Arch Linux

Description:
In libfl, main calls yylex() while yywrap() was defined independently. Static libraries allowed the following autoconf-generated code to link with -fl.

char yywrap ();
int main ()
{
yywrap ();
return 0;
}

It also allowed -lfl to be added when not explicitly used (common in configure scripts that expand a LIBS variable). Now with shared libraries, -lfl cannot be used if yylex() is not defined. This can be worked around in packages like c2html by explicitly passing LEXLIB=-lfl (which suppresses the test), but I don't know if this side-effect was known.

I have asked on the flex-users mailing list, but I'm adding this ticket to clarify the issue if someone else stumbles upon it, and in case Arch would like to do something to mitigate this issue.

Additional info:
* flex-2.5.38-1