---
layout: post
title: there is NOT at least X GiB RAM
category: GNU/Linux
tags:
  - gentoo
---

Recently, while compiling latest Rust version I came across a problem on my very
old Macbook where `emerge` complained about not enough RAM to compile Rust.

The `check-reqs_pkg_setup` from `check-reqs.eclass` takes care of this check:

```bash
...
pre_build_checks() {
    CHECKREQS_DISK_BUILD="7G"
    CHECKREQS_MEMORY="4G"
...
    check-reqs_pkg_setup
}
```

If you don't have enough memory, the quick and dirty solution is to add enough
swap and run `emerge` again with `${I_KNOW_WHAT_I_AM_DOING}` set.

```
fallocate -l 8G /mnt/swap.swap
mkswap /mnt/swap.swap
swapon /mnt/swap.swap
chmod 600 /mnt/swap.swap
I_KNOW_WHAT_I_AM_DOING=1 emerge -1 rust
```