[sr #110312] 2.69b: broken AC_PROG_LEX macro

[Tomasz Kłoczko]

Follow-up Comment #1, sr #110312 (project autoconf):

Actually seems like I'm a bit wrong. After roll back to autoconf 2.69 the same
looks a bit different:

```
checking for flex... flex
checking lex output file root... lex.yy
checking lex library... none needed
```


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[sr #110312] 2.69b: broken AC_PROG_LEX macro

[Tomasz Kłoczko]

URL:
  

 Summary: 2.69b: broken AC_PROG_LEX macro
 Project: Autoconf
Submitted by: kloczek
Submitted on: Tue 15 Sep 2020 08:14:18 PM UTC
Category: None
Priority: 5 - Normal
Severity: 3 - Normal
  Status: None
 Privacy: Public
 Assigned to: None
Originator Email: 
 Open/Closed: Open
 Discussion Lock: Any
Operating System: None

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Details:

Looks like AC_PROG_LEX on testing is trying to link with liblex and on that it
fails when GNU flex is installed:

```
checking for flex... flex
checking for lex output file root... lex.yy
checking for lex library... not found
configure: error: required lex library not found
```
All because glu flex provides only libfl.

$ rpm -ql flex| grep lib64
/usr/lib64/libfl.a





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