Hi Paul,
This patch series attempts to add alternative rules for
"eps --> pdf" conversion independent of a2ping.
Patches 1/6 and 2/6 are preparatory changes.
Patch 1/6 adds targets for cleaning/building figure files.
They are convenient for switching between two sets of rules.
Build time of figure files listed below are measured using the
new targets, namely cleanfigs-eps and figs:
make cleanfigs-eps; env time make -j4 figs
, and the baseline data corresponds to patch 1/6.
Patch 2/6 splits rules related to a2ping into a sub-makefile,
a2ping-rule.mk. No behavior change is expected at this point.
Patch 3/6 adds the alternative rules in epstopdf-rule.mk.
They combine "eps2eps" and "epstopdf" commands.
eps2eps belongs to the Ghostscript bundle.
It generates normalized eps format, with proper bounding-boxes.
epstopdf accepts a proper eps file and convert it to pdf using
Ghostscript.
Using them together gives mostly the same pdf images as a2ping does.
As a matter of fact, a2ping was inspired from an old version of
epstopdf back in 2003 or so.
Patches 4/6 -- 6/6 are minor improvements to reduce file size and
build time of those pdf files.
Build time comparisons at patches 1/6 and 6/6 are shown below.
They are measured in container images hosted on a Ubuntu 18.04
box. (Actual timing can be quite different on real systems.)
"focal" -- Ubuntu 20.04 (Ghostscript 9.50, distro TeX Live 2019/Debian,
no "NimbusSanL-Regu", with "NimbusSans-Regular")
"bionic" -- Ubuntu 18.04 (Ghostscript 9.26, distro TeX Live 2017/Debian
+ required up-to-date LaTeX packages)
"fedora" -- Fedora 34 (Ghostscript 9.54.0, distro TeX Live 2019,
no "NimbusSanl-Regu", with "NimbusSans-Regular")
"vanilla" -- Ubuntu 20.04 (Vanilla TeX Live 2021 as of Sep. 28, 2021,
Ghostscript 9.55.0 built from source,
no "NimbusSanL-Regu", with "NimbusSans-Regular")
Elapsed time of "make -j4 figs" after "make cleanfigs-eps":
Patch 1/6 Patch 6/6
------------ ---------------------
a2ping a2ping epstopdf
----------- ------------ ------------ --------
focal 0:41.77 0:40.19 0:24.56
bionic 0:39.30 0:38.42 0:22.47
fedora 0:41.63 0:40.09 0:23.30
vanilla 0:16.55 0:15.02 0:12.55
----------- ------------ ------------ --------
The lighter weight behavior of built-from-source Ghostscript is
likely due to the minimal config options I chose.
Anyway, the alternative rules are quicker on every container image
I have tested.
The alternative rules can be enabled by giving a "NO_A2PING=1" option
to "make", or by defining NO_A2PING as an environment variable.
I'll invert the conditional include and make "epstopdf-rule.mk" the
default choice once we are confident enough of the new rules.
Thanks, Akira
--
Akira Yokosawa (6):
Makefile: Add targets to build/clean figure files
Makefile: Split rules related to a2ping into a2ping-rule.mk
epstopdf-rule.mk: Add alternative rules for .eps --> .pdf conversion
epstopdf-rule.mk: Reduce converted pdf size
epstopdf-rule.mk: Save a 'cp' by running fixfonts script directly
Makefile: Don't run fixfonts on .eps with embedded font
Makefile | 85 ++++++++++++++----------------------------------
a2ping-rule.mk | 69 +++++++++++++++++++++++++++++++++++++++
epstopdf-rule.mk | 42 ++++++++++++++++++++++++
3 files changed, 136 insertions(+), 60 deletions(-)
create mode 100644 a2ping-rule.mk
create mode 100644 epstopdf-rule.mk
--
2.17.1
