openwrt/toolchain/musl/Config.in

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# Password crypt stubbing
config MUSL_DISABLE_CRYPT_SIZE_HACK
bool "Include crypt() support for SHA256, SHA512 and Blowfish ciphers"
depends on TOOLCHAINOPTS && USE_MUSL && !EXTERNAL_TOOLCHAIN
default n
help
Enable this option to re-include crypt() support for the SHA256, SHA512 and
Blowfish ciphers. Without this option, attempting to hash a string with a salt
requesting one of these ciphers will cause the crypt() function to call stub
implementations which will always fail with errno ENOSYS. Including the ciphers
will increase the library size by about 14KB after LZMA compression.