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wolfssl: add libwolfssl-cpu-crypto package
libwolfssl-cpu-crypto is a variant of libwolfssl with support for cryptographic CPU instructions on x86_64 and aarch64. On aarch64, wolfSSL does not perform run-time detection, so the library will crash when the AES functions are called. A preinst script attempts to check for support by querying /proc/cpuinfo, if installed in a running system. When building an image, the script will check the DISTRIB_TARGET value in /etc/openwrt_release, and will abort installation if target is bcm27xx. Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| #!/bin/sh | ||
| exec >&2 | ||
| printf "[libwolfssl-cpu-crypto] Checking for Arm v8-A Cryptographic Extension support: " | ||
| if [ -n "${IPKG_INSTROOT}" ]; then | ||
| printf "...[offline]... " | ||
| eval "$(grep '^DISTRIB_TARGET=' "${IPKG_INSTROOT}/etc/openwrt_release")" | ||
| ### @@WOLFSSL_NOASM_REGEX@@ is expanded from WOLFSSL_NOASM_REGEX in the Makefile | ||
| echo "${DISTRIB_TARGET}" | grep '@@WOLFSSL_NOASM_REGEX@@' > /dev/null && { | ||
| echo "not supported" | ||
| echo "Error: Target ${DISTRIB_TARGET} does not support Arm Cryptographic Extension." | ||
| echo "Install the regular libwolfssl package instead of libwolfssl-cpu-crypto." | ||
| exit 1 | ||
| } | ||
| else | ||
| grep -q '^Features.*\baes\b' /proc/cpuinfo || { | ||
| echo "not supported" | ||
| echo "Error: Arm v8-A Cryptographic Extension not supported." | ||
| echo "Install the regular libwolfssl package instead of libwolfssl-cpu-crypto." | ||
| echo "Contents of /proc/cpuinfo:" | ||
| cat /proc/cpuinfo | ||
| exit 1 | ||
| } | ||
| fi | ||
| echo OK | ||
| exit 0 |