A few days ago, I decided to try and see if perhaps I could compile Rockbox Utility on a non-x86_64 platform for Linux, and chose my Raspberry Pi 4B, which is an ARM64 device and running an appropriate Linux version (Raspberry Pi OS 64-bit; aarch64) as the test candidate. That build was successful and now the aarch64 binary is being offered as a download.
I then decided to see if I can do the same with my Raspberry Pi 3B+ and build an armhf binary, as the 3B+ I have has the 32-bit version of Raspberry Pi OS on it. I set up all the Qt5 dev packages I needed and got to compiling, but with no luck. The following error occurs when talkfile.cpp was reached:
talkfile.cpp:181:49: error: 'wildcardToRegularExpression' is not a member of 'QRegularExpession'
I had been trying to figure out what this error means and why it occurred for a couple of days but with no luck. I'm not sure if perhaps I might be missing a needed library for Qt5, but as Raspberry Pi OS is just Debian with a different shell and naming, any Debian packages for armhf are available for download from their repos. But I do digress; would anyone have an idea of perhaps any packages I should install for Qt5 to get past this error?