system-requirements.rst: add dependencies for pdf builds

With the recent changes from commit
bd6265ca323fac547a197bb516dc4a9ef3897508 ("doc: Makefile: add support
for xelatex"), the list of dependencies needs to be updated.

The initial list of dependencies was made for Ubuntu/Debian, and the
packages were translated for the other distros using pkgs.org.

Add them separately from the rest of the dependencies as they pull a
_lot_ of additional dependencies (for LaTeX).

Move the texlive-fncychap documentation dependency to the PDF specific
dependency.

Notes:
- Fedora/OpenSUSE do not have the "lang-all" texlive collection, so
  install all available languages.
- AlmaLinux does not seem to provide texlive-collection-fontsextra,
  texlive-collection-lang*, and texlive-collection-latexextra, so add a
  warning about that.

(From yocto-docs rev: 804240fa86fee63d0d2dd029d941cf14b23bd730)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit 02c090718ac602f7d4760dd28dadbf0631668d49)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

documentation/poky.yaml.in

@@ -68,7 +68,17 @@ UBUNTU_DEBIAN_HOST_PACKAGES_DOC: >-
   python3-saneyaml
   python3-sphinx-rtd-theme
   sphinx
+
+UBUNTU_DEBIAN_HOST_PACKAGES_DOC_PDF: >-
+  fonts-freefont-otf
+  latexmk
+  tex-gyre
+  texlive-fonts-extra
+  texlive-fonts-recommended
+  texlive-lang-all
   texlive-latex-extra
+  texlive-latex-recommended
+  texlive-xetex
 
 FEDORA_HOST_PACKAGES_ESSENTIAL: >-
   bzip2
@@ -123,9 +133,22 @@ FEDORA_HOST_PACKAGES_DOC: >-
   librsvg2-tools
   make
   python3-pip
-  texlive-fncychap
   which
 
+FEDORA_HOST_PACKAGES_DOC_PDF: >-
+  'texlive-collection-lang*'
+  latexmk
+  texlive-collection-fontsextra
+  texlive-collection-fontsrecommended
+  texlive-collection-latex
+  texlive-collection-latexextra
+  texlive-collection-latexrecommended
+  texlive-collection-xetex
+  texlive-fncychap
+  texlive-gnu-freefont
+  texlive-tex-gyre
+  texlive-xetex
+
 OPENSUSE_HOST_PACKAGES_ESSENTIAL: >-
   bzip2
   chrpath
@@ -164,9 +187,22 @@ OPENSUSE_HOST_PACKAGES_DOC: >-
   make
   python3-pip
   rsvg-convert
-  texlive-fncychap
   which
 
+OPENSUSE_HOST_PACKAGES_DOC_PDF: >-
+  'texlive-collection-lang*'
+  texlive-collection-fontsextra
+  texlive-collection-fontsrecommended
+  texlive-collection-latex
+  texlive-collection-latexextra
+  texlive-collection-latexrecommended
+  texlive-collection-xetex
+  texlive-fncychap
+  texlive-gnu-freefont
+  texlive-latexmk
+  texlive-tex-gyre
+  texlive-xetex
+
 ALMALINUX_HOST_PACKAGES_ESSENTIAL: >-
   bzip2
   ccache
@@ -211,5 +247,15 @@ ALMALINUX_HOST_PACKAGES_DOC: >-
   librsvg2-tools
   make
   python3-pip
-  texlive-fncychap
   which
+
+ALMALINUX_HOST_PACKAGES_DOC_PDF: >-
+  latexmk
+  texlive-collection-fontsrecommended
+  texlive-collection-latex
+  texlive-collection-latexrecommended
+  texlive-collection-xetex
+  texlive-fncychap
+  texlive-gnu-freefont
+  texlive-tex-gyre
+  texlive-xetex

documentation/ref-manual/system-requirements.rst

@@ -187,6 +187,11 @@ Here are the packages needed to build Project documentation manuals::
 
    $ sudo apt install &UBUNTU_DEBIAN_HOST_PACKAGES_DOC;
 
+In addition to the previous packages, here are the packages needed to build the
+documentation in PDF format::
+
+   $ sudo apt install &UBUNTU_DEBIAN_HOST_PACKAGES_DOC_PDF;
+
 Fedora Packages
 ---------------
 
@@ -200,6 +205,11 @@ Here are the packages needed to build Project documentation manuals::
    $ sudo dnf install &FEDORA_HOST_PACKAGES_DOC;
    $ sudo pip3 install &PIP3_HOST_PACKAGES_DOC;
 
+In addition to the previous packages, here are the packages needed to build the
+documentation in PDF format::
+
+   $ sudo dnf install &FEDORA_HOST_PACKAGES_DOC_PDF;
+
 openSUSE Packages
 -----------------
 
@@ -214,6 +224,11 @@ Here are the packages needed to build Project documentation manuals::
    $ sudo zypper install &OPENSUSE_HOST_PACKAGES_DOC;
    $ sudo pip3 install &PIP3_HOST_PACKAGES_DOC;
 
+In addition to the previous packages, here are the packages needed to build the
+documentation in PDF format::
+
+   $ sudo zypper install &OPENSUSE_HOST_PACKAGES_DOC_PDF;
+
 
 AlmaLinux Packages
 ------------------
@@ -245,6 +260,18 @@ Here are the packages needed to build Project documentation manuals::
    $ sudo dnf install &ALMALINUX_HOST_PACKAGES_DOC;
    $ sudo pip3 install &PIP3_HOST_PACKAGES_DOC;
 
+In addition to the previous packages, here are the packages needed to build the
+documentation in PDF format::
+
+   $ sudo dnf install &ALMALINUX_HOST_PACKAGES_DOC_PDF;
+
+.. warning::
+
+   Unlike Fedora or OpenSUSE, AlmaLinux does not provide the packages
+   ``texlive-collection-fontsextra``, ``texlive-collection-lang*`` and
+   ``texlive-collection-latexextra``, so you may run into issues. These may be
+   installed using `tlmgr <https://tug.org/texlive/tlmgr.html>`_.
+
 .. _system-requirements-buildtools:
 
 Required Git, tar, Python, make and gcc Versions