Build Octave with GUI

[Thomas D. Dean]

I am attempting to build octave with a gui.  From searching the web, I 
think building with QT5 is not possible at this time.  I attempted to 
build with QT4.  It seemed to work.  But, executing src/octave-gui 
results in a CLI version.  The files, src/octave-cli and -gui are 
different, but, both seem to execute a -cli version.

Does the warning about OpenGL mean that the -gui version will not work?

Ubuntu 18.04
Octave from HG sources.

> cd octave-code
> hg pull
> hg update
> make distclean
> ./configure F77=gfortran --with-qt=4
...
  Build Octave Qt GUI:                  yes (version: 4)
  JIT compiler for loops:               no
  Build Java interface:                 yes
  Build static libraries:               no
  Build shared libraries:               yes
  Dynamic Linking API:                  dlopen
  Include support for GNU readline:     yes
  64-bit array dims and indexing:       yes
  64-bit BLAS array dims and indexing:  no
  OpenMP SMP multithreading:            yes
  Truncate intermediate FP results:     yes
  Build cross tools:                    no
  Build docs:                           yes
configure: WARNING: Qt does not work with the OpenGL libs (GL and GLU);\
    disabling OpenGL graphics with Qt GUI
configure: WARNING: SUNDIALS NVECTOR serial library not found.\
    Solvers ode15i and ode15s will be disabled.
configure: WARNING: SUNDIALS IDA library not found.\
    Solvers ode15i and ode15s will be disabled.
configure: WARNING: JAVA_HOME environment variable not initialized.\
    Auto-detection will proceed but is unreliable.
configure:
configure: NOTE: Libraries or auxiliary programs may be skipped if\
    they are not found OR if they are missing required features on your 
system.
> make
...
Octave successfully built.  Now choose from the following:

   ./run-octave    - to run in place to test before installing
   make check      - to run the tests
   make install    - to install (PREFIX=/usr/local)

   HG ID for this build is "11bf2c815469"
> make check
...
Summary:
  PASS                            15472
  FAIL                                0
  XFAIL (reported bug)               28
  SKIP (missing feature)            126
  SKIP (run-time condition)          23
See the file /home/tomdean/Math/Octave/octave-code/test/fntests.log
for additional details.

Tom Dean