[PATCH] build-aux: require GNU grep on FreeBSD

[Ján Tomko]

On a Tuesday in 2021, Roman Bogorodskiy wrote:
>FreeBSD 13.x and newer ship BSD grep which apparently has some
>performance issues causing certain syntax check tests to run longer than
>the default 30 seconds timeout used by meson.
>
>However, GNU grep is still available through the textproc/gnugrep port,
>so require it on FreeBSD if /usr/bin/grep is a BSD grep to make checks
>pass in a reasonable time.
>
>Signed-off-by: Roman Bogorodskiy <bogorodskiy at gmail.com>
>---
> build-aux/Makefile.in     |  1 +
> build-aux/meson.build     | 24 +++++++++++++++++++-----
> build-aux/syntax-check.mk |  1 -
> 3 files changed, 20 insertions(+), 6 deletions(-)
>

Reviewed-by: Ján Tomko <jtomko at redhat.com>

Jano
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