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Re: [PATCH] Revert 'Fix logic error in _AC_PROG_LEX_YYTEXT_DECL (#109320

From: Paul Eggert
Subject: Re: [PATCH] Revert 'Fix logic error in _AC_PROG_LEX_YYTEXT_DECL (#109320)'
Date: Thu, 16 Jul 2020 10:51:22 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 7/16/20 10:34 AM, Ross Burton wrote:
Wouldn't that break cross-compilation where a host flex is present but
target libfl isn't?  That case worked previously and should work fine,
as libfl isn't actually that useful.

That shouldn't be a problem when building from tarballs, as flex shouldn't be needed then and the patch is a win because it prevents the build from failing unnecessarily. However, it could be a problem when building from Git repositories where you need flex but may well not need the library.

So I installed the attached patch, which implements Zack's first suggestion. I'm being somewhat bold in installing here; feel free to comment and suggest improvements (or suggest I revert :-).

Attachment: 0001-AC_PROG_LEX-no-longer-sets-LEXLIB-for-yywrap.patch
Description: Text Data

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