[jira] Updated: (THRIFT-865) C++ compiler build depends on libfl even when flex/lex not detected

["David Reiss (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/THRIFT-865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Reiss updated THRIFT-865:
-------------------------------

    Attachment: v4-0014-THRIFT-865.-Make-Thrift-buildable-without-libfl.patch

> C++ compiler build depends on libfl even when flex/lex not detected
> -------------------------------------------------------------------
>
>                 Key: THRIFT-865
>                 URL: https://issues.apache.org/jira/browse/THRIFT-865
>             Project: Thrift
>          Issue Type: Bug
>          Components: C++ - Compiler
>    Affects Versions: 0.4
>         Environment: Linux ubuntu 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 06:07:29 UTC 2010 i686 GNU/Linux
>            Reporter: Carl Steinbach
>         Attachments: v4-0014-THRIFT-865.-Make-Thrift-buildable-without-libfl.patch
>
>
> I tried building the thrift 0.4.0 tarball on an Ubuntu machine that does not have Flex installed:
> {code}
> % ./configure
> ...
> checking for bison... no
> checking for byacc... no
> checking for flex... no
> checking for lex... no
> ...
> % make && make install
> ...
> libtool: link: g++ -Wall -I./src -I/usr/include -g -O2 -Wall -o thrift thrift-thrifty.o thrift-thriftl.o thrift-main.o md5.o thrift-t_generator.o 
> thrift-t_cpp_generator.o thrift-t_java_generator.o thrift-t_as3_generator.o thrift-t_csharp_generator.o thrift-t_py_generator.o 
> thrift-t_rb_generator.o thrift-t_perl_generator.o thrift-t_php_generator.o thrift-t_erl_generator.o thrift-t_cocoa_generator.o 
> thrift-t_st_generator.o thrift-t_ocaml_generator.o thrift-t_hs_generator.o thrift-t_xsd_generator.o thrift-t_html_generator.o 
> thrift-t_js_generator.o  -L/usr/lib -lrt -lpthread
> thrift-thriftl.o: In function `yyinput':
> /home/carl/tmp/thrift-0.4.0/compiler/cpp/thriftl.cc:2947: undefined reference to `yywrap'
> thrift-thriftl.o: In function `yylex()':
> /home/carl/tmp/thrift-0.4.0/compiler/cpp/thriftl.cc:2642: undefined reference to `yywrap'
> collect2: ld returned 1 exit status
> make[3]: *** [thrift] Error 1
> make[3]: Leaving directory `/home/carl/tmp/thrift-0.4.0/compiler/cpp'
> make[2]: *** [all] Error 2
> make[2]: Leaving directory `/home/carl/tmp/thrift-0.4.0/compiler/cpp'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/home/carl/tmp/thrift-0.4.0'
> make: *** [all] Error 2
> %
> {code}
> Relevant: http://stackoverflow.com/questions/1811125/undefined-reference-to-yywrap
> Looks like the relevant token in compiler/cpp/thriftl.cc is YY_SKIP_YYWRAP.

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