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BuildAndExecution.md

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Build and execution

Configure

There are options that can be used to create the project configuration before build.

CMAKE_BUILD_TYPE

Always needs to be set, usual values are Debug, Release, or RelWithDebInfo for the different build targets.

Example:

cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -B build/debug

DEACTIVATE_LOGGING

Can be set to stop the application from logging.

Example:

cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DDEACTIVATE_LOGGING -B build/debug

DEBUG

Will not only enable application internal debugging, but also profiling (APP_PROFILE). This option is mainly useful to get debugging and profiling output on release builds.

Example:

cmake -GNinja -DCMAKE_BUILD_TYPE=Release -DDEBUG -B build/release

APP_PROFILE

Enable profiling, useful for profiling a release build.

Example:

cmake -GNinja -DCMAKE_BUILD_TYPE=Release -DAPP_PROFILE -B build/release

WARNINGS_AS_ERRORS

Treat compiler warnings as errors. This option is by default true. To disable set it to FALSE.

Example:

cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DWARNINGS_AS_ERRORS=FALSE -B build/debug

Build

After configuration the application can be built through CMake via cmake --build, passing a build folder as argument.

Example:

cmake --build build/debug

This will build the application with the given configuration. Depending on the platform it was executed on a different build directory structure will be generated, reflecting how the application will latter be installed on packaging.

Execute

When not running through an IDE like CLion, the built application can be run by directly executing the generated binary. Depending on the operating system it can be found at a different place, as different build directory structures are generated.

macOS

On Apple devices an app package structure is created under ./build/<TARGET>/src/app/App.app, where <TARGET> is the build target like debug or release. Inside that application bundle is the app executable.

Run on a built target, in this example debug:

./build/debug/src/app/App.app/Contents/MacOS/App

Though, even better is to use Xcode as generator to create app builds on macOS. Only difference in usage is running CMake with -GXcode. If CMAKE_OSX_ARCHITECTURES is not set, it will create universal binaries on M1/2 macs.

To run a debug build created with Xcode:

./build/xcode/src/app/Debug/App.app/Contents/MacOS/App

To run a release build created with Xcode:

./build/xcode/src/app/Release/App.app/Contents/MacOS/App

Windows

To run a debug build:

build/debug/src/app/App.exe

To run a release build:

build/release/src/app/App.exe

Linux

For Linux the generated structure is a direct executable, as libraries and assets have dedicated locations on the system.

Run on a built target, in this example debug:

./build/debug/src/app/App

Next up: Testing