AppImage error libcairo.so.2: undefined symbol: FT_Get_Transform on openSUSE

[padreputativo]

Describe the bug
I can't run the AppImage.

To Reproduce
Run the AppImage on openSUSE Leap.

And get this error.

./Video2X-x86_64.AppImage: symbol lookup error: /tmp/.mount_Video2Z9eDoh/usr/bin/../lib/libcairo.so.2: undefined symbol: FT_Get_Transform

Expected behavior
It should run normally, use the system libraries, or have its own libraries to do so.

Actual behavior
It shows an error.

Environment:

• OS: openSUSE Leap 15.6
• GPU: GeForce GTX 1050 Ti
• Video2X Version: 6.4.0

Full command
./Video2X-x86_64.AppImage

[k4yt3x]

Can you try installing libfreetype6?

[padreputativo]

I have it installed, but it doesn't seem to find it. It's here:

/usr/lib/libfreetype.so.6
/usr/lib/libfreetype.so.6.17.4
/usr/lib64/libfreetype.so
/usr/lib64/libfreetype.so.6
/usr/lib64/libfreetype.so.6.17.4

[k4yt3x]

I wonder if it's because of the openSUSE lib paths. Can you try:

LD_LIBRARY_PATH="/usr/lib64:$LD_LIBRARY_PATH" ./Video2X-x86_64.AppImage

If that still doesn't work, debug it with:

LD_DEBUG=libs ./Video2X-x86_64.AppImage 2>&1 | grep -i "freetype"

See what it prints. You can also check freetype's version. It needs to be newer than 2.10.0.

[padreputativo]

More errors appear, and those libraries are also present:

[k4yt3x]

Hmm I guess setting LD_LIBRARY_PATH prevents it from searching the bundled libraries. It looks like it tried the correct lib directory though. Does /usr/lib64/libfreetype.so.6 exist?

[k4yt3x]

Oh right nvm you posted that above. It does exist. Maybe it's just too old then.

[k4yt3x]

The official libfreetype6 package has the version 2.13.2, which should be enough given FT_Get_Transform was introduced in 2.10.0 or something. Can you check your libfreetype6 version?

[padreputativo]

The version of Freetype is 6.17.4, and the rest of the libraries are exactly the required ones. I have tried running it by adding different directories, but it seems unable to find them. In the end, after discussing with GPT, I thought that maybe it can't find the library because the program that verifies where the libraries are is missing. When I checked if they existed, GPT told me to use "ldconfig," but despite having it installed, it doesn't work directly since it's in /sbin/ and requires sudo. I don't know what AppImage uses to "find" the libraries.

[padreputativo]

Correction, the version is 2.10.4-150000.4.15.1

[k4yt3x]

Ah that explains. I double checked and FT_Get_Transform is added in FreeType 2.11. The library you have is just too old. I do see from openSUSE's package repo that the latest is 2.13.2, at least for Tumbleweed. Maybe try upgrading that package or consider a newer version of the distro?

[padreputativo]

I'm using openSUSE Leap, and I understand that it always uses the "most stable" versions of packages to minimize issues. I guess I can try updating it anyway and see if I get lucky.

[padreputativo]

Solved!! Many thanks!!

[k4yt3x]

Great to hear that. I've updated the title so it's easier for other people with similar issues to find this thread. Ultimately, this is linuxdeploy's issue where it chooses to exclude libfreetype6, so a compatible version has to be available on the host.