Hello,
Have you tried to access the maxima documentation with sage -maxima:
>From maxima doc:
At the interactive prompt, ? foo (with a space between ? and foo) is
equivalent to describe("foo", exact), and ?? foo is equivalent to
describe("foo",
inexact).
describe("", inexact) yields a list of all topics documented in the on-line
manual.
describe quotes its argument. describe returns true if some documentation
is found, otherwise false.
See also Documentation
<https://maths.cnam.fr/Membres/wilk/MathMax/help/Maxima/maxima_3.html#SEC7>.
Example:
(%i1) ?? integ
0: Functions and Variables for Elliptic Integrals
1: Functions and Variables for Integration
2: Introduction to Elliptic Functions and Integrals
3: Introduction to Integration
4: askinteger (Functions and Variables for Simplification)
5: integerp (Functions and Variables for Miscellaneous Options)
6: integer_partitions (Functions and Variables for Sets)
7: integrate (Functions and Variables for Integration)
8: integrate_use_rootsof (Functions and Variables for
Integration)
9: integration_constant_counter (Functions and Variables for
Integration)
10: nonnegintegerp (Functions and Variables for linearalgebra)
Enter space-separated numbers, `all' or `none': 7 8
-- Function: integrate (<expr>, <x>)
-- Function: integrate (<expr>, <x>, <a>, <b>)
Attempts to symbolically compute the integral of <expr> with
respect to <x>. `integrate (<expr>, <x>)' is an indefinite
integral, while `integrate (<expr>, <x>, <a>, <b>)' is a
definite integral, [...]
-- Option variable: integrate_use_rootsof
Default value: `false'
When `integrate_use_rootsof' is `true' and the denominator of
a rational function cannot be factored, `integrate' returns
the integral in a form which is a sum over the roots (not yet
known) of the denominator.
[...]
I may be wrong but it seems that your maxima documentation was not
installed. Or is not usable using: ./sage
Greg
Le lun. 5 janv. 2026, 10:03, Eric Gourgoulhon <[email protected]> a
écrit :
> PS: running Maxima standalone, via "sage -maxima" works:
>
> ./sage -maxima
> ;;; Loading
> #P"/home/eric/sage/10.9/local/lib/ecl-24.5.10/sb-bsd-sockets.fas"
> ;;; Loading #P"/home/eric/sage/10.9/local/lib/ecl-24.5.10/sockets.fas"
> Maxima 5.47.0 https://maxima.sourceforge.io
> using Lisp ECL 24.5.10
> Distributed under the GNU Public License. See the file COPYING.
> Dedicated to the memory of William Schelter.
> The function bug_report() provides bug reporting information.
> (%i1) diff(cos(x), x);
> (%o1) - sin(x)
>
> So the issue is probably at the interface between Sage and Maxima.
> Not surprisingly, the test
> ./sage -t src/sage/interfaces/maxima.py
> fails with many errors.
>
> Le lundi 5 janvier 2026 à 09:03:22 UTC+1, Eric Gourgoulhon a écrit :
>
>> Hi,
>>
>> I've installed Sage 10.9.beta1 from a fresh git clone on Ubuntu 24.04
>> (without any system Maxima preinstalled), via
>>
>> make configure
>> ./configure --enable-download-from-upstream-url
>> MAKE="make -j8" make
>>
>> The built was successful, but when I run
>> sage: x.simplify()
>> I get:
>> ;;; Warning: Maxima is unable to set up the help system.
>> (Details: CL-INFO::LOAD-PRIMARY-INDEX: Cannot open
>> #P"/usr/local/share/info/maxima-index.lisp".
>> C library error: No such file or directory)
>>
>> ;;; Warning: Maxima is unable to set up the help system.
>> (Details: CL-INFO::LOAD-PRIMARY-INDEX: Cannot open
>> #P"/usr/local/share/info/maxima-index-html.lisp".
>> C library error: No such file or directory)
>>
>>
>> ---------------------------------------------------------------------------
>> RuntimeError Traceback (most recent call
>> last)
>> Cell In[1], line 1
>> ----> 1 x.simplify()
>>
>> File sage/symbolic/expression.pyx:10567, in
>> sage.symbolic.expression.Expression.simplify()
>>
>> File sage/symbolic/expression.pyx:1147, in
>> sage.symbolic.expression.Expression._maxima_()
>>
>> File sage/structure/sage_object.pyx:711, in
>> sage.structure.sage_object.SageObject._interface_()
>>
>> File sage/misc/lazy_import.pyx:381, in
>> sage.misc.lazy_import.LazyImport.__getattr__()
>>
>> File sage/misc/lazy_import.pyx:231, in
>> sage.misc.lazy_import.LazyImport.get_object()
>>
>> File sage/misc/lazy_import.pyx:266, in
>> sage.misc.lazy_import.LazyImport._get_object()
>>
>> File ~/sage/10.9/src/sage/interfaces/maxima_lib.py:232
>> 230 init_code.append('nolabels : true')
>> 231 for l in init_code:
>> --> 232 ecl_eval("#$%s$" % l)
>> 233 # To get more debug information uncomment the next line
>> 234 # should allow to do this through a method
>> 235 # ecl_eval("(setf *standard-output* original-standard-output)")
>> 236
>> 237 # This is the main function (ECL object) used for evaluation
>> 238 # This returns an EclObject
>> 239 maxima_eval = ecl_eval("""
>> 240 (defun maxima-eval( form )
>> 241 (with-$error (meval form)))
>> 242 """)
>>
>> File sage/libs/ecl.pyx:1334, in sage.libs.ecl.ecl_eval()
>>
>> File sage/libs/ecl.pyx:1361, in sage.libs.ecl.ecl_eval()
>>
>> File sage/libs/ecl.pyx:1357, in sage.libs.ecl.ecl_eval()
>>
>> File sage/libs/ecl.pyx:324, in sage.libs.ecl.ecl_safe_eval()
>>
>> RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT is undefined.
>> while evaluating #$load(abs_integrate)$
>>
>> On the same computer, there was no such issue with Sage 10.8, built from
>> source via the same procedure. I am attaching the Maxima build log, which
>> looks very similar to that of the Sage 10.8 installation, as well as the
>> output of configure.
>> Note that I've not installed the Ubuntu package "maxima" in order to
>> benefit from a more recent version (5.47 versus 5.46 for Ubuntu package).
>> Am I the only one experiencing this?
>>
>> Eric.
>>
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