Only keep SDL2 support. Left the other flags commented so that people can tweak it.

Updated Readme.md for instructions.

Makefile

@@ -29,8 +29,8 @@ CFLAGS 				:= -O0 -g $(WARNINGS)
 DEFINES				:= -D SIMULATOR=1 -D LV_BUILD_TEST=0
 
 # Include simulator inc folder first so lv_conf.h from custom UI can be used instead
-INC 				:= -I./ui/simulator/inc/ -I./ -I./lvgl/ -I/usr/include/freetype2 -L/usr/local/lib
+INC 				:= -I./ui/simulator/inc/ -I./ -I./lvgl/ #-I/usr/include/freetype2 -L/usr/local/lib
-LDLIBS	 			:= -lSDL2 -lm -lfreetype -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread
+LDLIBS	 			:= -lSDL2 -lm #-lfreetype -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread
 BIN 				:= $(BIN_DIR)/demo
 
 COMPILE				= $(CC) $(CFLAGS) $(INC) $(DEFINES)

README.md

@@ -21,7 +21,7 @@ To allow debugging inside VSCode you will also require a GDB [extension](https:/
 
 Clone the PC project and the related sub modules:
 
-```
+```bash
 git clone --recursive https://github.com/lvgl/lv_port_pc_vscode
 ```
 
@@ -29,10 +29,38 @@ git clone --recursive https://github.com/lvgl/lv_port_pc_vscode
 You can download SDL from https://www.libsdl.org/
 
 On on Linux you can install it via terminal:
-```
+```bash
 sudo apt-get update && sudo apt-get install -y build-essential libsdl2-dev
 ```
 
+### Optional library
+There are also FreeType and FFmpeg support. You can install FreeType support with:
+```bash
+# FreeType support
+wget https://kumisystems.dl.sourceforge.net/project/freetype/freetype2/2.13.2/freetype-2.13.2.tar.xz
+tar -xf freetype-2.13.2.tar.xz
+cd freetype-2.13.2
+make
+make install
+```
+
+The FFmpeg support can be installed with:
+```bash
+# FFmpeg support
+git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
+cd ffmpeg
+git checkout release/6.0
+./configure --disable-all --disable-autodetect --disable-podpages --disable-asm --enable-avcodec --enable-avformat --enable-decoders --enable-encoders --enable-demuxers --enable-parsers --enable-protocol='file' --enable-swscale --enable-zlib
+make
+sudo make install
+```
+
+And then remove all the comments in the `Makefile` on `INC` and `LDLIBS` lines. They should be:
+```Makefile
+INC 				:= -I./ui/simulator/inc/ -I./ -I./lvgl/ -I/usr/include/freetype2 -L/usr/local/lib
+LDLIBS	 			:= -lSDL2 -lm -lfreetype -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread
+```
+
 ### Setup
 To allow custom UI code an `lv_conf.h` file placed at `ui/simulator/inc` will automatically override this projects lv_conf.h file. By default code under `ui` is ignored so you can reuse this repository for multiple projects. You will need to place a call from `main.c` to your UI's entry function.
 

lv_conf.h

@@ -536,23 +536,23 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 #endif
 
 /*PNG decoder library*/
-#define LV_USE_PNG 1
+#define LV_USE_PNG 0
 
 /*BMP decoder library*/
-#define LV_USE_BMP 1
+#define LV_USE_BMP 0
 
 /* JPG + split JPG decoder library.
  * Split JPG is a custom format optimized for embedded systems. */
-#define LV_USE_SJPG 1
+#define LV_USE_SJPG 0
 
 /*GIF decoder library*/
-#define LV_USE_GIF 1
+#define LV_USE_GIF 0
 
 /*QR code library*/
-#define LV_USE_QRCODE 1
+#define LV_USE_QRCODE 0
 
 /*FreeType library*/
-#define LV_USE_FREETYPE 1
+#define LV_USE_FREETYPE 0
 #if LV_USE_FREETYPE
     /*Memory used by FreeType to cache characters [bytes] (-1: no caching)*/
     #define LV_FREETYPE_CACHE_SIZE (16 * 1024)
@@ -573,7 +573,7 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 
 /*FFmpeg library for image decoding and playing videos
  *Supports all major image formats so do not enable other image decoder with it*/
-#define LV_USE_FFMPEG 1
+#define LV_USE_FFMPEG 0
 #if LV_USE_FFMPEG
     /*Dump input information to stderr*/
     #define LV_FFMPEG_DUMP_FORMAT 0

main/src/main.c

@@ -66,7 +66,7 @@ static int tick_thread(void *data);
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
-
+#if 0
 static void user_image_demo()
 {
   lv_obj_t * img = lv_gif_create(lv_scr_act());
@@ -151,6 +151,7 @@ static void user_image_demo()
     lv_ffmpeg_player_set_cmd(player, LV_FFMPEG_PLAYER_CMD_START);
     lv_obj_align(player, LV_ALIGN_TOP_MID, 0, 20);
 }
+#endif
 
 int main(int argc, char **argv)
 {
@@ -181,13 +182,13 @@ int main(int argc, char **argv)
 //  lv_example_flex_3();
 //  lv_example_label_1();
 
-//  lv_demo_widgets();
+  lv_demo_widgets();
 //  lv_demo_keypad_encoder();
 //  lv_demo_benchmark();
 //  lv_demo_stress();
 //  lv_demo_music();
 
-  user_image_demo();
+//  user_image_demo();
 
   while(1) {
     /* Periodically call the lv_task handler.