[Buildroot] [PATCH 01/15] package/pkg-generic.mk: detect files overwritten in TARGET_DIR and HOST_DIR

Nicolas Cavallari nicolas.cavallari at green-communications.fr
Tue Jun 22 09:57:42 UTC 2021

On 22/06/2021 11:30, Thomas Petazzoni wrote:
> On Tue, 22 Jun 2021 09:40:52 +0200
> Herve Codina <herve.codina at bootlin.com> wrote:
>>     Compared to the first version, this patch has an improved commit message and
>>     generates the md5sum snapshot using
>>       'find -L $(1) -type f -print0 | xargs -0 -r md5sum > $($(PKG)_DIR)/.files$(2).md5;'
> But is this better ? Due to not cd-ing into the directory, you will
> have full absolute paths in the .md5 file, and adding LC_ALL=C is quite
> customary too. Ditto for using | xargs instead of -exec.

xargs will run only start one md5sum process if the command line size 
permits it, whereas "-exec md5sum {} ;" will start one md5sum per file.

An alternative is "-exec md5sum {} +", which is essentially xargs-like.

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