SDL_image: cmake: added IMG_stb.c to sources too, in case it is used some day.

From 0481a3f57a0efa3274439ac07789295a2b6a716e Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Mon, 9 May 2022 23:16:20 +0300
Subject: [PATCH] cmake: added IMG_stb.c to sources too, in case it is used
 some day.

---
 CMakeLists.txt | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index db5cef4..4689f64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,10 @@
+# FIXME: CMAKE SUPPORT IN SDL2_image IS VERY INCOMPLETE YET !!!
+#
+# FIXME: make it able build against system codec libraries, too.
+# FIXME: handle library versioning.
+# FIXME: test accross different target platforms.
+#
+
 cmake_minimum_required(VERSION 3.3.2)
 project(SDL_image C)
 
@@ -7,12 +14,6 @@ set(MINOR_VERSION 5)
 set(MICRO_VERSION 0)
 set(FULL_VERSION "${MAJOR_VERSION}.${MINOR_VERSION}.${MICRO_VERSION}")
 
-# FIXME: CMAKE SUPPORT IN SDL2_image IS VERY INCOMPLETE YET !!!
-#
-# FIXME: make it able build against system codec libraries, too.
-# FIXME: handle library versioning.
-# FIXME: test accross different target platforms.
-
 if (NOT ANDROID AND NOT (TARGET SDL2 OR TARGET SDL2-static))
 	find_package(SDL2 REQUIRED)
 endif()
@@ -111,7 +112,9 @@ endif()
 target_sources(SDL2_image PRIVATE IMG.c IMG_png.c IMG_bmp.c IMG_gif.c
 		IMG_jpg.c IMG_lbm.c IMG_pcx.c IMG_pnm.c IMG_svg.c IMG_tga.c
 		IMG_tif.c IMG_webp.c IMG_WIC.c IMG_xcf.c IMG_xpm.c IMG_xv.c
-		IMG_qoi.c IMG_avif.c IMG_jxl.c IMG_xxx.c ${IMAGEIO_SOURCES})
+		IMG_qoi.c IMG_avif.c IMG_jxl.c IMG_stb.c IMG_xxx.c
+		${IMAGEIO_SOURCES}
+)
 
 target_compile_definitions(SDL2_image PRIVATE
 		-DLOAD_BMP -DLOAD_GIF -DLOAD_LBM -DLOAD_PCX -DLOAD_PNM