Chore: Ubuntu 18.04 build

Issue #37

README.md

@@ -114,24 +114,28 @@ cd atta
 <!------------ Linux ------------>
 <details><summary> Linux </summary>
 <h4>Dependencies</h4>
-To build atta properly, you need to have cmake installed.
-<pre><code>sudo apt-get install cmake xorg-dev curl</code></pre>
+To build atta, you need:
+<ul>
+  <li>g++ >= 9.0</li>
+  <li>cmake >= 3.14</li>
+</ul>
 
-Also, be sure that your <strong>compiller supports C++17</strong> (g++ >= 9.0).
+<strong>Ubuntu:</strong>
+<pre><code>sudo apt-get install g++ cmake git xorg-dev curl</code></pre>
+<i>Note: If your ubuntu is old, you may need to install the latest cmake/g++ manually.</i>
 
 <h4>Run</h4>
 <pre><code>git clone [email protected]:brenocq/atta.git
 cd atta
-./scripts/build.sh --help
-./scripts/build.sh
+./build.sh --help
+./build.sh
 ./build/release/bin/atta_test
 ./build/release/bin/atta
 </code></pre>
 </details>
 
 If you found any errors, please do not hesitate to [create an issue](https://github.com/brenocq/atta/issues/new?assignees=brenocq&labels=fix&template=bug_report.md&title=) :wink:.
 
-
 ## Discussions
 If you want to contribute, have ideas, or have questions about atta, feel free to [start a discussion](https://github.com/brenocq/atta/discussions).
 

src/extern/solveImgui.cmake

@@ -3,10 +3,7 @@ set(ATTA_IMGUI_TARGETS "")
 
 FetchContent_Declare(
     imgui
-    GIT_REPOSITORY "https://github.com/ocornut/imgui"
-    GIT_TAG "docking"
-    GIT_PROGRESS TRUE
-    GIT_SHALLOW TRUE
+    URL "https://storage.googleapis.com/atta-deps/imgui-ff1567e2406797cbd1a3ef3d716888d6c3a66bd7.zip"
 )
 
 atta_log(Info Extern "Fetching ImGui...")