Re: MacOS 64-bit build

[Erlend Aasland]

(Sorry, 'bout incorrect quote level in previous email!)

E 

> On 9 Jan 2020, at 13:00, Erlend Aasland <address@hidden> wrote:
> 
>> On 13 Feb 2019, at 20:16, Daniel Johnson <address@hidden> wrote:
>> 
>> I am using guile 1.8.8, gcc 7.4.0, and flex 2.6.4.  Here's my configure line:
>> 
>> On build, I get a long string of errors originating in 
>> out/lexer.cc<http://lexer.cc>:
>> 
>> out/lexer.cc:6272<http://lexer.cc:6272>:46: error: cannot convert 
>> 'std::istream {aka
>> std::basic_istream<char>}' to 'std::istream* {aka std::basic_istream<char>*}'
>> in assignment
>>    YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
> 
> Use flex 2.5.37, as the flex 2.6.* C++ lexer is broken (discussed on the Bison
> lists): a stream pointer has been changed in the declaration to a reference
> without doing it in the code. Reported some years ago on the flex list.
> 
> `configure` should warn or bail on incompatible flex versions. I suggest we 
> add a version check in configure.ac to ensure that flex version is between 
> 2.5.37 and 2.5.39 (given that 2.5.38 and 2.5.39 actually works).
> 
> 
> 
> Erlend E. Aasland