[Octave-bug-tracker] [bug #55916] pdfTeX warnings in build: found PDF version <1.7>, but at most version <1.5> allowed

[Andrew Janke]

Follow-up Comment #10, bug #55916 (project octave):

> Can you run with 'make V=1' so that we can see the toolchain that is
creating the PDF files?

Here's a full `make V=1` build log file:
https://github.com/octave-app/octave-app/files/3015856/build-verbose-for-pdftex-warnings-01.log

Oddly enough, now I don't see the PDF version warnings. I don't recall making
any changes to my system aside from regular `brew upgrade`s.

> What version of gl2ps are you using?


$ brew info gl2ps
gl2ps: stable 1.4.0 (bottled)


Also, if you just create a file using Octave, what is the PDF level? 


[build] $ ./run-octave --eval 'sombrero; print -dpdf sombrero.pdf; exit'
[build] $ file sombrero.pdf
sombrero.pdf: PDF document, version 1.5
[build] $ pdfinfo sombrero.pdf
Producer:       GPL Ghostscript 9.23
CreationDate:   Wed Mar 27 21:31:20 2019 EDT
ModDate:        Wed Mar 27 21:31:20 2019 EDT
Tagged:         no
UserProperties: no
Suspects:       no
Form:           none
JavaScript:     no
Pages:          1
Encrypted:      no
Page size:      612 x 792 pts (letter)
Page rot:       0
File size:      279419 bytes
Optimized:      no
PDF version:    1.5
[build] $


And now my generated splinefit6.pdf is also PDF version 1.5.


$ pdfinfo doc/interpreter/splinefit6.pdf 
Producer:       GPL Ghostscript 9.23
CreationDate:   Wed Mar 27 21:18:46 2019 EDT
ModDate:        Wed Mar 27 21:18:46 2019 EDT
Tagged:         no
UserProperties: no
Suspects:       no
Form:           none
JavaScript:     no
Pages:          1
Encrypted:      no
Page size:      360 x 252 pts
Page rot:       0
File size:      2843 bytes
Optimized:      no
PDF version:    1.5


And I'm getting octave.pdf.


$ find . -name octave.pdf
./doc/interpreter/octave.pdf


This was done with the latest default code. Maybe something changed in the
Octave source?

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