lean4-htt/doc/examples/compiler

In this example, we use the Lean C++ code generator to construct a simple program. Our project contains two files:

• test.lean: a simple Lean program
• main.cpp: a C++ frontend for invoking the function foo defined at test.lean.

1- Generate test.cpp. Remark: we must have the file leanpkg.path in the current directory.

../../../bin/lean --cpp=test.cpp test.lean

2- Generate test program using g++ or clang++

g++ -o test --std=c++11 -I ../../../src test.cpp main.cpp ../../../bin/libleanstatic.a -lgmp -pthread

Remark: if you built libleanstatic.a using jemalloc, you also need to include option -ljemalloc in the previous step.

3- Execute test program

./test 100

It should produce Result: 5050