skia2/third_party/harfbuzz/README
Ben Wagner 6e70db0587 Roll HarfBuzz
8be74d8553..1e06282105

This changes the upstream to github (where actual work is now done) and
picks up AAT work so we can drop the (buggy) CoreText backend on Mac.

Change-Id: Ib3fbbb8e07910d570e70489b4e78a9cb6fac3630
Reviewed-on: https://skia-review.googlesource.com/c/189876
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-02-06 21:28:19 +00:00

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#!/bin/sh
# Some of HarfBuzz's headers are created at build time using the Ragel
# State Machine Compiler. To reduce complex dependencies, I pre-built
# these files:
# hb-buffer-deserialize-json.hh
# hb-buffer-deserialize-text.hh
# hb-ot-shape-complex-indic-machine.hh
# hb-ot-shape-complex-myanmar-machine.hh
# hb-ot-shape-complex-use-machine.hh
# from these sources:
# ../externals/harfbuzz/src/hb-buffer-deserialize-json.rl
# ../externals/harfbuzz/src/hb-buffer-deserialize-text.rl
# ../externals/harfbuzz/src/hb-ot-shape-complex-indic-machine.rl
# ../externals/harfbuzz/src/hb-ot-shape-complex-myanmar-machine.rl
# ../externals/harfbuzz/src/hb-ot-shape-complex-use-machine.rl
#
# The files in this directory are created by installing the
# prerequiste packages, checking out a new version of HarfBuzz, doing
# `./autogen.sh && ./configure && make`, then copying the
# autogenerated .h and .hh files to this directory.
#
# These files are now checked into the git repository and the HarfBuzz
# maintainers keep them up to date by using the build rules in the HarfBuzz
# build. As a result this step is no longer necessary, but if we need to
# regenerate these files ourselves, this is how to do it.
set -e
set -x
for package in automake libtool pkg-config ragel gtk-doc-tools; do
if ! ( dpkg-query -W -f'${Status}' "$package" 2>/dev/null | \
grep -q "ok installed" ); then
sudo apt-get install "$package"
fi
done
cd "$(dirname "$0")/../externals/harfbuzz"
./autogen.sh
./configure
make -j4
cp src/hb-version.h ../../harfbuzz/
for RAGEL_FILE in src/*.rl; do
BUILT_HEADER="src/$(basename "$RAGEL_FILE" '.rl').hh"
if [ -f "$BUILT_HEADER" ]; then
cp -v "$BUILT_HEADER" ../../harfbuzz/
fi
done
git clean -fxd