[externals/stb] only include JPEG functions, disable all others (#4179)

we use JPEG only with STB, dont need the others
which are included in the final binary, after gc+lto

this doesnt affect stb_dxt, which still includes all required BCn stuff

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4179
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/common/stb.cpp

@@ -1,8 +1,12 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#define STB_IMAGE_IMPLEMENTATION
-#define STB_IMAGE_RESIZE_IMPLEMENTATION
-#define STB_IMAGE_WRITE_IMPLEMENTATION
+#define STB_IMAGE_IMPLEMENTATION 1
+#define STB_IMAGE_RESIZE_IMPLEMENTATION 1
+#define STB_IMAGE_WRITE_IMPLEMENTATION 1
+#define STBI_ONLY_JPEG 1
 
 #include "common/stb.h"

src/common/stb.h

@@ -1,8 +1,12 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
 
+#define STBI_ONLY_JPEG 1
 #include <stb_image.h>
 #include <stb_image_resize.h>
 #include <stb_image_write.h>

src/core/hle/service/ns/read_only_application_control_data_interface.cpp

@@ -7,10 +7,12 @@
 #include <algorithm>
 #include <vector>
 #include <optional>
+#include <string>
+
+#define STBI_ONLY_JPEG 1
 #include <stb_image.h>
 #include <stb_image_resize.h>
 #include <stb_image_write.h>
-#include <string>
 
 #include "common/settings.h"
 #include "core/file_sys/control_metadata.h"