IPC demo app

Minimal demo of building an application for an IP camera with a Linux cross-compilation environment.

The repository intentionally mirrors the production build flow in a reduced form:

1. The build environment provides a cross-compiler.
2. Docker calls the cross-compiler.
3. The build produces a target Linux binary.

The demo application is a tiny HTTP server. It listens on port 8080 by default and returns HTTP 200 OK for every accepted TCP connection.

Build

Build the demo app:

make

By default, Docker uses the standard Ubuntu ARM cross compiler:

arm-linux-gnueabi-gcc

The output file is:

build/http_200

To build with a local toolchain archive, keep the archive in the repository directory and pass it as TOOLCHAIN:

make TOOLCHAIN=toolchain.tgz

To only build the Docker image:

make docker-build

To copy the binary from the image:

make docker-artifact

The default toolchain prefix is arm-linux-. For a toolchain with another prefix, pass it explicitly:

make TOOLCHAIN=toolchain.tgz TOOLCHAIN_PREFIX=vendor-linux-

To find the prefix, list compiler binaries in the archive:

tar -tf toolchain.tgz | grep '/bin/.*gcc$'

For example, if the compiler is bin/vendor-linux-gcc, use TOOLCHAIN_PREFIX=vendor-linux-.

Run On A Camera

Copy build/http_200 to the camera and run it:

./http_200 8080

Then request any path:

curl http://CAMERA_IP:8080/

The expected response is:

OK