Re: New autoconf bitfcns test failing

[c.]

On 5 Jun 2012, at 17:56, Rik wrote:

> Carlo,
> 
> In the following changeset you added autoconf checking for templated bit
> functions like bit_and, bit_or, and bit_xor.
> 
> changeset:   14725:fa48fd0f160f
> user:        Carlo de Falco <address@hidden>
> date:        Tue Jun 05 07:39:46 2012 +0200
> summary:     Add configure check for templated bitwise operators.
> 
> Unfortunately, I now can't compile on a straight Linux distribution (Ubuntu
> 10.04).  I get the following errors when trying to compile src/bitfcns.cc
> 
> bitfcns.cc:51: error: redefinition of ‘struct std::bit_and<_Tp>’
> /usr/include/c++/4.4/bits/stl_function.h:293: error: previous definition of
> ‘struct std::bit_and<_Tp>’
> bitfcns.cc:58: error: redefinition of ‘struct std::bit_or<_Tp>’
> /usr/include/c++/4.4/bits/stl_function.h:301: error: previous definition of
> ‘struct std::bit_or<_Tp>’
> bitfcns.cc:65: error: redefinition of ‘struct std::bit_xor<_Tp>’
> /usr/include/c++/4.4/bits/stl_function.h:309: error: previous definition of
> ‘struct std::bit_xor<_Tp>’
> make[3]: *** [liboctinterp_la-bitfcns.lo] Error 1
> 
> If I look at config.h it shows that HAVE_CXX_BITWISE_OP_TEMPLATES is
> undefined so the templates get re-defined at the start of bitfcns.cc.  It
> looks like it must be something with the test program in acinclude.m4 which
> is returning the wrong result.
> 
> --Rik

Rik,
thanks for reporting this.
can you please also send me your config.log?
c.