Re: tcpdump and pcapng with comments

[Guy Harris <gharris () sonic net>]

On Apr 6, 2025, at 11:19 PM, Mahesh V <maheshvenkateshwaran () gmail com> wrote:

> configure:7921: checking for flex
> configure:7937: found tools/arm-5.3-uclibc-1.0.12/usr/bin/flex
> configure:7948: result: flex
> configure:7986: flex conftest.l
> flex: fatal internal error, exec of 
> /var/tmp/tool-chains/buildroot-2016.02-5.3-arm/crosstools-arm-gcc-5.3-linux-4.1-uclibc-1.0.12-binutils-2.25-NPTL/usr/bin/m4
>  failed
>
> which m4
> # which m4
> tools/arm-5.3-uclibc-1.0.12/usr/bin/m4

"which" gave you a *relative* path?

But that path appears to differ from the path that flex tried to use.

What does "which flex" print?

> m4 exists and I have set M4PATH env variable as well; however, it seems to pick it up from where flex was built 
> before.

Why was flex built at all?  Why not just rely on the system flex or the cross-build flex that comes with the OS?
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