kernel/scripts/kconfig/lkc.h, branch linux-5.1.y

kconfig: rename zconf.l to lexer.l

2019-02-13T14:25:49Z

Use a more logical name. Signed-off-by: Masahiro Yamada

kconfig: split the lexer out of zconf.y

2018-12-28T13:22:38Z

Compile zconf.lex.c independently of the other files. Signed-off-by: Masahiro Yamada

kconfig: split some C files out of zconf.y

2018-12-28T13:22:38Z

I want to compile each C file independently instead of including all of them from zconf.y. Split out confdata.c, expr.c, symbol.c, and preprocess.c . These are low-hanging fruits. Signed-off-by: Masahiro Yamada

kconfig: convert to SPDX License Identifier

2018-12-28T13:22:28Z

All files in lxdialog/ are licensed under GPL-2.0+, and the rest are under GPL-2.0. I added GPL-2.0 tags to test scripts in tests/. Documentation/process/license-rules.rst does not suggest anything about the flex/bison files. Because flex does not accept the C++ comment style at the very top of a file, I used the C style for zconf.l, and so for zconf.y for consistency. Signed-off-by: Masahiro Yamada

kconfig: remove keyword lookup table entirely

2018-12-28T11:44:38Z

Commit 7a88488bbc23 ("[PATCH] kconfig: use gperf for kconfig keywords") introduced gperf for the keyword lookup. Then, commit bb3290d91695 ("Remove gperf usage from toolchain") killed the gperf use. As a result, the linear keyword search was left behind. If we do not use gperf, there is no reason to have the separate table of the keywords. Move all keywords back to the lexer. I also refactored the lexer to remove the COMMAND and PARAM states. Signed-off-by: Masahiro Yamada

kconfig: refactor scanning and parsing "option" properties

2018-12-21T15:25:52Z

For the keywords "modules", "defconfig_list", and "allnoconfig_y", the lexer should pass specific tokens instead of generic T_WORD. This simplifies both the lexer and the parser. Signed-off-by: Masahiro Yamada

kconfig: use distinct tokens for type and default properties

2018-12-21T15:25:34Z

This commit removes kconf_id::stype to prepare for the entire removal of kconf_id.c To simplify the lexer, I want keywords straight-mapped to tokens. Signed-off-by: Masahiro Yamada

kconfig: remove unused sym_get_env_prop() function

2018-08-13T23:59:57Z

This function is unused since commit 104daea149c4 ("kconfig: reference environment variables directly and remove 'option env='"). Signed-off-by: Masahiro Yamada Acked-by: Sam Ravnborg

kconfig: rename file_write_dep and move it to confdata.c

2018-07-25T14:25:28Z

file_write_dep() is called only from conf_write_autoconf(). Move it from util.c to confdata.c to make it static. Also, rename it to conf_write_dep() since it should belong to the group of conf_write* functions. Signed-off-by: Masahiro Yamada

kconfig: reference environment variables directly and remove 'option env='

2018-05-28T18:28:58Z

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 Reviewed-by: Kees Cook