cross-gcc
Cross-GCC
Purpose
Guide agents through setting up and using cross-compilation GCC toolchains: triplets, sysroots, pkg-config, QEMU-based testing, and common failure modes.
Triggers
- "How do I compile for ARM on my x86 machine?"
- "I'm getting 'wrong ELF class' or 'cannot execute binary file'"
- "How do I set up a sysroot for cross-compilation?"
- "pkg-config returns host libraries in my cross build"
- "How do I debug a cross-compiled binary with QEMU + GDB?"
Workflow
1. Understand the triplet
A GNU triplet has the form <arch>-<vendor>-<os>-<abi> (often 3 or 4 parts):
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