Improve generate() API build instructions

docs/genai/howto/build-from-source.md

@@ -17,105 +17,120 @@ nav_order: 2
 
 `cmake`
 
-## Build steps
+## Clone the onnxruntime-genai repo
 
-1. Clone this repo
+```bash
+git clone https://github.com/microsoft/onnxruntime-genai
+cd onnxruntime-genai
+```
 
-   ```bash
-   git clone https://github.com/microsoft/onnxruntime-genai
-   cd onnxruntime-genai
-   ```
+## Install ONNX Runtime
 
-2. Install ONNX Runtime
+By default, the onnxruntime-genai build expects to find the ONNX Runtime include and binaries in a folder called `ort` in the root directory of onnxruntime-genai. You can put the ONNX Runtime files in a different location and specify this location to the onnxruntime-genai build. These instructions use `ORT_HOME` as the location.
 
-    By default, the onnxruntime-genai build expects to find the ONNX Runtime include and binaries in a folder called `ort` in the root directory of onnxruntime-genai. You can put the ONNX Runtime files in a different location and specify this location to the onnxruntime-genai build. These instructions use ORT_HOME as the location.
+### Option 1: Install from release
 
-    * Install from release
+These instructions are for the Linux GPU build of ONNX Runtime. Replace `linux-gpu` with your target of choice.
 
-      These instructions are for the Linux GPU build of ONNX Runtime. Replace the location with the operating system and target of choice. 
+```bash
+cd <ORT_HOME>
+curl -L https://github.com/microsoft/onnxruntime/releases/download/v1.17.0/onnxruntime-linux-x64-gpu-1.17.1.tgz
+tar xvzf onnxruntime-linux-x64-gpu-1.17.1.tgz 
+mv onnxruntime-linux-x64-gpu-1.17.1/include .
+mv onnxruntime-linux-x64-gpu-1.17.1/lib .
+```
 
-      ```bash
-      cd $ORT_HOME
-      wget https://github.com/microsoft/onnxruntime/releases/download/v1.17.0/onnxruntime-linux-x64-gpu-1.17.0.tgz
-      tar xvzf onnxruntime-linux-x64-gpu-1.17.0.tgz 
-      mv onnxruntime-linux-x64-gpu-1.17.0/include .
-      mv onnxruntime-linux-x64-gpu-1.17.0/lib .
-      ```
+### Option 2: Install from nightly
 
-    * Install from nightly
-
-      Download the nightly nuget package `Microsoft.ML.OnnxRuntime` from: https://aiinfra.visualstudio.com/PublicPackages/_artifacts/feed/ORT-Nightly.
+Download the nightly nuget package `Microsoft.ML.OnnxRuntime` from: https://aiinfra.visualstudio.com/PublicPackages/_artifacts/feed/ORT-Nightly.
 
-      Extract the nuget package.
+Extract the nuget package.
 
-      ```bash
-      tar xvf Microsoft.ML.OnnxRuntime.1.18.0-dev-20240322-0323-ca825cb6e6.nupkg
-      ```
+```bash
+tar xvf Microsoft.ML.OnnxRuntime.1.18.0-dev-20240322-0323-ca825cb6e6.nupkg
+```
 
-      Copy the include and lib files into $ORT_HOME.
+Copy the include and lib files into `ORT_HOME`.
 
-      On Windows
+On Windows
 
-      Example is given for `win-x64`. Change this to your architecture if different.
+Example is given for `win-x64`. Change this to your architecture if different.
 
-      ```cmd
-      copy build\native\include\onnxruntime_c_api.h $ORT_HOME\include
-      copy runtimes\win-x64\native\*.dll $ORT_HOME\lib
-      ```
+```cmd
+copy build\native\include\onnxruntime_c_api.h <ORT_HOME>\include
+copy runtimes\win-x64\native\*.dll <ORT_HOME>\lib
+```
 
-      On Linux
+On Linux
 
-      ```cmd
-      cp build/native/include/onnxruntime_c_api.h $ORT_HOME/include
-      cp build/linux-x64/native/libonnxruntime*.so* $ORT_HOME/lib
-      ```      
+```cmd
+cp build/native/include/onnxruntime_c_api.h <ORT_HOME>/include
+cp build/linux-x64/native/libonnxruntime*.so* <ORT_HOME>/lib
+```      
 
-    * Or build from source
+### Option 3: Build from source
+
+```
+git clone https://github.com/microsoft/onnxruntime.git
+cd onnxruntime
+```
 
-      ```
-      git clone https://github.com/microsoft/onnxruntime.git
-      cd onnxruntime
-      ```
+Create include and lib folders in the `ORT_HOME` directory
 
-      Create include and lib folders in the ORT_HOME directory
+```bash
+mkdir <ORT HOME>/include
+mkdir <ORT_HOME>/lib
+```
 
-      ```bash
-      mkdir $ORT_HOME/include
-      mkdir $ORT_HOME/lib
-      ```
+Build from source and copy the include and libraries into `ORT_HOME`
 
-      Build from source and copy the include and libraries into ORT_HOME
+On Windows
 
-      On Windows
+```cmd
+build.bat --build_shared_lib --skip_tests --parallel [--use_cuda]
+copy include\onnxruntime\core\session\onnxruntime_c_api.h <ORT_HOME>\include
+copy build\Windows\Debug\Debug\*.dll <ORT_HOME>\lib
+```
 
-      ```cmd
-      build.bat --build_shared_lib --skip_tests --parallel [--use_cuda]
-      copy include\onnxruntime\core\session\onnxruntime_c_api.h $ORT_HOME\include
-      copy build\Windows\Debug\Debug\*.dll $ORT_HOME\lib
-      ```
+On Linux
 
-      On Linux
+```cmd
+./build.sh --build_shared_lib --skip_tests --parallel [--use_cuda]
+cp include/onnxruntime/core/session/onnxruntime_c_api.h <ORT_HOME>/include
+cp build/Linux/RelWithDebInfo/libonnxruntime*.so* <ORT_HOME>/lib
+```
 
-      ```cmd
-      ./build.sh --build_shared_lib --skip_tests --parallel [--use_cuda]
-      cp include/onnxruntime/core/session/onnxruntime_c_api.h $ORT_HOME/include
-      cp build/Linux/RelWithDebInfo/libonnxruntime*.so* $ORT_HOME/lib
-      ```
+## Build onnxruntime-genai
 
-3. Build onnxruntime-genai
+### Build for CPU
 
-   If you are building for CUDA, add the cuda_home argument.
+```bash
+cd ..
+python build.py [--ort_home <ORT_HOME>]
+```
 
-   ```bash
-   cd ..
-   python build.py [--cuda_home <path_to_cuda_home>]
-   ```
+### Build for CUDA
 
+These instructions assume you already have CUDA installed.
 
+```bash
+cd ..
+python build.py --cuda_home <path to cuda home> [--ort_home <ORT_HOME>]
+```
 
-4. Install Python wheel
+## Install the library into your application
+
+### Install Python wheel
+
+```bash
+cd build/wheel
+pip install *.whl
+```
+
+### Install Nuget package
+
+_Coming soon_
+
+### Install C/C++ header file and library
 
-   ```bash
-   cd build/wheel
-   pip install *.whl
-   ```
+_Coming soon_