| CMAKE_SOURCE_DIR |
| ---------------- |
| |
| The path to the top level of the source tree. |
| |
| This is the full path to the top level of the current CMake source |
| tree. For an in-source build, this would be the same as |
| :variable:`CMAKE_BINARY_DIR`. |
| |
| When run in :option:`cmake -P` script mode, CMake sets the variables |
| :variable:`CMAKE_BINARY_DIR`, ``CMAKE_SOURCE_DIR``, |
| :variable:`CMAKE_CURRENT_BINARY_DIR` and |
| :variable:`CMAKE_CURRENT_SOURCE_DIR` to the current working directory. |
| |
| Modifying ``CMAKE_SOURCE_DIR`` has undefined behavior. |
