mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
5384258f4e
As mentioned in "Assumption:", current grep expression can't catch
font files whose names are changed from upstream "Noto CJK fonts".
To avoid false negatives, use command of the form:
fc-list : file family variable
, where ":" works as a wildcard pattern.
Variable fonts can be detected by filtering the output with
"variable=True" and "Noto CJK" font-family variants.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/c62ba2e6-c124-4e91-8011-cb1da408a3c5@gmail.com
115 lines
4.7 KiB
Bash
Executable file
115 lines
4.7 KiB
Bash
Executable file
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0-only
|
|
# Copyright (C) Akira Yokosawa, 2024
|
|
#
|
|
# For "make pdfdocs", reports of build errors of translations.pdf started
|
|
# arriving early 2024 [1, 2]. It turned out that Fedora and openSUSE
|
|
# tumbleweed have started deploying variable-font [3] format of "Noto CJK"
|
|
# fonts [4, 5]. For PDF, a LaTeX package named xeCJK is used for CJK
|
|
# (Chinese, Japanese, Korean) pages. xeCJK requires XeLaTeX/XeTeX, which
|
|
# does not (and likely never will) understand variable fonts for historical
|
|
# reasons.
|
|
#
|
|
# The build error happens even when both of variable- and non-variable-format
|
|
# fonts are found on the build system. To make matters worse, Fedora enlists
|
|
# variable "Noto CJK" fonts in the requirements of langpacks-ja, -ko, -zh_CN,
|
|
# -zh_TW, etc. Hence developers who have interest in CJK pages are more
|
|
# likely to encounter the build errors.
|
|
#
|
|
# This script is invoked from the error path of "make pdfdocs" and emits
|
|
# suggestions if variable-font files of "Noto CJK" fonts are in the list of
|
|
# fonts accessible from XeTeX.
|
|
#
|
|
# References:
|
|
# [1]: https://lore.kernel.org/r/8734tqsrt7.fsf@meer.lwn.net/
|
|
# [2]: https://lore.kernel.org/r/1708585803.600323099@f111.i.mail.ru/
|
|
# [3]: https://en.wikipedia.org/wiki/Variable_font
|
|
# [4]: https://fedoraproject.org/wiki/Changes/Noto_CJK_Variable_Fonts
|
|
# [5]: https://build.opensuse.org/request/show/1157217
|
|
#
|
|
#===========================================================================
|
|
# Workarounds for building translations.pdf
|
|
#===========================================================================
|
|
#
|
|
# * Denylist "variable font" Noto CJK fonts.
|
|
# - Create $HOME/deny-vf/fontconfig/fonts.conf from template below, with
|
|
# tweaks if necessary. Remove leading "# ".
|
|
# - Path of fontconfig/fonts.conf can be overridden by setting an env
|
|
# variable FONTS_CONF_DENY_VF.
|
|
#
|
|
# * Template:
|
|
# -----------------------------------------------------------------
|
|
# <?xml version="1.0"?>
|
|
# <!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
|
|
# <fontconfig>
|
|
# <!--
|
|
# Ignore variable-font glob (not to break xetex)
|
|
# -->
|
|
# <selectfont>
|
|
# <rejectfont>
|
|
# <!--
|
|
# for Fedora
|
|
# -->
|
|
# <glob>/usr/share/fonts/google-noto-*-cjk-vf-fonts</glob>
|
|
# <!--
|
|
# for openSUSE tumbleweed
|
|
# -->
|
|
# <glob>/usr/share/fonts/truetype/Noto*CJK*-VF.otf</glob>
|
|
# </rejectfont>
|
|
# </selectfont>
|
|
# </fontconfig>
|
|
# -----------------------------------------------------------------
|
|
#
|
|
# The denylisting is activated for "make pdfdocs".
|
|
#
|
|
# * For skipping CJK pages in PDF
|
|
# - Uninstall texlive-xecjk.
|
|
# Denylisting is not needed in this case.
|
|
#
|
|
# * For printing CJK pages in PDF
|
|
# - Need non-variable "Noto CJK" fonts.
|
|
# * Fedora
|
|
# - google-noto-sans-cjk-fonts
|
|
# - google-noto-serif-cjk-fonts
|
|
# * openSUSE tumbleweed
|
|
# - Non-variable "Noto CJK" fonts are not available as distro packages
|
|
# as of April, 2024. Fetch a set of font files from upstream Noto
|
|
# CJK Font released at:
|
|
# https://github.com/notofonts/noto-cjk/tree/main/Sans#super-otc
|
|
# and at:
|
|
# https://github.com/notofonts/noto-cjk/tree/main/Serif#super-otc
|
|
# , then uncompress and deploy them.
|
|
# - Remember to update fontconfig cache by running fc-cache.
|
|
#
|
|
# !!! Caution !!!
|
|
# Uninstalling "variable font" packages can be dangerous.
|
|
# They might be depended upon by other packages important for your work.
|
|
# Denylisting should be less invasive, as it is effective only while
|
|
# XeLaTeX runs in "make pdfdocs".
|
|
|
|
# Default per-user fontconfig path (overridden by env variable)
|
|
: ${FONTS_CONF_DENY_VF:=$HOME/deny-vf}
|
|
|
|
export XDG_CONFIG_HOME=${FONTS_CONF_DENY_VF}
|
|
|
|
notocjkvffonts=`fc-list : file family variable | \
|
|
grep 'variable=True' | \
|
|
grep -E -e 'Noto (Sans|Sans Mono|Serif) CJK' | \
|
|
sed -e 's/^/ /' -e 's/: Noto S.*$//' | sort | uniq`
|
|
|
|
if [ "x$notocjkvffonts" != "x" ] ; then
|
|
echo '============================================================================='
|
|
echo 'XeTeX is confused by "variable font" files listed below:'
|
|
echo "$notocjkvffonts"
|
|
echo
|
|
echo 'For CJK pages in PDF, they need to be hidden from XeTeX by denylisting.'
|
|
echo 'Or, CJK pages can be skipped by uninstalling texlive-xecjk.'
|
|
echo
|
|
echo 'For more info on denylisting, other options, and variable font, see header'
|
|
echo 'comments of scripts/check-variable-fonts.sh.'
|
|
echo '============================================================================='
|
|
fi
|
|
|
|
# As this script is invoked from Makefile's error path, always error exit
|
|
# regardless of whether any variable font is discovered or not.
|
|
exit 1
|