I have opened #28688 to fix buckygen.

On Sat, 2 Nov 2019, 11:58 Nico Van Cleemput, <nico.vancleem...@gmail.com>
wrote:

> Yes, I was actually also looking at it just this morning. It's been a
> while since I did any Sage development, but I'll try to fix this. Will
> first have to reread how the packages work these days.
>
> Nico
>
> Op za 2 nov. 2019 om 10:50 schreef David Coudert <david.coud...@inria.fr>:
>
>> File splay.c has changed in nauty (at least in 26r12). The main
>> difference is
>>
>> - static SPLAYNODE*
>> - SPLAY_DELETE(SPLAYNODE **to_root, SPLAYNODE *p)
>> + void
>> + SPLAY_DELETE(SPLAYNODE **to_root, SPLAYNODE *p)
>>
>> With this change, I can do gcc -O3 -std=c89 buckygen.c -o buckygen
>>
>> So upstream must be updated.
>>
>>
>> Le mardi 29 octobre 2019 11:56:12 UTC+1, nvcleemp a écrit :
>>>
>>> OK, the answer is below:
>>>
>>> The file splay.c is actually taken from Nauty, so that issue should be
>>> resolved there. The most obvious solution is to not compile this as C99,
>>> but as C89 since that is what buckygen was written in.
>>>
>>> So, I can mail this to Brendan McKay to ask to solve this, but since
>>> Nauty is already in Sage the issue should already be resolved in that code,
>>> so we could also just take splay.c from there.
>>>
>>> Nico
>>>
>>> Op di 29 okt. 2019 om 09:31 schreef Nico Van Cleemput <
>>> nico.va...@gmail.com>:
>>>
>>>> Well, upstream sits at another desk in my office, so I will ask when he
>>>> gets in.
>>>>
>>>> Nico
>>>>
>>>> Op di 29 okt. 2019 09:29 schreef Dima Pasechnik <dim...@gmail.com>:
>>>>
>>>>> clang is unhappy about C standards violations. E.g. this is what I get
>>>>> with clang 7:
>>>>>
>>>>> cc -O4 buckygen.c -o buckygen
>>>>> cc: warning: -O4 is equivalent to -O3 [-Wdeprecated]
>>>>> In file included from buckygen.c:272:
>>>>> ./splay.c:139:6: warning: implicit declaration of function
>>>>> 'outputnode' is invalid in C99 [-Wimplicit-function-declaration]
>>>>>             ACTION(p);
>>>>>             ^
>>>>> buckygen.c:254:19: note: expanded from macro 'ACTION'
>>>>> #define ACTION(p) outputnode(p)
>>>>>                   ^
>>>>> In file included from buckygen.c:272:
>>>>> ./splay.c:263:15: warning: implicit declaration of function
>>>>> 'comparenodes' is invalid in C99 [-Wimplicit-function-declaration]
>>>>>         cmp = COMPARE(p);
>>>>>               ^
>>>>> buckygen.c:260:20: note: expanded from macro 'COMPARE'
>>>>> #define COMPARE(p) comparenodes(canong, codelength, type, p)
>>>>>                    ^
>>>>> In file included from buckygen.c:272:
>>>>> ./splay.c:328:15: warning: implicit declaration of function
>>>>> 'comparenodes' is invalid in C99 [-Wimplicit-function-declaration]
>>>>>         cmp = COMPARE(p);
>>>>>               ^
>>>>> buckygen.c:260:20: note: expanded from macro 'COMPARE'
>>>>> #define COMPARE(p) comparenodes(canong, codelength, type, p)
>>>>>                    ^
>>>>> In file included from buckygen.c:272:
>>>>> ./splay.c:352:20: error: non-void function 'splay_delete' should
>>>>> return a value [-Wreturn-type]
>>>>>     if (p == NULL) return;
>>>>>                    ^
>>>>> ./splay.c:366:2: error: non-void function 'splay_delete' should return
>>>>> a value [-Wreturn-type]
>>>>>         return;
>>>>>         ^
>>>>> ./splay.c:376:9: error: non-void function 'splay_delete' should return
>>>>> a value [-Wreturn-type]
>>>>>         return;
>>>>>         ^
>>>>> buckygen.c:943:1: warning: type specifier missing, defaults to 'int'
>>>>> [-Wimplicit-int]
>>>>> outputnode(SPLAYNODE *liste)
>>>>> ^
>>>>> 4 warnings and 3 errors generated.
>>>>> make: *** [makefile:12: buckygen] Error 1
>>>>>
>>>>> Easy to fix, I'd say - can this be done upstream?
>>>>>
>>>>> On Tue, Oct 29, 2019 at 8:31 AM Nico Van Cleemput
>>>>> <nico.va...@gmail.com> wrote:
>>>>> >
>>>>> > buckygen is a pure C package, so I doubt that this has anything to
>>>>> do with the switch to Python 3. Do you have any more information about the
>>>>> fail build, because here it built fine.
>>>>> >
>>>>> > Nico
>>>>> >
>>>>> > Op ma 28 okt. 2019 om 23:02 schreef John H Palmieri <
>>>>> jhpalm...@gmail.com>:
>>>>> >>
>>>>> >> With a Python 3 build of Sage on OS X 10.14.6, I decided to install
>>>>> as many optional and experimental packages as I could. The results:
>>>>> >>
>>>>> >> Optional:
>>>>> >>
>>>>> >> - the following packages failed to build, and the reason wasn't
>>>>> completely obvious:
>>>>> >>
>>>>> >> awali
>>>>> >> buckygen
>>>>> >> cbc
>>>>> >> gambit
>>>>> >> gdb
>>>>> >> mpi4py
>>>>> >>
>>>>> >> - the following packages failed because they (or their installation
>>>>> scripts) are not compatible with Python 3:
>>>>> >>
>>>>> >> beautifulsoup
>>>>> >> brian
>>>>> >> guppy
>>>>> >> mercurial
>>>>> >> p_group_cohomology (but work is in progress)
>>>>> >> pyx
>>>>> >> scons
>>>>> >> trac
>>>>> >>
>>>>> >> - the following packages failed at first, but built after
>>>>> installing some prerequisities:
>>>>> >>
>>>>> >> deformation — requires installation of mpir
>>>>> >> dot2tex — requires Graphviz
>>>>> >> rst2ipynb — requires pandoc
>>>>> >>
>>>>> >> - I skipped the following packages:
>>>>> >>
>>>>> >> atlas (installation is skipped on OS X)
>>>>> >> python2 (I wanted to use a pure Python 3 build)
>>>>> >>
>>>>> >> - Every other optional package built.
>>>>> >>
>>>>> >> Question/Proposal: do we demote the failed packages to
>>>>> experimental? (Not deformation, dot2tex, or rst2ipynb, also not
>>>>> p_group_cohomology because it is just about ready for py3, but the 
>>>>> others.)
>>>>> I plan to do this unless there are objections.
>>>>> >>
>>>>> >>
>>>>> >> Experimental:
>>>>> >>
>>>>> >> - the following failed to build:
>>>>> >>
>>>>> >> autotools
>>>>> >> cocoalib
>>>>> >> libtheora
>>>>> >> polymake
>>>>> >> qepcad
>>>>> >> scipoptsuite
>>>>> >> surf
>>>>> >> valgrind
>>>>> >>
>>>>> >> - the following succeeded:
>>>>> >>
>>>>> >> gap3
>>>>> >> lie
>>>>> >> modular_decomposition
>>>>> >> perl_term_readline_gnu
>>>>> >>
>>>>> >> polymake succeeded but only after installing the perl JSON package.
>>>>> (Why is jupymake optional and polymake experimental? jupymake has polymake
>>>>> as a dependency, and optional packages should not depend on experimental
>>>>> packages.)
>>>>> >>
>>>>> >> - I skipped the following:
>>>>> >>
>>>>> >> compilerwrapper — when I install this, it breaks the Sage library:
>>>>> after touching any .pyx file, "sage -b" or "make" fails with an error 
>>>>> about
>>>>> ld.
>>>>> >>
>>>>> >>
>>>>> >> Doctesting:
>>>>> >>
>>>>> >> Then I ran `make ptestalllong`. There were lots of "internet"
>>>>> failures. Otherwise:
>>>>> >>
>>>>> >> - failures in one file because of rst2ipynb
>>>>> >> - failures in two files because of dot2tex
>>>>> >> - failures in one file because of latex
>>>>> >> - failures in one file because of gap_packages (reported by
>>>>> Emmanuel Charpentier on sage-release many times)
>>>>> >>
>>>>> >> Other than the internet problems, not too bad.
>>>>> >>
>>>>> >> --
>>>>> >> John
>>>>> >>
>>>>> >> --
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>>>>>
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