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To enable easy/proper reproduction of results, all the high-level
dependencies are now built within the pipeline and installed in a fixed
directory that is added to the PATH of the Makefile. This includes GNU Bash
and GNU Make, which are then used to run the pipeline.
The `./configure' script will first build Bash and Make within itself, then
it will build
All the dependencies are also built to be static. So after they are built,
changing of the system's low-level libraries (like C library) won't change
the tarballs.
Currently the C library and C compiler aren't built within the pipeline,
but we'll hopefully add them to the build process also.
With this change, we now have full control of the shell and Make that will
be used in the pipeline, so we can safely remove some of the generalities
we had before.
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We had previously started the `configure' script with `/bin/bash'. But this
script is meant to check for Bash inside of it. So to be run-able (on a
system which may not have Bash), the `configure' script has to be run by
`/bin/sh'.
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Different implementations of AWK may use different random number
generators, so even setting the seed will not ensure a reproducible
result. Because of this, the random plot may be different when the
pipeline runs on different systems and this can confuse early users
(its contrary to the exact reproducibility that is the whole purpose
of this pipeline).
The plot is just a simple X^2 plot, showing the squared value of the X
axis on the Y axis. It is very simple, but atleast it will be
identical on all systems. Also, there may be too many complicated
things in the pipeline already for an early user, and its just a
demonstration, so the easier/simpler, the better.
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While we had set the default Makefile SHELL to be bash, we weren't
actually checking if `bash' is available on the system. With this
commit, it is also checked at configure time.
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Until now, the copyright statement was left empty for the users of the
pipeline to fill. However, the files have already been created and have an
author (or contributing authors) before the user starts using the
pipeline. So the original authors of the files are added along with the
year. The user can add their own name to the existing files under the
"Contributing author" when they start and they will be the "Original
author" of the new files they create.
Several changes were also made to the TeX management:
- LaTeX is run within a `reproduce/build/tex/build' directory now. Not in
the top reproduction pipeline directory. This helps keep all the
auxiliary TeX files and directories in that directory and keep the top
reproduction pipeline directory clean. After the final PDF is built, a
copy is put in the top reproduction pipeline directory for easy viewing.
- The PGFPlots preamble was also made more useful, allowing the name of
the `.tex' file to also be the name of the final plot that is
produced. This is a GREAT feature, because without it, the TiKZ
externalization would be based on order of the plots within the
paper. But now, order is irrelevant and we can even delete the TiKZ
files within the processing workhorse-Makefiles so the plots are
definitly rebuilt on the next run.
- The paper is now in a two-column format to be more similar to published
papers.
A tip on debugging Make was added to `README.md'.
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The mandatory and optional (for example downloader) dependencies are now
checked at configure time so users can know what they may be missing before
the processing starts. Since its recommended to be run in parallel, it can
be hard to find what you are missing after running the pipeline. As part of
these checks, the program to use for downloading is now also set at
configure time, it is only used as a pre-defined (in `LOCAL.mk') variable
during Make's processing.
A small title was also added to discus the pipeline architecture that will
be filled in the next commit.
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Some editors put a copy of their input file into another file ending with
`~' (for backup). So now, the `./configure' script also cleans this file
along with the temporary file.
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While trying the pipeline on a remote server (which runs on Debian), the
configure script had an `Syntax error: "(" unexpected' error. This is
caused by the fact that in the Debian world (and its derivate OSs), the
default shell is not Bash but Dash which has much fewer features for fast
loading. It was thus necessary to start the configure script explicity with
the `/bin/bash' shebang.
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As described in the commens above `MINMAPSIZE' of `LOCAL.mk.in', the amount
of memory to map to HDD/SSD or keep in RAM is a local issue and not
relevant to the pipeline's results. So it is now defined in a
`gnuastro-local.conf' file.
To keep the Makefiles clean, this file is created by the `./configure'
script. To do this cleanly, the `./configure' script was also almost fully
re-written with better functionality now.
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The previous change where we had set the building of the PDF as a local
(and thus not version controlled) setting was not good, because different
commits might be made without the high-level preparations for the final PDF
(especially during the initial/testing phases of a research). Therefore, if
the runner of the pipeline is ignorant to this, they may hit some errors in
LaTeX which can be frustrating.
To have a clean reproduction, it is thus necessary to have the choice of
pdf-building under version control along with the rest of the pipeline.
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The choice of whether or not to make a PDF is now also a local system
issue, not a general pipeline issue. So it has been put in the new
`LOCAL.mk.in' file which replaces the old `DIRECTORIES.mk.in'. All local
settings (things that when changed should not be version-controlled) should
be defined in this file.
A sanity check was added to find if `./configure' has been run before
`make' or not (using the `LOCAL.mk' file which is an output of the
configuration step). If `LOCAL.mk' doesn't exist, an error will be printed
informing the user that `./configure' needs to be run first.
The configure script also provides more clear and hopefully better
information on its purpose and what must be done.
Since `make clean', it is executed even when `./configure' hasn't been run,
it will only delete the build directory and its contents when local
configuration has been done.
A `distclean' target was also added which will first "clean" the pipeline,
then delete the `LOCAL.mk.in' file.
To allow rules like `make' to be run even if `BDIR' isn't defined
(`./configure' hasn't been run yet), a fake `BDIR' is defined in such
cases.
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Let's start working on this pipeline independently with this first
commit. It is based on my previous experiences, but I had never made a
skeleton of a pipeline before, it was always within a working analysis.
But now that the pipeline has a separate repository for its self, we will
be able to work on it and use it as a base for future work and modify it to
make it even better. Hopefully in time (and with the help of others), it
will grow and become much more robust and useful.
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