On 7/16/20 12:42 PM, Ross Burton wrote:
checking for flex... flex
checking for lex output file root... lex.yy
checking for lex library... not found
configure: WARNING: required lex library not found; giving up on flex
...
configure: error: readline works only with flex.
Again, bc's scanner has its own yywrap implementation, so it doesn't
need to link to libfl.
In that case, why did 'configure' fail to build the little test program? The
test program also has its own yywrap implementation, so it should be just like
bc. 'configure' should successfully link the test program, set ac_cv_lib_lex to
'none needed', and break out of the loop, and the warning you mentioned should
not occur.
Are you using an old shell where 'ac_cv_lib_lex="${ac_lib:-none needed}' doesn't
work? That might explain the problem.
