On Aug 7, 2017, at 5:17 AM, Dharmil Shah <dysha...@gmail.com> wrote: > > I did something like this: > > CC=${CC - /../../llvm-arm-toolchain-ship/3.8/bin/clang}
I don’t know that syntax, and due to its form, I’ve failed to Google up a reference to it, so I don’t know what exactly it is you’re trying to accomplish. However, I don’t see what’s wrong with either: 1. CC=../../llvm-arm-toolchain-ship/3.8/bin/clang 2. autoconf CC=../../llvm-arm-toolchain-ship/3.8/bin/clang 3. Writing an autoconf macro that seeks out the nearest Clang installation compatible with your necessary build flags (-march=armwhatever, etc.). That’s in increasing order of preference.