From: Parth Pancholi parth.pancholi@toradex.com

Replace lz4c with lz4 for kernel image compression. Although lz4 and lz4c are functionally similar, lz4c has been deprecated upstream since 2018. Since as early as Ubuntu 16.04 and Fedora 25, lz4 and lz4c have been packaged together, making it safe to update the requirement from lz4c to lz4. Consequently, some distributions and build systems, such as OpenEmbedded, have fully transitioned to using lz4. OpenEmbedded core adopted this change in commit fe167e082cbd ("bitbake.conf: require lz4 instead of lz4c"), causing compatibility issues when building the mainline kernel in the latest OpenEmbedded environment, as seen in the errors below. This change maintains compatibility with current kernel builds because both tools have a similar command-line interface while fixing the mainline kernel build failures with the latest master OpenEmbedded builds associated with the mentioned compatibility issues.

LZ4 arch/arm/boot/compressed/piggy_data /bin/sh: 1: lz4c: not found ... ... ERROR: oe_runmake failed

Cc: stable@vger.kernel.org Link: https://github.com/lz4/lz4/pull/553 Suggested-by: Francesco Dolcini francesco.dolcini@toradex.com Signed-off-by: Parth Pancholi parth.pancholi@toradex.com --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile index 79192a3024bf..7630f763f5b2 100644 --- a/Makefile +++ b/Makefile @@ -508,7 +508,7 @@ KGZIP = gzip KBZIP2 = bzip2 KLZOP = lzop LZMA = lzma -LZ4 = lz4c +LZ4 = lz4 XZ = xz ZSTD = zstd