Running SDL2 on MacOS

嘗試在 MacOs 上 玩下SDL2，但是遇到坑了，簡單紀錄下。

Try to install SDL2 on Mac, but have some issues. As a record:

machine: macbook pro - M2 OS: Sonoma 14.0 Homebrew version: 4.2.0 Date issue: 2023-12-23

用 Homebrew 安裝 SDL2，然後在 C include SDL2/SDL.h， 之後進行編譯系統會顯示 fatal error： ‘SDL2.h‘ file not found。

透過 homebrew 直接安裝 SDL2:

brew search sdl2

==> Formulae
sdl2 ✔                  sdl2_gfx ✔              sdl2_image ✔            sdl2_mixer ✔            sdl2_net ✔              sdl2_sound ✔            sdl2_ttf ✔

起一個簡單的 C program：

#include <stdio.h>
#include <SDL2/SDL.h>

int main() {
    printf("Game is running...\n");
    return 0;
}

編譯：

gcc -Wall -std=c99 ./src/*.c -o game

Error:

./src/main.c:2:10: fatal error: 'SDL2.h' file not found
#include <SDL2.h>
         ^~~~~~~~
1 error generated.

最後我辦法是手動把 homebrew 的 SDL2 拉到項目裡來

Homebrew 安裝 SDL2 的位置：

/opt/homebrew/Cellar/sdl2

複製 SDL2 include 到自己的項目：

cp -R /opt/homebrew/Cellar/sdl2/2.28.5/include ~/project/

複製 SDL2 lib 到自己的項目：

cp -R /opt/homebrew/Cellar/sdl2/2.28.5/lib ~/project/

最後修改 build command, 加載 includ folder 和 lib folder :

gcc -Wall -std=c99 -I include -L lib -lSDL2-2.0.0 ./src/*.c -o game

編譯成功！