# CMAKE_CURRENT_SOURCE_DIR

The path to the source directory currently being processed.

This is the full path to the source directory that is currently being processed by cmake.

When run in `cmake -P` script mode, CMake sets the variables `CMAKE_BINARY_DIR`, `CMAKE_SOURCE_DIR`, `CMAKE_CURRENT_BINARY_DIR` and `CMAKE_CURRENT_SOURCE_DIR` to the current working directory.

Modifying `CMAKE_CURRENT_SOURCE_DIR` has undefined behavior.