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75dcaf3d23
Since commit 31847b67bec0 ("kconfig: allow use of relations other than
(in)equality") it is possible to use relational operators in Kconfig
statements. However, those operators give unexpected results when
applied to bool/tristate values:
(n < y) = y (correct)
(m < y) = y (correct)
(n < m) = n (wrong)
This happens because relational operators process bool and tristate
symbols as strings and m sorts before n. It makes little sense to do a
lexicographical compare on bool and tristate values though.
Documentation/kbuild/kconfig-language.txt states that expression can have
a value of 'n', 'm' or 'y' (or 0, 1, 2 respectively for calculations).
Let's make it so for relational comparisons with bool/tristate
expressions as well and document them. If at least one symbol is an
actual string then the lexicographical compare works just as before.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[rebased against OpenWrt kconfig, slightly reword commit message]
(backported from upstream 9059a3493efea6492451430c7e2fa0af799a2abb)
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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| .. | ||
| config | ||
| flashing | ||
| arm-magic.sh | ||
| brcmImage.pl | ||
| bundle-libraries.sh | ||
| checkpatch.pl | ||
| clang-gcc-wrapper | ||
| clean-package.sh | ||
| cleanfile | ||
| cleanpatch | ||
| combined-ext-image.sh | ||
| combined-image.sh | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| deptest.sh | ||
| diffconfig.sh | ||
| dl_cleanup.py | ||
| dl_github_archive.py | ||
| download.pl | ||
| env | ||
| ext-toolchain.sh | ||
| feeds | ||
| fixup-makefile.pl | ||
| gen_image_generic.sh | ||
| gen-dependencies.sh | ||
| get_source_date_epoch.sh | ||
| getver.sh | ||
| ipkg-build | ||
| ipkg-make-index.sh | ||
| ipkg-remove | ||
| kconfig.pl | ||
| linksys-image.sh | ||
| make-ipkg-dir.sh | ||
| md5sum | ||
| metadata.pm | ||
| mkhash.c | ||
| mkits-qsdk-ipq-image.sh | ||
| mkits.sh | ||
| om-fwupgradecfg-gen.sh | ||
| package-metadata.pl | ||
| pad_image | ||
| patch-kernel.sh | ||
| patch-specs.sh | ||
| portable_date.sh | ||
| qemustart | ||
| redboot-script.pl | ||
| relink-lib.sh | ||
| remote-gdb | ||
| rstrip.sh | ||
| slugimage.pl | ||
| srecimage.pl | ||
| strip-kmod.sh | ||
| symlink-tree.sh | ||
| sysupgrade-tar.sh | ||
| target-metadata.pl | ||
| time.pl | ||
| timestamp.pl | ||
| ubinize-image.sh | ||