mediapipe/docs/getting_started/cpp.md
MediaPipe Team 12f72f067d updated documentation
PiperOrigin-RevId: 480193380
2022-10-10 15:37:57 -07:00

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---
layout: default
title: MediaPipe in C++
parent: Getting Started
has_children: true
has_toc: false
nav_order: 5
---
# MediaPipe in C++
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1. TOC
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---
Please follow instructions below to build C++ command-line example apps in the
supported MediaPipe [solutions](../solutions/solutions.md). To learn more about
these example apps, start from [Hello World! in C++](./hello_world_cpp.md).
## Building C++ command-line example apps
### Option 1: Running on CPU
1. To build, for example, [MediaPipe Hands](../solutions/hands.md), run:
```bash
bazel build -c opt --define MEDIAPIPE_DISABLE_GPU=1 mediapipe/examples/desktop/hand_tracking:hand_tracking_cpu
```
2. To run the application:
```bash
GLOG_logtostderr=1 bazel-bin/mediapipe/examples/desktop/hand_tracking/hand_tracking_cpu \
--calculator_graph_config_file=mediapipe/graphs/hand_tracking/hand_tracking_desktop_live.pbtxt
```
This will open up your webcam as long as it is connected and on. Any errors
is likely due to your webcam being not accessible.
### Option 2: Running on GPU
Note: This currently works only on Linux, and please first follow
[OpenGL ES Setup on Linux Desktop](./gpu_support.md#opengl-es-setup-on-linux-desktop).
1. To build, for example, [MediaPipe Hands](../solutions/hands.md), run:
```bash
bazel build -c opt --copt -DMESA_EGL_NO_X11_HEADERS --copt -DEGL_NO_X11 \
mediapipe/examples/desktop/hand_tracking:hand_tracking_gpu
```
2. To run the application:
```bash
GLOG_logtostderr=1 bazel-bin/mediapipe/examples/desktop/hand_tracking/hand_tracking_gpu \
--calculator_graph_config_file=mediapipe/graphs/hand_tracking/hand_tracking_desktop_live_gpu.pbtxt
```
This will open up your webcam as long as it is connected and on. Any errors
is likely due to your webcam being not accessible, or GPU drivers not setup
properly.