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Compiler - Usage

Difficulty: 🟡 Intermediate
Time: 25 minutes

📚 What you’ll learn

Basic Usage

Interpreter Execution

# Basic
./build/bin/cm run program.cm

# Multiple files (Future)
./build/bin/cm run main.cm lib.cm

# From stdin
echo 'int main() { println("Hello"); return 0; }' | ./build/bin/cm run -

Compilation

# Generate executable
./build/bin/cm compile program.cm -o program

# Default output (a.out)
./build/bin/cm compile program.cm

# Run
./program

Subcommands

run - Interpreter

cm run program.cm

Pros/Cons:

compile - Compilation

cm compile program.cm -o output

Pros/Cons:

check - Syntax & Type Checking

cm check program.cm

Pros/Cons:

Compiler Options

Optimization Levels

# No optimization (Debug)
cm compile program.cm -O0

# Basic optimization
cm compile program.cm -O1

# Standard optimization (Recommended)
cm compile program.cm -O2

# Maximum optimization
cm compile program.cm -O3

Target Specification

# Native code (Default)
cm compile program.cm -o program

# WebAssembly
cm compile program.cm --target=wasm -o program.wasm

# JavaScript
cm compile program.cm --target=js -o program.js

Output Formats

# Executable (Default)
cm compile program.cm -o program

# LLVM IR
cm compile program.cm --emit-llvm -o program.ll

# Assembly
cm compile program.cm --emit-asm -o program.s

Debugging Options

Debug Mode

# Show runtime debug info
cm run program.cm --debug

# Short option
cm run program.cm -d

Compile with Debug Info

# Include debug symbols
cm compile program.cm -g -o program_debug

# Debug with GDB
gdb ./program_debug

Next Steps

✅ Understood cm command basics
✅ Learned debugging methods
✅ Learned optimization options
✅ Understood targets (Native/WASM/JS)
⏭️ Next, learn about LLVM Backend

Previous: String Operations
Next: LLVM Backend

Last Updated: 2026-02-10