Commit Graph

1083 Commits

Author SHA1 Message Date
Isak Ellmer
2bbb486162 scripts: kconfig: nconf: make nconfig accept jk keybindings
Make nconfig accept jk keybindings for movement in addition to arrow
keys.

Signed-off-by: Isak Ellmer <isak01@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:57 +09:00
Chun-Tse Shao
d5ea4fece4 kbuild: Allow kernel installation packaging to override pkg-config
Add HOSTPKG_CONFIG to allow tooling that builds the kernel to override
what pkg-config and parameters are used.

Signed-off-by: Chun-Tse Shao <ctshao@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-04-05 17:03:31 +09:00
Masahiro Yamada
b6ad541697 kconfig: remove stale comment about removed kconfig_print_symbol()
This comment is about kconfig_print_symbol(), which was removed by
commit 6ce45a91a9 ("kconfig: refactor conf_write_symbol()").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-04-02 00:04:17 +09:00
Masahiro Yamada
a7d4f58e99 kconfig: fix missing '# end of' for empty menu
Currently, "# end of ..." is inserted when the menu goes back to its
parent.

Hence, an empty menu:

  menu "Foo"
  endmenu

... ends up with unbalanced menu comments, like this:

  #
  # Foo
  #

Let's close the menu comments properly:

  #
  # Foo
  #
  # end of Foo

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-02-18 11:36:17 +09:00
Masahiro Yamada
868653f421 kconfig: add fflush() before ferror() check
As David Laight pointed out, there is not much point in calling
ferror() unless you call fflush() first.

Reported-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-02-18 11:33:35 +09:00
Jing Leng
1b9e740a81 kconfig: fix failing to generate auto.conf
When the KCONFIG_AUTOCONFIG is specified (e.g. export \
KCONFIG_AUTOCONFIG=output/config/auto.conf), the directory of
include/config/ will not be created, so kconfig can't create deps
files in it and auto.conf can't be generated.

Signed-off-by: Jing Leng <jleng@ambarella.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-02-12 23:24:19 +09:00
Masahiro Yamada
d23a0c3718 kconfig: fix missing fclose() on error paths
The file is not closed when ferror() fails.

Fixes: 00d674cb35 ("kconfig: refactor conf_write_dep()")
Fixes: 57ddd07c45 ("kconfig: refactor conf_write_autoconf()")
Reported-by: Ryan Cai <ycaibb@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-02-10 09:17:26 +09:00
Brenda Streiff
8a4c5b2a6d kconfig: let 'shell' return enough output for deep path names
The 'shell' built-in only returns the first 256 bytes of the command's
output. In some cases, 'shell' is used to return a path; by bumping up
the buffer size to 4096 this lets us capture up to PATH_MAX.

The specific case where I ran into this was due to commit 1e860048c5
("gcc-plugins: simplify GCC plugin-dev capability test"). After this
change, we now use `$(shell,$(CC) -print-file-name=plugin)` to return
a path; if the gcc path is particularly long, then the path ends up
truncated at the 256 byte mark, which makes the HAVE_GCC_PLUGINS
depends test always fail.

Signed-off-by: Brenda Streiff <brenda.streiff@ni.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-02-08 13:20:11 +09:00
Masahiro Yamada
129ab0d2d9 kbuild: do not quote string values in include/config/auto.conf
The previous commit fixed up all shell scripts to not include
include/config/auto.conf.

Now that include/config/auto.conf is only included by Makefiles,
we can change it into a more Make-friendly form.

Previously, Kconfig output string values enclosed with double-quotes
(both in the .config and include/config/auto.conf):

    CONFIG_X="foo bar"

Unlike shell, Make handles double-quotes (and single-quotes as well)
verbatim. We must rip them off when used.

There are some patterns:

  [1] $(patsubst "%",%,$(CONFIG_X))
  [2] $(CONFIG_X:"%"=%)
  [3] $(subst ",,$(CONFIG_X))
  [4] $(shell echo $(CONFIG_X))

These are not only ugly, but also fragile.

[1] and [2] do not work if the value contains spaces, like
   CONFIG_X=" foo bar "

[3] does not work correctly if the value contains double-quotes like
   CONFIG_X="foo\"bar"

[4] seems to work better, but has a cost of forking a process.

Anyway, quoted strings were always PITA for our Makefiles.

This commit changes Kconfig to stop quoting in include/config/auto.conf.

These are the string type symbols referenced in Makefiles or scripts:

    ACPI_CUSTOM_DSDT_FILE
    ARC_BUILTIN_DTB_NAME
    ARC_TUNE_MCPU
    BUILTIN_DTB_SOURCE
    CC_IMPLICIT_FALLTHROUGH
    CC_VERSION_TEXT
    CFG80211_EXTRA_REGDB_KEYDIR
    EXTRA_FIRMWARE
    EXTRA_FIRMWARE_DIR
    EXTRA_TARGETS
    H8300_BUILTIN_DTB
    INITRAMFS_SOURCE
    LOCALVERSION
    MODULE_SIG_HASH
    MODULE_SIG_KEY
    NDS32_BUILTIN_DTB
    NIOS2_DTB_SOURCE
    OPENRISC_BUILTIN_DTB
    SOC_CANAAN_K210_DTB_SOURCE
    SYSTEM_BLACKLIST_HASH_LIST
    SYSTEM_REVOCATION_KEYS
    SYSTEM_TRUSTED_KEYS
    TARGET_CPU
    UNUSED_KSYMS_WHITELIST
    XILINX_MICROBLAZE0_FAMILY
    XILINX_MICROBLAZE0_HW_VER
    XTENSA_VARIANT_NAME

I checked them one by one, and fixed up the code where necessary.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-01-08 18:03:57 +09:00
Łukasz Stelmach
0431acd87a streamline_config.pl: show the full Kconfig name
Show the very same file name that was passed to open()
in case the operation failed.

Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
2021-12-02 17:02:36 +09:00
Josh Triplett
c39afe6248 kconfig: Add make mod2noconfig to disable module options
When converting a modular kernel to a monolithic kernel, once the kernel
works without loading any modules, this helps to quickly disable all the
modules before turning off module support entirely.

Refactor conf_rewrite_mod_or_yes to a more general
conf_rewrite_tristates that accepts an old and new state.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Tested-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-12-02 17:02:36 +09:00
Masahiro Yamada
fee762d69a kconfig: refactor conf_touch_dep()
If this function fails to touch a dummy header due to missing parent
directory, then it creates it and touches the file again.

This was needed because CONFIG_FOO_BAR was previously tracked by
include/config/foo/bar.h. (include/config/foo/ may not exist here)

This is no longer the case since commit 0e0345b77a ("kbuild: redo
fake deps at include/config/*.h"); now all the fake headers are placed
right under include/config/, like include/config/FOO_BAR.

Do not try to create parent directory, include/config/, which already
exists.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
00d674cb35 kconfig: refactor conf_write_dep()
The if ... else inside the for-loop is unneeded because one empty
line is placed after printing the last element of deps_config.

Currently, all errors in conf_write_dep() are ignored. Add proper
error checks.

Rename it to conf_write_autoconf_cmd(), which is more intuitive.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
57ddd07c45 kconfig: refactor conf_write_autoconf()
This function does similar for auto.conf and autoconf.h

Create __conf_write_autoconf() helper to factor out the common code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
8499f2dd57 kconfig: add conf_get_autoheader_name()
For consistency with conf_get_autoconfig_name()

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
80f7bc7737 kconfig: move sym_escape_string_value() to confdata.c
Now that sym_escape_string_value() is only used in confdata.c
it can be a 'static' function.

Rename it escape_string_value() because it is agnostic about
(struct sym *).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
51d792cb5d kconfig: refactor listnewconfig code
We can reuse __print_symbol() helper to print symbols for listnewconfig.
Only the difference is the format for "n" symbols.

This prints "CONFIG_FOO=n" instead of "# CONFIG_FOO is not set".

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
6ce45a91a9 kconfig: refactor conf_write_symbol()
I do not think 'struct conf_printer' is so useful.

Add simple functions, print_symbol_for_*() to write out one symbol.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:23 +09:00
Masahiro Yamada
ca51b26b4a kconfig: refactor conf_write_heading()
All the call sites of conf_write_heading() pass NULL to the third
argument, and it is not used in the function.

Also, the print_comment hooks are doing much more complex than
needed.

Rewrite the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-11 23:13:14 +09:00
Masahiro Yamada
229d0cfae5 kconfig: remove 'const' from the return type of sym_escape_string_value()
sym_escape_string_value() returns a malloc'ed memory, but as
(const char *). So, it must be casted to (void *) when it is free'd.
This is odd.

The return type of sym_escape_string_value() should be (char *).

I exploited that free(NULL) has no effect.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-01 17:28:17 +09:00
Masahiro Yamada
6988f70cf1 kconfig: rename a variable in the lexer to a clearer name
In Kconfig, like Python, you can enclose a string by double-quotes or
single-quotes. So, both "foo" and 'foo' are allowed.

The variable, "str", is used to remember whether the string started with
a double-quote or a single-quote because open/closing quotation marks
must match.

The name "str" is too generic to understand the intent. Rename it to
"open_quote", which is easier to understand. The type should be 'char'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Boris Kolpackov <boris@codesynthesis.com>
2021-09-30 02:08:59 +09:00
Masahiro Yamada
65017d8381 kconfig: narrow the scope of variables in the lexer
The variables, "ts" and "i", are used locally in the action of
the [ \t]+ pattern in the <HELP> start state.

Define them where they are used.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-09-30 02:05:10 +09:00
Ariel Marcovitch
d05377e184 kconfig: Create links to main menu items in search
When one searches for a main menu item, links aren't created for it like
with the rest of the symbols.

This happens because we trace the item until we get to the rootmenu, but
we don't include it in the path of the item. The rationale was probably
that we don't want to show the main menu in the path of all items,
because it is redundant.

However, when an item has only the rootmenu in its path it should be
included, because this way the user can jump to its location.

Add a 'Main menu' entry in the 'Location:' section for the kconfig
items.

This makes the 'if (i > 0)' superfluous because each item with prompt
will have at least one menu in its path.

Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-09-25 16:15:48 +09:00
Matthias Maennich
a325db2d8f scripts: merge_config: add strict mode to fail upon any redefinition
When merging configuration fragments, it might be of interest to
identify mismatches (redefinitions) programmatically. Hence add the
option -s (strict mode) to instruct merge_config.sh to bail out in
case any redefinition has been detected.

With strict mode, warnings are emitted as before, but the script
terminates with rc=1. If -y is set to define "builtin having
precedence over modules", fragments are still allowed to set =m (while
the base config has =y). Strict mode will tolerate that as demotions
from =y to =m are ignored when setting -y.

Signed-off-by: Matthias Maennich <maennich@google.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-08-10 08:23:39 +09:00
Linus Torvalds
81361b837a Merge tag 'kbuild-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:

 - Increase the -falign-functions alignment for the debug option.

 - Remove ugly libelf checks from the top Makefile.

 - Make the silent build (-s) more silent.

 - Re-compile the kernel if KBUILD_BUILD_TIMESTAMP is specified.

 - Various script cleanups

* tag 'kbuild-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (27 commits)
  scripts: add generic syscallnr.sh
  scripts: check duplicated syscall number in syscall table
  sparc: syscalls: use pattern rules to generate syscall headers
  parisc: syscalls: use pattern rules to generate syscall headers
  nds32: add arch/nds32/boot/.gitignore
  kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
  kbuild: modpost: Explicitly warn about unprototyped symbols
  kbuild: remove trailing slashes from $(KBUILD_EXTMOD)
  kconfig.h: explain IS_MODULE(), IS_ENABLED()
  kconfig: constify long_opts
  scripts/setlocalversion: simplify the short version part
  scripts/setlocalversion: factor out 12-chars hash construction
  scripts/setlocalversion: add more comments to -dirty flag detection
  scripts/setlocalversion: remove workaround for old make-kpkg
  scripts/setlocalversion: remove mercurial, svn and git-svn supports
  kbuild: clean up ${quiet} checks in shell scripts
  kbuild: sink stdout from cmd for silent build
  init: use $(call cmd,) for generating include/generated/compile.h
  kbuild: merge scripts/mkmakefile to top Makefile
  sh: move core-y in arch/sh/Makefile to arch/sh/Kbuild
  ...
2021-07-10 11:01:38 -07:00