Cargo_Profiles.toml

# Fast debug builds but with optimized dependencies
[profile.dev.package."*"]
opt-level = 3

# Testing Profile
[profile.test]
opt-level = 2           # Faster test execution
debug = true            # Keep debug info for test failures

# Paranoid (Maximum Safety Checks)
[profile.paranoid]
inherits = "release"
overflow-checks = true
debug-assertions = true
incremental = false

# Benchmarking Profile
[profile.bench]
inherits = "release"
lto = "fat"
codegen-units = 1
debug = true            # Keep symbols for profiling tools

# Smaller release binary
[profile.release]
opt-level = "z"
lto = true

# Best for Speed
[profile.release]
opt-level = 3           # Maximum optimization
lto = "fat"             # Link-time optimization across all crates
codegen-units = 1       # Better optimization at cost of compile time
panic = "abort"         # Smaller binary, slightly faster (no unwinding)
strip = false           # Keep symbols if you need debugging, otherwise true

# Best for File Size
[profile.release]
opt-level = "z"         # Optimize aggressively for size
lto = "fat"             # Link-time optimization, removes unused code
codegen-units = 1       # Better optimization
panic = "abort"         # No unwinding code
strip = true            # Remove debugging symbols

# Additional size reduction techniques:
[profile.release]
opt-level = "z"
lto = "fat"
codegen-units = 1
panic = "abort"
strip = true

# Also add these in [package.metadata] or you can use cargo flags
# cargo build --release -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort

# Post Build Compression
upx --best --lzma your-binary  # Can reduce size by 50-70%

# WebAssembly Profile
[profile.wasm]
inherits = "release"
opt-level = "z"         # Size critical for web
lto = true
panic = "abort"         # WASM doesn't support unwinding well
strip = true