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+---
+title: Project Architecture
+---
+
+The following tree structure represents a typical CMake project
+directory structure:
+
+```tree
+<project-root-path>
+|
+├── CMakeLists.txt
+│
+├── autobuild/
+│   ├── agl
+│   │   └── autobuild
+│   ├── linux
+│   │   └── autobuild
+│   └── windows
+│       └── autobuild
+├── conf.d/
+│   ├── packaging/
+│   │   ├── rpm
+│   │   │   └── package.spec
+│   │   └── deb
+│   │       ├── package.dsc
+│   │       ├── debian.package.install
+│   │       ├── debian.changelog
+│   │       ├── debian.compat
+│   │       ├── debian.control
+│   │       └── debian.rules
+│   ├── cmake
+│   │   ├── 00-debian-osconfig.cmake
+│   │   ├── 00-suse-osconfig.cmake
+│   │   ├── 01-default-osconfig.cmake
+│   │   └── config.cmake
+│   └── wgt
+│       ├── icon.png
+│       └── config.xml.in
+├── <target>
+│   └── <files>
+├── <target>
+│   └── <file>
+└── <target>
+    └── <files>
+```
+
+| File or Directory | Parent | Description |
+|----|----|----|
+| *root_path* | n/a | CMake project root path. Holds the master CMakeLists.txt file and all general project files.
+| CMakeLists.txt | The master CMakeLists.txt file.
+| autobuild/ | *root_path* | Scripts generated from app-templates to build packages the same way for differents platforms.
+| conf.d/ | *root_path* | Holds needed files to build, install, debug, and package an AGL application project.
+| packaging/ | conf.d/ | Contains output files used to build packages.
+| cmake/ | conf.d/ | Minimally contains the config.cmake file, which is modified from the sample provided in the app-templates submodule.
+| wgt/ | conf.d/ | Contains config.xml.in and optionaly the test-config.xml.in template files that are modified from the sample provided with the CMake module for the needs of the project.  For more details, see the config.xml.in.sample and test-config.xml.in.sample files.
+| *target* | *root_path* | A target to build, which is typically a library or executable.
+
+When building projects using CMake, the build process automatically detects
+the `CMakeLists.txt` and `*.cmake` files.
+To help with this process, the `PROJECT_SRC_DIR_PATTERN` variable
+is used for recursive pattern searching from the CMake project's
+*root_path* downward.
+Each sub-folder below *root_path* in the project is searched and included
+during compilation.
+The directories matching the pattern `PROJECT_SRC_DIR_PATTERN` variable
+are scanned.
+
+**NOTE:** The `PROJECT_SRC_DIR_PATTERN` variable defaults to "*".
+
+When the `CMakeLists.txt` file is found, the directory in which it is found
+is automatically added to the CMake project.
+
+Similarly, when a file whose extension is `.cmake` is found, the directory in
+which that file resides is also added to the CMake project.
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