Re: [Boost-users] [math] boost build error: ::log1pl has notbeendeclared

Subject: Re: [Boost-users] [math] boost build error: ::log1pl has notbeendeclared
From: Pfligersdorffer, Christian (Christian.Pfligersdorffer_at_[hidden])
Date: 2008-09-24 08:57:09

Hi John,

you wrote on Wednesday, September 24, 2008 1:02 PM:

> Pfligersdorffer, Christian wrote:
>>> Hello all,
>>> 
>>> cross compiling boost 1.36 for power pc using a gcc-4.0 derivative
>>> the math library ends up with the following error:
>>> 
>>> ./boost/math/special_functions/log1p.hpp: In function 'long double
>>> boost::math::log1p(long double, const Policy&)':
>>> ./boost/math/special_functions/log1p.hpp:342: error: '::log1pl' has
>>> not been declared
> 
> Strange, Linux should have a ::log1p in math.h?

log1p is there, it's the long double version log1pl that's missing with
my cmath implementation. However boost::math thinks it should be
there... maybe BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS must be set on
my platform?

> What compiler settings are you using - is there anything that
> enables/suppresses this definition in math.h?
> 
> Otherwise possible solutions are:
> 
> 1) change the line in log1p.hpp that reads #ifdef
> BOOST_HAS_LOG1P to #if 0
> 2) create a custom config header following the instructions here:
> http://www.boost.org/doc/libs/1_36_0/libs/config/doc/html/inde
> x.html#boost_config.configuring_boost_for_your_platform.using_
> the_configure_script 
> 
> However, if you can help me find the proper fix so this works
> "out the box", that would be great.

I'll try my best!

-- 
Christian Pfligersdorffer
Software Engineering
http://www.eos.info