Broken yywrap()?

[rdratlos]

When using flex to develop packages, which rely on yywrap(), static library libl.a (linked to libfl.a) is required. Linking to yywrap() provided by shared library libfl.so is not possible.

Steps to reproduce:

• Extraxt attached test.zip
• Perform automake/autoconf

Result:

• without static lib:

checking for lex library... none needed
checking for library containing yywrap... no

• with static lib:

checking for lex library... none needed
checking for library containing yywrap... -ll

config.log contains following error if the static library is not available:

/usr/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/13.2.1/../../../../lib/libfl.so: undefined reference to `yylex'
collect2: error: ld returned 1 exit status

Is this a bug or a feature? Both, static and shared library provide function yywrap() but it seems to be broken in the shared lib.

Affected version: 2.6.4