---
sidebar_label: dcr build --profile lto
---

# Встроенные профили

Профили позволяют переопределять любые поля секции `[build]` для конкретного режима сборки.

## Конфигурация

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

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

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

## Правила

Поля из `[build.\<profile>]` **мержатся поверх** `[build]`

* **Scalar fields** (strings, numbers, bools) — replaced
* Массивы (`cflags`, `ldflags`, ...) **заменяются полностью**, а не дополняются

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

## Кастомные профили

The default flags for each profile are composed from three config fields:

| Field       | Default cflags     | Профили сборки |
| ----------- | ------------------ | -------------- |
| `opt_level` | `-O0 -g`           | `"3"`          |
| `debug`     | `true`             | `false`        |
| `warnings`  | `["all", "extra"]` | `[]`           |

Which produce the equivalent compiler flags:

| Профиль   | Effective flags                                            |
| --------- | ---------------------------------------------------------- |
| `debug`   | `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG` |
| `release` | `-O3 -DNDEBUG`                                             |

Additional build options can be toggled per-profile:

```toml
[build.release]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "1"

[build.debug]
opt_level = "1"
debug = false
warnings = ["all", "error"]
```

## Target-specific профили

```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. ]`или`[build.\<target>]\`
4. `[build.\<profile>]`.
5. `[build]`