sparc @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/Configs/Config.v850 b/extra/Configs/Config.v850 index 3ec971e5e..8a54a8fae 100644 --- a/extra/Configs/Config.v850 +++ b/extra/Configs/Config.v850 @@ -1,6 +1,6 @@ # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/config-language.txt. +# see extra/config/Kconfig-language.txt # mainmenu "uClibc C Library Configuration" diff --git a/extra/config/Kconfig-language.txt b/extra/config/Kconfig-language.txt new file mode 100644 index 000000000..a3037ffcf --- /dev/null +++ b/extra/config/Kconfig-language.txt @@ -0,0 +1,255 @@ +Introduction +------------ + +The configuration database is collection of configuration options +organized in a tree structure: + + +- Code maturity level options + | +- Prompt for development and/or incomplete code/drivers + +- General setup + | +- Networking support + | +- System V IPC + | +- BSD Process Accounting + | +- Sysctl support + +- Loadable module support + | +- Enable loadable module support + | +- Set version information on all module symbols + | +- Kernel module loader + +- ... + +Every entry has its own dependencies. These dependencies are used +to determine the visible of an entry. Any child entry is only +visible if its parent entry is also visible. + +Menu entries +------------ + +Most entries define a config option, all other entries help to organize +them. A single configuration option is defined like this: + +config MODVERSIONS + bool "Set version information on all module symbols" + depends MODULES + help + Usually, modules have to be recompiled whenever you switch to a new + kernel. ... + +Every line starts with a key word and can be followed by multiple +arguments. "config" starts a new config entry. The following lines +define attributes for this config option. Attributes can be the type of +the config option, input prompt, dependencies, help text and default +values. A config option can be defined multiple times with the same +name, but every definition can have only a single input prompt and the +type must not conflict. + +Menu attributes +--------------- + +A menu entry can have a number of attributes. Not all of them are +applicable everywhere (see syntax). + +- type definition: "bool"/"tristate"/"string"/"hex"/"integer" + Every config option must have a type. There are only two basic types: + tristate and string, the other types base on these two. The type + definition optionally accepts an input prompt, so these two examples + are equivalent: + + bool "Networking support" + and + bool + prompt "Networking support" + +- input prompt: "prompt" ["if" ] + Every menu entry can have at most one prompt, which is used to display + to the user. Optionally dependencies only for this prompt can be added + with "if". + +- default value: "default" ["if" ] + A config option can have any number of default values. If multiple + default values are visible, only the first defined one is active. + Default values are not limited to the menu entry, where they are + defined, this means the default can be defined somewhere else or be + overriden by an earlier definition. + The default value is only assigned to the config symbol if no other + value was set by the user (via the input prompt above). If an input + prompt is visible the default value is presented to the user and can + be overridden by him. + Optionally dependencies only for this default value can be added with + "if". + +- dependencies: "depends on"/"requires" + This defines a dependency for this menu entry. If multiple + dependencies are defined they are connected with '&&'. Dependencies + are applied to all other options within this menu entry (which also + accept "if" expression), so these two examples are equivalent: + + bool "foo" if BAR + default y if BAR + and + depends on BAR + bool "foo" + default y + +- help text: "help" + This defines a help text. The end of the help text is determined by + the level indentation, this means it ends at the first line which has + a smaller indentation than the first line of the help text. + + +Menu dependencies +----------------- + +Dependencies define the visibility of a menu entry and can also reduce +the input range of tristate symbols. The tristate logic used in the +expressions uses one more state than normal boolean logic to express the +module state. Dependency expressions have the following syntax: + + ::= (1) + '=' (2) + '!=' (3) + '(' ')' (4) + '!' (5) + '||' (6) + '&&' (7) + +Expressions are listed in decreasing order of precedence. + +(1) Convert the symbol into an expression. Boolean and tristate symbols + are simply converted into the respective expression values. All + other symbol types result in 'n'. +(2) If the values of both symbols are equal, it returns 'y', + otherwise 'n'. +(3) If the values of both symbols are equal, it returns 'n', + otherwise 'y'. +(4) Returns the value of the expression. Used to override precedence. +(5) Returns the result of (2-/expr/). +(6) Returns the result of min(/expr/, /expr/). +(7) Returns the result of max(/expr/, /expr/). + +An expression can have a value of 'n', 'm' or 'y' (or 0, 1, 2 +respectively for calculations). A menu entry becomes visible when it's +expression evaluates to 'm' or 'y'. + +There are two type of symbols: constant and nonconstant symbols. +Nonconstant symbols are the most common ones and are defined with the +'config' statement. Nonconstant symbols consist entirely of alphanumeric +characters or underscores. +Constant symbols are only part of expressions. Constant symbols are +always surrounded by single or double quotes. Within the quote any +other character is allowed and the quotes can be escaped using '\'. + +Menu structure +-------------- + +The position of a menu entry in the tree is determined in two ways. First +it can be specified explicitely: + +menu "Network device support" + depends NET + +config NETDEVICES + ... + +endmenu + +All entries within the "menu" ... "endmenu" block become a submenu of +"Network device support". All subentries inherit the dependencies from +the menu entry, e.g. this means the dependency "NET" is added to the +dependency list of the config option NETDEVICES. + +The other way to generate the menu structure is done by analyzing the +dependencies. If a menu entry somehow depends on the previous entry, it +can be made a submenu of it. First the the previous (parent) symbol must +be part of the dependency list and then one of these two condititions +must be true: +- the child entry must become invisible, if the parent is set to 'n' +- the child entry must only be visible, if the parent is visible + +config MODULES + bool "Enable loadable module support" + +config MODVERSIONS + bool "Set version information on all module symbols" + depends MODULES + +comment "module support disabled" + depends !MODULES + +MODVERSIONS directly depends on MODULES, this means it's only visible if +MODULES is different from 'n'. The comment on the other hand is always +visible when MODULES it's visible (the (empty) dependency of MODULES is +also part of the comment dependencies). + + +Kconfig syntax +-------------- + +The configuration file describes a series of menu entries, where every +line starts with a keyword (except help texts). The following keywords +end a menu entry: +- config +- choice/endchoice +- comment +- menu/endmenu +- if/endif +- source +The first four also start the definition of a menu entry. + +config: + + "config" + + +This defines a config symbol and accepts any of above +attributes as options. + +choices: + + "choice" + + + "endchoice" + +This defines a choice group and accepts any of above attributes as +options. A choice can only be of type bool or tristate, while a boolean +choice only allows a single config entry to be selected, a tristate +choice also allows any number of config entries to be set to 'm'. This +can be used if multiple drivers for a single hardware exists and only a +single driver can be compiled/loaded into the kernel, but all drivers +can be compiled as modules. +A choice accepts another option "optional", which allows to set the +choice to 'n' and no entry needs to be selected. + +comment: + + "comment" + + +This defines a comment which is displayed to the user during the +configuration process and is also echoed to the output files. The only +possible options are dependencies. + +menu: + + "menu" + + + "endmenu" + +This defines a menu block, see "Menu structure" above for more +information. The only possible options are dependencies. + +if: + + "if" + + "endif" + +This defines an if block. The dependency expression is appended +to all enclosed menu entries. + +source: + + "source" + +This reads the specified configuration file. This file is always parsed. -- cgit v1.2.3