From 887e4e1946c853a3f8ab0a4a74210d5eaa7d94c3 Mon Sep 17 00:00:00 2001
From: silverweed <silverweed14@proton.me>
Date: Tue, 23 Jul 2024 09:38:17 +0200
Subject: [PATCH] update readme

update makefile and readme
---
 Makefile  |  3 ++-
 README.md | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index ac6168e..3fc8993 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,8 @@ all: build/imgui.o $(ROOT_IFACE) ubsan
 clean:
 	rm build/*.o rntviewer $(ROOT_IFACE)
 
-build/imgui.o: src/imgui_inc.cpp third_party/imgui/imgui.h
+build/imgui.o: src/imgui_inc.cpp
+	@mkdir -p $(@D)/build
 	$(CXX) -O3 -fPIC -c -Ithird_party/imgui $< -o $@
 
 $(ROOT_IFACE): src/root/RMicroFileReader.cxx
diff --git a/README.md b/README.md
index 23aed86..ef94e78 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ rntviewer currently only works on Linux (PRs welcome).
 The dependencies are:
   - GLFW3 (`libglfw3-dev` on debian, `glfw-devel` on fedora, `glfw` on arch)
   - ROOT (likely bleeding edge version, compiled from sources)
+  - libxxhash3-dev
 
 Other than those, rntviewer depends on Dear ImGui and GLAD (both included in the source tree).
 
@@ -22,6 +23,15 @@ The machine must support OpenGL 4.
 
 ### Building
 Building is done with `make`. Make sure to `source /path/to/root/bin/thisroot.sh` before running it.
+You probably want to build the release version:
+```
+$ make r
+```
+
+You can test that the tool is working properly with:
+```
+$ ./rntviewer ntpl lmext1.root
+```
 
 ### Usage
 ```