Harfbuzz can't be installed anymore

[Aryetis]

Harfbuzz refuse to cooperate anymore. There are the reproduction steps for a freshly installed Debian bullseye (WSL2, should work with a standard Debian bullseye too) :

sudo apt-get install build-essential autoconf automake bison flex gawk libtool libtool-bin libncurses-dev curl file git gperf help2man texinfo unzip wget cmake pkg-config
mkdir -p Workspace/Kobo
cd -p Workspace/Kobo
git clone git@github.com:Aryetis/kobo-qt-setup-scripts.git #current commit at time of writing is 0ed5f2541fb9fa3553044cac11ad494270714b39
cd kobo-qt-setup-scripts
git submodule update --init --recursive
./install_toolchain.sh
########################################
# Pause there, add this to your ~/.bashrc and restart your shell (or just run it I guess)
export PATH="$HOME/x-tools/arm-kobo-linux-gnueabihf/bin:$PATH"
########################################
./get_qt.sh kobo
######## \/ harfbuzz installation should break there, like so https://pastebin.com/9sQEmrJ2
./install_libs.sh
######## /\ harfbuzz installation should break there, like so https://pastebin.com/9sQEmrJ2

I'm using my fork of "kobo-qt-setup-scripts" because I'm trying to fix it. Basically the only modifications I made are :

• Modify multiple files to move back everything that is installed from ~/kobo/x-tools back to ~/x-tools and ~/kobo/qt-bin back to ~/qt-bin. Because niluje's koxtoolchain stuff is hardcoded to install it there, and therefore IMHO it makes no sense to have install_toolchain.sh chmod somewhere else
• adding a bunch of flags in ./install_toolchain.sh to fix libfreetype installation
• update the deploy script qt version from 5.10.6 to 5.10.10

[Aryetis]

I managed to finish """""""""fixing"""""""""""""" stuff by :

• building libfreetype with --enable-shared=no so it can find libz.... which is already quite ugly
• switching harfbuzz to a commit that I knew for sure worked in the past (basically the 3.0.0 version....)
• Removing --with-png from "#libfreetype with harfbuzz" as it too couldn't find libpng.....

I've commited those change to my fork. But I have no clue what I'm doing. Please stop my madness.
I'll be waiting in the mobileread discord if you need more information.

It's still a fugly solution to what is probably an easy problem for whomever understand autoreconf magic and cross compilation better than I do. I'd like for everyone tinkering on Kobo to be able to build "one single" qt runtime and use it instead of having each app shipping their own.

[Aryetis]

Confirming that the ./install_libs.sh script is broken on a proper Debian VM

[Aryetis]

Still trying to fix this repository whenever I got time.

I've managed to """fix""" most of the stuff now in my fork. In a much proper way (but still kinda trash) than I mentioned previously. But it still fails during the linking step of ./build_qt.sh kobo make.
What I think is happenning is that the modifications I've made in ./install_libs.sh kinda work, but not enough because I might be ending up with some incomplete .pc files for pkgconfig. And my desperate attempt to fix it by adding a bunch of -I -L in ./build_qt is not enough somehow....

So I should probably go back to ./install_libs.sh try to figure a way to compile pnglib and harfbuzz without those export I added. And hopefuly after that, all I have to do is set the PKG_CONFIG_PATH for ./build_qt.sh and voila. But what a pain.... Especially when I don't know a lot of linux environment stuff nor why you need so many libs. I'm assuming it's all for UMR but still I don't know what was wrong with the built-in qt solutions.

[Aryetis]

Ok... I've finally fixed it.
I'll probably write a PR later this week but in the meanwhile if someone read this, they can use my fork https://github.com/Aryetis/kobo-qt-setup-scripts . tldr of the fixes I applied :

• Updated a bunch of flags for numerous libraries compilation (I've managed to keep everything, yes including harfbuzz, freetype, etc)
• Updated the zlib-ng patch yet again
• Removed every trace of what seems to be an incomplete attempt to move the ~/x-tools folder into ~/kobo/x-tools
• fixed the SYSROOT variable being incorrectly tested and set. For some reasons on my end it ends up being set to "empty string". Therefore it install every libraries in the incorrect folder, causing issues when compiling qt at the linking stage
• updated gdb from 10.2 to 11.2. Yes it used to work with 10.2 before but gdb does not ensure forward compatibility with gcc (in our case 11.2). So I chose to update it in order to have a gdb more recent than the used gcc. (And matching the version numbers please my OCD even tho it means nothing).
• removed any kind of hardcoded folder / ip address from the scripts.
• probably some other minor things I forgot about

Here's a guide on how I use it for my project at the moment : https://github.com/Aryetis/Obenkyobo/blob/master/DevReadme.md