---
sidebar_label: Cross-compilation
---

# Cross-Compilation

## Short Names

DCR supports short platform names:

| Short Name | Full Triple                |
| ---------- | -------------------------- |
| `linux`    | `x86_64-unknown-linux-gnu` |
| `macos`    | `x86_64-apple-darwin`      |
| `windows`  | `x86_64-pc-windows-msvc`   |

```bash
dcr build --target windows
```

## Full Triples

```bash
dcr build --target aarch64-unknown-linux-gnu
dcr build --target x86_64-pc-windows-gnu      # mingw
dcr build --target armv7-unknown-linux-gnueabihf
```

## clang --target

When using clang, DCR injects `--target=\<triple>` into CFLAGS.

```toml
[build]
compiler = "clang"
target = "aarch64-unknown-linux-gnu"
# Auto: cflags += ["--target=aarch64-unknown-linux-gnu"]
```

## Bare-Metal / Freestanding

For targets containing `none`, `-elf`, `eabi`, or `baremetal`, DCR automatically:

1. **Disables default flags** — no system include paths, no `-l` libc
2. **Injects `-ffreestanding`** at compile time and `-nostdlib -static` at link time

You can also enable freestanding mode explicitly:

```toml
[build]
freestanding = true
```

```bash
dcr build --target aarch64-none-elf
```

## Target Directory

On Linux with explicit target:

```
target/<triple>/<profile>/
```

On macOS/Windows or without target:

```
target/<profile>/
```