Em Thu, 25 Aug 2016 15:03:16 +0200
Markus Heiser <[email protected]> escreveu:
> Hi Jon, Mauro, Jani,
>
> today I tested imgmath, it worked well, but needs an
> additional dvipng installation ...
>
> What do you think, should we document the prerequisites
> on different linux distributions to build documentation
> with sphinx.ext.imgmath and PDF output?
>
> What I mean, in the meantime we have two PDF applications,
> the imgmath uses "latex" (plus dvipng) and the PDF output
> uses "xetex".
>
> I tested on a ubuntu 16.04 sandbox, so my experience is,
> on a debian based system it should be enough to install
> *base*, *xetex* and *recommended* -TeX packages, the
> imgmath extensions needs an additional dvipng package::
>
> sudo apt-get install \
> dvipng texlive-base texlive-xetex \
> texlive-latex-recommended
>
> Jon and Mauro made there own experience with fedora, where
> the installation procedure seems much more complex.
>
> Might it be good, to document these experiences, to preserve
> your experience?
Yes, IMHO we should document it somehow. What I do when I want to check the
minimum amount of packages to be installed is to create a LXC image
using the lxc-create scripts. This way, we can be sure that the
environment will be the bare minimum one.
On such environment, before the math extension, I had to install
those packages on Ubuntu Xenial, and on Debian Jessie, in order to
build the docs:
texlive-xetex python3-sphinx python3-sphinx-rtd-theme ttf-dejavu make
gcc python3-sphinx-rtd-theme
As the environment is the bare minimum, you'll notice that it also
required "make".
I didn't track the minimal requirements for Fedora, but I had to
install those patchages on my Fedora 24 server yesterday, for it to build
for PDF:
texlive-amsmath.noarch texlive-mathtools.noarch
texlive-anyfontsize.noarch texlive-xelatex
texlive-xetex texlive-xecolor.noarch
texlive-titlesec.noarch texlive-framed texlive-threeparttable
texlive-wrapfig texlive-upquote texlive-capt-of eqparbox
With regards to documenting it, I would actually prefer to write a
shell or perl script (as it should require a bare minimum environment,
I would not write it in Python) that would be downloading what's needed,
based on the distribution type. I wrote one such script to allow building
the media drivers out of the tree:
https://git.linuxtv.org/media_build.git/tree/build
It checks for the type of distribution using this logic:
$system_release = qx(lsb_release -d) if which("lsb_release");
$system_release =~ s/Description:\s*// if ($system_release);
$system_release = catcheck("/etc/system-release") if !$system_release;
$system_release = catcheck("/etc/redhat-release") if !$system_release;
$system_release = catcheck("/etc/lsb-release") if !$system_release;
$system_release = catcheck("/etc/gentoo-release") if !$system_release;
$system_release = catcheck("/etc/issue") if !$system_release;
$system_release =~ s/\s+$//;
and checks if the prereqs are available. If not, it displays a hint
with the distro-specific command needed to install the dependencies:
sub need_program($)
{
my $prog = shift;
return if findprog($prog);
push @missing, $prog;
$need++;
}
need_program "make";
...
give_hints if ($need);
die "Build can't procceed as $need dependency is missing" if ($need ==
1);
die "Build can't procceed as $need dependencies are missing" if ($need);
The give_hints use the system_release to print the required needs:
sub give_hints()
{
# Distro-specific hints
if ($system_release =~ /Red Hat Enterprise Linux/) {
give_redhat_hints;
return;
}
...
}
sub give_redhat_hints()
{
my $install;
my %map = (
"wget" => "wget",
"lsdiff" => "patchutils",
"Digest::SHA" => "perl-Digest-SHA",
"Proc::ProcessTable" => "perl-Proc-ProcessTable",
);
foreach my $prog (@missing) {
print "ERROR: please install \"$prog\", otherwise,
build won't work.\n";
if (defined($map{$prog})) {
$install .= " " . $map{$prog};
} else {
$install .= " " . $prog;
}
}
printf("You should run:\n\tyum install -y $install\n");
}
Thanks,
Mauro
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