Cross-compiling with Clang command-line arguments

Now that you know each toolchain component, we will show you how to use Clang as a cross-compiler by using the appropriate driver arguments.

Note

All the examples in this section are tested in an x86_64 machine running Ubuntu 12.04. We use Ubuntu-specific tools to download some dependencies, but the Clang-related commands should work in any other OS environment without (or with minor) modifications.

Driver options for the target

Clang uses the –target=<triple> driver option to dynamically select the target triple for which code needs to be generated. Beyond the triple, other options can be used to make target selection more accurate:

• The -march=<arch> option selects the target base architecture. The examples of the <arch> values include armv4t, armv6, armv7, and armv7f for ARM and mips32, mips32r2, mips64, and mips64r2 for MIPS. This option alone also selects a default base CPU to be used in the code generator.

• To select a specific...