Update Linux build instructions: new CMakeLists changes

content/docs/building-from-source.org

@@ -12,16 +12,16 @@ Chordcat depends on the following libraries:
 
 CMake will fetch and build some of these dependencies from source
 while building chordcat. See the next section for installation of the
-required dependencies of above libraries.
+required dependencies.
 
 ** Prerequisites
 Firstly, you will need CMake and a modern C++ compiler that supports
 C++20 (gcc, clang, etc.)
 
-In order for CMake to be able to build the above libraries, you will
-need to install the dependencies for each of those libraries.  This
-varies from platform to platform so please visit the respective
-project pages to find out the dependencies for your platform.
+In order for CMake to be able to build chordcat, you will need
+to install these libraries on your system. Libraries which are
+not commonly available on most systems (like ImGui and ImGui-SFML)
+will be fetched and built by CMake as part of the build process.
 
 ** Linux
 
@@ -35,8 +35,9 @@ And the dependencies with:
 #+begin_example bash
 sudo apt install \
     libsfml-dev \
+    fluidsynth \
     libfluidsynth-dev \
-    libboost-all-dev \ 
+    libboost-all-dev 
 #+end_example
 
 The midi functionality of chordcat is provided by libremidi. libremidi
@@ -89,6 +90,18 @@ To install the Pulse development libraries on debian-based systems:
 sudo apt install libpulse-dev
 #+end_example
 
+*** Building
+Once you have all the dependencies you need for your system, build
+and run chordcat with:
+
+#+begin_example bash
+cd chordcat
+mkdir build && cd build
+cmake ..
+make -j$(nproc)
+./chordcat
+#+end_example
+
 ** MacOS
 WIP