Bug#887744: redeclipse FTBFS with glibc 2.26

[Martin Erik Werner]

On Tue, 2018-01-23 at 13:46 +0200, Juhani Numminen wrote:
> On Fri, 19 Jan 2018 17:58:06 +0200 Adrian Bunk <bunk at debian.org>
> wrote:
> > Source: redeclipse
> > ...
> > In file included from /usr/include/math.h:724:0,
> >                  from /usr/include/c++/7/cmath:45,
> >                  from /usr/include/c++/7/math.h:36,
> >                  from shared/cube.h:13,
> >                  from shared/crypto.cpp:1:
> > /usr/include/x86_64-linux-gnu/bits/math-finite.h: In function
> > 'double tgamma(double)':
> > /usr/include/x86_64-linux-gnu/bits/math-finite.h:203:21: error:
> > '____gamma_r_finite' was not declared in this scope
> >    _Mdouble_ __res = __REDIRTO (gamma, _r, _MSUF_) (__d,
> > &__local_signgam);
> >                      ^
> > /usr/include/x86_64-linux-gnu/bits/math-finite.h:203:21: note:
> > suggested alternative: '__gamma_r_finite'
> 
> The commit "remove gamma name hack" might be related, apparently
> there was some
> preprocessor hackery going on.
> https://github.com/red-eclipse/base/commit/b16b4963c1ad81bb9ef784bc49
> 13a4c8ab5f1bb4

Yep, applying this commit solves the issue.

Previously 'gamma' from math.h was masked in order to make it available
 to be defined by cubescript, and this masking was dependent on
implementation-specifics which had changed.

With this fix cubescript uses a different associated global name
'reqgamma' and thus does not need the masking.

-- 
Martin Erik Werner <martinerikwerner at gmail.com>