CMake VS cmake-examples

I thought I would share my custom installer script for the latest GitHub versions of CMake, Ninja, and Meson.

The same thing probably applies if you use the FindGlut.cmake module which is documented here: https://cmake.org/cmake/help/latest/module/FindGLUT.html

building cmake - version 3.26.3 ==================================== Downloading https://github.com/kitware/cmake/archive/refs/tags/v3.26.3.tar.gz as cmake-3.26.3.tar.gz Download Completed File extracted: cmake-3.26.3.tar.gz $ ./configure --prefix=/root/ffmpeg-build-script/workspace --parallel=40 --enable-ccache -- -DCMAKE_USE_OPENSSL=OFF $ make -j 40

find_package(Python3 ...) will look for a file FindPython3.cmake shipped with CMake. I urge you to try to go over its contents to get an idea of what it does underneath.

The file FindSomePKG.cmake (module approach) is supposed to be written either by you (you write it manually and put in a cmake subdirectory in your git repo) or it's an official package file shipped along with CMake, e.g FindOpenSSL.cmake with documentation here.

sudo apt-get install build-essential libncurses5-dev gnutls-dev bison zlib1g-dev ccache libssl-dev # Get cmake # Downloaded under ~/ wget https://github.com/Kitware/CMake/releases/download/v3.25.2/cmake-3.25.2.tar.gz cd cmake-3.25.2 ~/cmake-3.25.2 $ ./bootstrap ~/cmake-3.25.2 $ make ~/cmake-3.25.2 $ sudo make install

Note that `assert`s are disabled if you define the macro `NDEBUG`, e.g. https://godbolt.org/z/hMWo8KM7q

CMake adds these flags to release builds: https://github.com/Kitware/CMake/blob/e1eacbe2c522a8bf9a82af...

Would be nice to have a non-macro solution for controlling behavior at configure time, but the `NDEBUG` macro is basically already your `DEBUG` constexpr.

It's open-source. It might get merged in!

FROM node:16 WORKDIR /cmake COPY cmake-3.25.0-rc4-linux-x86_64.sh ./ # OR # RUN apt update && apt install -y g++ wget bash # RUN wget https://github.com/Kitware/CMake/releases/download/v3.25.0-rc4/cmake-3.25.0-rc4-linux-x86_64.sh RUN ./cmake-3.25.0-rc4-linux-x86_64.sh --skip-license && rm cmake-3.25.0-rc4-linux-x86_64.sh ENV PATH="$PATH:/cmake/bin" WORKDIR /app RUN npm i [email protected] COPY package.json . COPY package-lock.json . RUN npm --verbose i COPY . . RUN npm --verbose run build

The downside for CMake is that it’s famously crappy in its own way and the internet is full of bad examples. This isn’t terrible: https://github.com/ttroy50/cmake-examples/blob/master/01-basic/H-third-party-library/CMakeLists.txt

I found a github repo I'm going to use as tutorial: https://github.com/ttroy50/cmake-examples

And one of the best ressources ever to get started with Cmake is this repo: https://github.com/ttroy50/cmake-examples

I would recommend having a look at this repository

For projects with external dependencies, I suggest starting with a lightweight editor like Atom, Sublime Text or VSCode without plugins. Try building with command line CMake, see here for some basics: https://github.com/ttroy50/cmake-examples