---
sidebar_label: Build profiles
---

# Build Profiles

Profiles allow overriding `[build]` fields for specific build modes.

## Configuration

```toml
[build]
language = "c"
standard = "c17"
cflags = ["-Wall"]

[build.debug]
cflags = ["-O0", "-g"]

[build.release]
cflags = ["-O3", "-DNDEBUG"]
```

## Merge rules

Fields from `[build.<profile>]` are merged on top of `[build]`:

- **Scalar fields** (strings, numbers, bools) — replaced
- **Arrays** (`cflags`, `ldflags`, ...) — **appended** (extend the `[build]` array)

Set `inherit = false` to disable array inheritance (only profile's own arrays are used).

## Built-in profiles

| Profile | Default cflags |
|---------|---------------|
| `debug` | `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG` |
| `release` | `-O3 -DNDEBUG` |

## Target-specific profiles

```toml
[build.linux]
cflags = ["-DLINUX"]

[build.windows.debug]
cflags = ["-DWIN32", "-O0", "-g"]
```

Application order (highest priority first):
1. `[build.<target>.<profile>]`
2. `[build.<profile>.<target>]`
3. `[build.<target>]`
4. `[build.<profile>]`
5. `[build]`