Building CDP8 on Termux gives errors about POS64

As the title says, I can't build CDP8 without errors about `POS64` (`member reference base type 'fpos_t' (aka 'long') is not a structure or union`). Compiler: ``` clang version 20.1.8 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin Found candidate GCC installation: /data/data/com.termux/files/usr/bin/../../usr/lib/gcc/aarch64-linux-android/8.3.0 Found candidate GCC installation: /data/data/com.termux/files/usr/bin/../lib/gcc/aarch64-linux-android/8.3.0 ```