Why Can't I Compile or Link My SDL2 Code?

Unable to Compile or Run SDL2 Code

Common Errors:

• "SDL.h: No such file or directory" (compilation)
• SDL_main-related errors (compilation or linking)
• Undefined references to functions

SDL.h Not Found:

Add -Ipath compiler flag, where path is the directory containing SDL.h.

SDL_main Problems:

Ensure your main function has the signature int main(int, char **).
Remove #define SDL_MAIN_HANDLED and #undef main.

Undefined References to Functions:

• SDL Functions: Add linker flags: -lmingw32 -lSDL2main -lSDL2 -Lpath, ensuring path points to the directory containing libSDL2.dll.a and libSDL2main.a.
• WinMain Only: Check linker flags and ensure the correct libSDL2main.a file is used (32-bit or 64-bit matching your compiler).
• Other Functions: Ensure libSDL2.a is not being used instead of libSDL2.dll.a in linking.

DLL Issues:

Refer to the linked article for debugging DLL issues in MinGW.

Alternative Solution:

Consider using MSYS2 for prebuilt libraries and automated flag determination using pkg-config.

Additional Problems:

Hide Console Window: Add -mwindows linker flag.
Missing Icon: Create a custom .ico file, convert it using windres, and link it using -o.

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