[iOS - Swift] Build Setting 개념 - 목차

1. Architecture 개념 (archs, EXCLUDED_ARCHS, excluded architecture  ONLY_ACTIVE_ARCH, Valid Architectures, arm64, x86_64)

2. Dynamic Framework, Static Framework 개념

3. OTHER_SWIFT_FLAGS ($inherited, -Xfrontend -debug-time-function-bodies, -Xfrontend -warn-long-expression-type-checking)

4. ENABLE_TESTABILITY

5. GCC_OPTIMIZATION_LEVEL (Apple Clang, -O0, O1, -O, -O3, -Os, -Ofast, -Oz)