I removed the folder where I had installed gap (in ~/Downloads) and installed 
your pre-built copy Gapdotapp+GAP.

However, when I open Terminal and execute command 

        gap

nothing seems to happen.

What’s wrong?

> On 9 Dec2020, at 2:28 AM, Russ Woodroofe <r...@cornell.edu> wrote:
> 
> 
> 
> Dear Murray,
> Different underlying causes.  Guava I understand has not been updated for 
> some time, and is fragile with modern compilers and libraries.  Xgap requires 
> X11 libraries.  CddInterface and NormalizInterface seem (to me) to be tricky 
> to build, with quite a few requirements etc.  Not sure offhand about anupq or 
> semigroups.
> 
> Are you likely to need any of the given packages?  If not, I wouldn't worry 
> about it.
> 
> You might also be interested in my distribution/frontend Gap.app, which 
> includes a pre-built copy of GAP 4.11.0, along with most of the packages, 
> including semigroups, guava, and anupq.  (The included copy doesn't yet run 
> on M1-based machines, however.)  See
> https://cocoagap.sourceforge.io/ <https://cocoagap.sourceforge.io/>
> 
> But it sounds like you already have managed a functioning GAP installation, 
> if you're down to building packages.
> Best,
> 
>  --Russ
> 
>> On 9 Dec 2020, at 02:52, Murray Eisenberg <mur...@math.umass.edu 
>> <mailto:mur...@math.umass.edu>> wrote:
>> 
>> I’m trying to get GAP 4.11.0 installed uner macOS Catalina 10.15.7 but am 
>> getting several packages seeming to complete their configuration OK but then 
>> failing to build:
>> 
>> CddInterface-2020.01.01
>> xgap-4.30
>> semigroups-3.2.3
>> NormalizInterface-1.1.0
>> guava-3.15
>> anupq-3.2.1
>> 
>> The errors seem to be for different reasons among the various packages. 
>> 
>> Is there some systematic, common problem here, rather than different 
>> underlying causes for the different packages?
>> 
>> Examples of the build errors:
>> 
>> CddInterface-2020.01.01
>> 
>>        CC       src/CddInterface_la-CddInterface.lo
>>      src/CddInterface.c:7:10: fatal error: setoper.h: No such file or 
>> directory
>>          7 | #include "setoper.h"
>>            |          ^~~~~~~~~~~
>> 
>> 
>> xgap-4.30: 
>> 
>>      gcc -I. -g -O2   -o xcmds.o -c ../../src.x11/xcmds.c
>>      In file included from ../../src.x11/xcmds.c:9:
>>      ../../src.x11/utils.h:130:13: fatal error: X11/X.h: No such file or 
>> directory
>>      130 | #include    <X11/X.h>                   /* X11 basic definition   
>>          */
>>            |             ^~~~~~~~~
>> 
>> 
>> semigroups-3.2.2: 
>> 
>>       363 |   format_arg arg(int id) const { return args_.get(id); }
>>            |                  ~~~~^~
>>      In file included from /opt/local/include/fmt/ostream.h:12,
>>                       from /opt/local/include/fmt/printf.h:14,
>>                       from 
>> /Users/me/Downloads/gap-4.11.0/pkg/semigroups-3.2.3/libsemigroups/include/libsemigroups-exception.hpp:32,
>>                       from 
>> /Users/me/Downloads/gap-4.11.0/pkg/semigroups-3.2.3/libsemigroups/include/runner.hpp:31,
>>                       from 
>> /Users/me/Downloads/gap-4.11.0/pkg/semigroups-3.2.3/libsemigroups/include/fpsemi-intf.hpp:40,
>>                       from 
>> /Users/me/Downloads/gap-4.11.0/pkg/semigroups-3.2.3/libsemigroups/include/cong-intf.hpp:29,
>>                       from 
>> /Users/me/Downloads/gap-4.11.0/pkg/semigroups-3.2.3/libsemigroups/include/cong-pair.hpp:77,
>>                       from src/cong-pair.cpp:19:
>>      /opt/local/include/fmt/format.h:2721:53: error: 'class 
>> fmt::v6::basic_printf_context<std::back_insert_iterator<fmt::v6::internal::buffer<char>
>>  >, char>' has no member named 'error_handler'
>>       2721 |                                                 
>> ctx.error_handler());
>>            |                                                 
>> ~~~~^~~~~~~~~~~~~
>> 
>> ——
>> Murray Eisenberg                                mur...@math.umass.edu 
>> <mailto:mur...@math.umass.edu> <mailto:mur...@math.umass.edu 
>> <mailto:mur...@math.umass.edu>>
>> Professor Emeritus
>> Mathematics & Statistics Dept.       
>> University of Massachusetts 
>> Amherst, MA USA
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Forum mailing list
>> Forum@gap-system.org <mailto:Forum@gap-system.org>
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>> <https://mail.gap-system.org/mailman/listinfo/forum>
——
Murray Eisenberg                                mur...@math.umass.edu 
<mailto:mur...@math.umass.edu>
Professor Emeritus
Mathematics & Statistics Dept.       
University of Massachusetts 
Amherst, MA USA





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