By default, examples in examples/ folder are not built. To enable them, use --with-examples configure option. For example:
./waf configure --with-examples ./waf
There are two ways to add new examples, depending on their complexity:
For simple examples that have a single translation unit, the .cpp file can be directly put in examples/ folder and it will be automatically compiled on the next run of ./waf. Name of the compiled binary will be determined by the base name of the .cpp file. For example, examples/foo.cpp will be compiled into binary foo in <build>/examples folder:
echo "int main() { return 0; }" > examples/foo.cpp
./waf
# ... Compiling examples/foo.cpp
# ... Linking build/examples/foo
# To run the example
./build/examples/foo
For more complex examples that contain multiple translation units, one can use the following directory structure:
Create a directory under examples/ folder (e.g., examples/bar). The name of this directory will determine the name of the compiled binary (<build>/examples/bar/bar)
Place any number of translation units (e.g., examples/bar/a.cpp, examples/bar/b.cpp, ...) in this directory. All .cpp files in this directory will be compiled and linked together to produce the binary of the example. One of the .cpp files should contain the main() function.
For example:
mkdir examples/bar
echo "int bar(); int main() { return bar(); }" > examples/bar/a.cpp
echo "int bar() { return 10; } " > examples/bar/b.cpp
./waf
# ... Compiling examples/bar/a.cpp
# ... Compiling examples/bar/b.cpp
# ... Linking build/examples/bar/bar
# To run the example
./build/examples/bar/bar