← C17 MOC · 🎯 Mission · Lesson 0001

LR-0003: CMake SDL2 Resolution & Integer Precision Diagnostics

Configuring CMake with both find_package(SDL2) and pkg-config fallback successfully resolves SDL2 headers on macOS (Homebrew /opt/homebrew/include/SDL2) and Linux. Enabling -Wconversion immediately flagged an implicit integer truncation bug in src/main.c where SDL_Keycode (32-bit integer) was assigned to char (8-bit integer).

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🔍 Evidence

• CMakeLists.txt successfully compiled all 7 object files and linked ./build/chip8 with ASan/UBSan instrumentation (Toolchain Reference).
• Compiler emitted -Wimplicit-int-conversion on src/main.c:41:39.
• Connects with integer sizing and width rules mapped during the C Systems Diagnostic.

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🚀 Implications for Curriculum

• Transition to Lesson 0002: Safe Binary File I/O & ROM Loading into RAM at 0x200.
• Enforce explicit integer sizing (int32_t vs char vs uint8_t) across all emulator structs to avoid implicit narrowing casts.