[Octave-bug-tracker] [bug #55225] building doc figures in .eps or .pdf format occasionally silently fails

[Mike Miller]

Follow-up Comment #20, bug #55225 (project octave):

This bug still affects me. Right now, this is very highly reproducible for me,
and it seems highly correlated to building with "make -jN". However, I am
still sometimes able to reproduce this with serial "make -j1".

Here are some examples from my current build tree, using a sampling of image
files that happened to fail to build for me:


## parallel build

$ rm -f doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
$ make -j8 doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
  GEN      doc/interpreter/convhull.eps
  GEN      doc/interpreter/errorbar.eps
  GEN      doc/interpreter/hist.eps
  GEN      doc/interpreter/mesh.eps
  GEN      doc/interpreter/polar.eps
$ ls -l doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
ls: cannot access 'doc/interpreter/errorbar.eps': No such file or directory
ls: cannot access 'doc/interpreter/mesh.eps': No such file or directory
ls: cannot access 'doc/interpreter/polar.eps': No such file or directory
-rw-r--r-- 1 mike mike 17553 Oct 16 11:29 doc/interpreter/convhull.eps
-rw-r--r-- 1 mike mike 13134 Oct 16 11:29 doc/interpreter/hist.eps

## serial build

$ rm -f doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
$ make -j1 doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
  GEN      doc/interpreter/convhull.eps
  GEN      doc/interpreter/errorbar.eps
  GEN      doc/interpreter/hist.eps
  GEN      doc/interpreter/mesh.eps
  GEN      doc/interpreter/polar.eps
$ ls -l doc/interpreter/{convhull,errorbar,hist,mesh,polar}.eps
ls: cannot access 'doc/interpreter/errorbar.eps': No such file or directory
-rw-r--r-- 1 mike mike  17553 Oct 16 11:31 doc/interpreter/convhull.eps
-rw-r--r-- 1 mike mike  13134 Oct 16 11:31 doc/interpreter/hist.eps
-rw-r--r-- 1 mike mike 839976 Oct 16 11:31 doc/interpreter/mesh.eps
-rw-r--r-- 1 mike mike  19259 Oct 16 11:31 doc/interpreter/polar.eps



As you can see, Octave does not report an error when the command fails to
produce a .eps file, and it exits with success, so there is no indication to
make that anything failed. The error is caught later when octave.dvi fails to
build.

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