cpp-deploy

DevOps & Security

Build and deploy C/C++ applications — CMake, Meson, Ninja, and Dockerfile patterns. Use when deploying a C or C++ project, or when CMakeLists.txt or meson.build is detected.

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Source SKILL.md: https://github.com/nixopus/nixopus/blob/HEAD/api/skills/cpp-deploy/SKILL.md

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C/C++ Deployment

Detection

Project is C/C++ if CMakeLists.txt or meson.build exists in the root.

Versions

Latest CMake (or Meson) and Ninja installed during build. No explicit version pinning by default.

Build

Build Process

Install CMake or Meson and Ninja
Configure and build into ./build (or /build)
Executable placed in the build directory

Start Command

Executable name matches the project root directory name, located in the build directory. Example: project my_app/ → ./build/my_app or /build/my_app.

Output

Build directory: /build (or ./build)
Source tree not included in final container; only build artifacts

Build Systems

File	Build system
`CMakeLists.txt`	CMake
`meson.build`	Meson

Both use Ninja as the default generator/backend.

Install Stage Optimization

Copy in order:

CMakeLists.txt or meson.build
meson.options (Meson)
src/, include/, or full source tree

Base Images

Stage	Image
Build	`gcc` or `clang` + CMake/Meson + Ninja
Runtime	`debian:bookworm-slim` or `alpine` (copy binary only)

Dockerfile Patterns

CMake

FROM gcc:13-bookworm AS build
RUN apt-get update && apt-get install -y cmake ninja-build && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY CMakeLists.txt ./
COPY src src
RUN cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release && cmake --build build

FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y ca-certificates libstdc++6 && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY --from=build /app/build/my_app .
EXPOSE 8080
CMD ["./my_app"]

Meson

FROM gcc:13-bookworm AS build
RUN apt-get update && apt-get install -y meson ninja-build && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY meson.build meson.options* ./
COPY src src
RUN meson setup build -Dbuildtype=release && ninja -C build

FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y ca-certificates libstdc++6 && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY --from=build /app/build/my_app .
EXPOSE 8080
CMD ["./my_app"]