From 296a539664975b29f25a24958ec513a2ecd008c8 Mon Sep 17 00:00:00 2001
From: Garak <garakmon@gmail.com>
Date: Sat, 11 Aug 2018 21:19:27 -0400
Subject: [PATCH] add faster builds and NODEP sections from pokeruby

---
 INSTALL.md | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/INSTALL.md b/INSTALL.md
index c5425204ca..bb5e9849d3 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -65,3 +65,32 @@ cd ../pokeemerald
 ```
 
 And build the ROM with `make`.
+
+# Faster builds
+
+After the first build, subsequent builds are faster. You can further speed up the build:
+
+## Parallel build
+
+This significantly speeds up the build on modern machines.
+
+By default `make` only runs a single thread. You can tell `make` to run on multiple threads with `make -j`. See the manfile for usage (`man make`).
+
+The optimal value for `-j` is the number of logical cores on your machine. You can run `nproc` to see the exact number.
+
+```
+$ nproc
+8
+```
+
+If you have 8 cores, run: `make -j8`
+
+`-j` on its own will spawn a new thread for each job. A clean build will have thousands of jobs, which will be slower than not using -j at all.
+
+## Disable the dependency scanning
+
+If you've only changed `.c` or `.s` files, you can turn off the dependency scanning temporarily. Changes to any other files will be ignored, and the build will either fail or not reflect those changes.
+
+`make NODEP=1`
+
+