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| author | Andrew Burgess <aburgess@redhat.com> | 2024-05-08 18:55:18 +0100 |
|---|---|---|
| committer | Andrew Burgess <aburgess@redhat.com> | 2024-06-24 12:13:57 +0100 |
| commit | f4aca14e5fbb1e60d1d2f38f1dc41e9292ba95d5 (patch) | |
| tree | 6d43be42492c4bc07e1ac63bb4f2520d3e16bf71 /ylwrap | |
| parent | f31b12c215571ee2348d20cd0cbc065ea631a765 (diff) | |
| download | binutils-f4aca14e5fbb1e60d1d2f38f1dc41e9292ba95d5.zip binutils-f4aca14e5fbb1e60d1d2f38f1dc41e9292ba95d5.tar.gz binutils-f4aca14e5fbb1e60d1d2f38f1dc41e9292ba95d5.tar.bz2 | |
gdb/doc: fix parallel build of refcard related targets
There are two problems we encounter when trying to build the refcard
related target in parallel, i.e.:
$ make -j20 -C gdb/doc/ refcard.dvi refcard.ps refcard.pdf
These problems are:
(1) The refcard.dvi and refcard.pdf targets both try and generate the
tmp.sed and sedref.tex files. If two make threads end up trying
to create these files at the same time then the result is these
files become corrupted.
I've fixed this by creating a new rule that creates sedref.tex,
both refcard.dvi and refcard.pdf now depend on this, and make will
build sedref.tex just once. The tmp.sed file is now generated as
refcard.sed, this is generated and deleted as a temporary file
within the sedref.tex recipe.
(2) Having created sedref.tex the recipes for refcard.dvi and
refcard.pdf both run various LaTeX based tools with sedref.tex as
the input file. The problem with this is that these tools all
rely on creating temporary files calls sedref.*.
If the refcard.dvi and refcard.pdf rules run at the same time then
these temporary files clash and overwrite each other causing the
build to fail.
We already copy the result file in order to rename it, our input
file is sedref.tex which results in an output file named
sedref.dvi or sedref.pdf, but we actually want refcard.dvi or
refcard.pdf. So within the recipe for refcard.dvi I copy the
input file from sedref.tex to sedref_dvi.tex. Now all the temp
files are named sedref_dvi.* and the output is sedref_dvi.dvi, I
then rename this new output file to refcard.dvi.
I've done the same thing for refcard.pdf, but I copy the input
to sedref_pdf.tex.
In this way the temp files no longer clash, and both recipes can
safely run in parallel.
After this commit I was able to reliably build all of the refcard
targets in parallel. There should be no change in the final file.
Approved-By: Tom Tromey <tom@tromey.com>
Diffstat (limited to 'ylwrap')
0 files changed, 0 insertions, 0 deletions