Boost C++ Libraries: Ticket #8778: Building boost.log fails due to failure in date_time_format_parser

attachment set

benjamin@… — Thu, 04 Jul 2013 13:48:14 GMT

attachment → build_log.log

Build log

component changed; owner set

viboes — Sat, 12 Oct 2013 13:14:19 GMT

owner set to Andrey Semashev
component Building Boost → log

owner, component changed; cc set

Andrey Semashev — Sat, 12 Oct 2013 15:13:30 GMT

cc Andrey.Semashev@… added
owner changed from Andrey Semashev to Hartmut Kaiser
component log → spirit

I think the problem is in Boost.Spirit.Karma. Boost.Log uses karma::uint_generator< uint32_t >, but somehow absolute_value< long double > gets instantiated. Apparently, Boost.Math doesn't support long double on Cygwin (and defines BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS, which should be checked for by Boost.Spirit), which results in the build failure.

I think, preliminary fix would be checking for BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS in Bost.Spirit and fallback to the generic code based on fabs. But it is not clear to me why absolute_value< long double > is used in the first place. Maybe this is a sign of a deeper problem. I'm reassigning this ticket to Boost.Spirit.

status changed; resolution set

Joel de Guzman — Sun, 14 Mar 2021 19:50:56 GMT

status new → closed
resolution → wontfix

since #648 https://github.com/boostorg/spirit/pull/648 (will be in boost-1.76) we no longer use Boost.Math