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-# Building
-* `make -C tools`
-* `make setup`
-* `make`
+# ultralib
+
+Reverse engineering of libultra
+
+## Compatibility
+
+Currently this repo supports building the following versions:
+
+| IDO / GCC  | `libultra.a` / `libgultra.a` | `libultra_d.a` / `libgultra_d.a` | `libultra_rom.a` / `libgultra_rom.a` |
+| -          | :-: | :-: | :-: |
+| 2.0E       | :x: / N/A | :x: / N/A | :x: / N/A |
+| 2.0F       | :x: / N/A | :x: / N/A | :x: / N/A |
+| 2.0G       | :x: / N/A | :x: / N/A | :x: / N/A |
+| 2.0H       | :x: / :x: | :x: / :x: | :x: / :x: |
+| 2.0I       | :x: / :x: | :x: / :x: | :x: / :x: |
+| 2.0I_patch | :x: / :x: | :x: / :x: | :x: / :x: |
+| 2.0J       | :x: / :x: | :x: / :x: | :x: / :x: |
+| 2.0K       | :x: / :x: | :x: / :x: | :x: / :x: |
+| 2.0L       | :x: / :x: | :x: / :x: | :x: / :heavy_check_mark: |
+| ique_v1.5  | :x: | :x: | :x: |
+
+## Preparation
+
+After cloning the repo, put a copy of the target archive on the root of this directory.
+
+## Build dependencies
+
+The build process requires the following packages:
+
+- build-essential
+- python3
+
+Under Debian / Ubunutu you can install them with the following commands:
+
+```bash
+sudo apt update
+sudo apt install build-essential python3
+```
+
+## Building
+
+- `make setup`
+- `make`