How to install a clang toolchain on a phone without root access?

To install a Clang toolchain on Android phones without root access, you can utilize the Android NDK (Native Development Kit) or Termux, a terminal emulator and Linux environment for Android. The Android NDK provides Clang as its default compiler and can be used for native code development. Termux, on the other hand, allows you to install a Linux package manager and subsequently Clang. Both methods do not require root access.