getting error in PC simulator

[mithunkamat]

21:54:18 **** Incremental Build of configuration Debug for project pc_simulator ****
Info: Internal Builder is used for build
gcc -o pc_simulator "lv_drivers\display\R61581.o" "lv_drivers\display\SSD1963.o" "lv_drivers\display\ST7565.o" "lv_drivers\display\fbdev.o" "lv_drivers\display\monitor.o" "lv_drivers\indev\FT5406EE8.o" "lv_drivers\indev\XPT2046.o" "lv_drivers\indev\keyboard.o" "lv_drivers\indev\mouse.o" "lv_examples\lv_apps\benchmark\benchmark.o" "lv_examples\lv_apps\benchmark\img_benchmark_bg.o" "lv_examples\lv_apps\demo\demo.o" "lv_examples\lv_apps\demo\img_bubble_pattern.o" "lv_examples\lv_apps\sysmon\sysmon.o" "lv_examples\lv_apps\terminal\terminal.o" "lv_examples\lv_apps\tpcal\tpcal.o" "lv_examples\lv_tests\lv_test_group\lv_test_group.o" "lv_examples\lv_tests\lv_test_obj\lv_test_obj.o" "lv_examples\lv_tests\lv_test_objx\lv_test_bar\lv_test_bar.o" "lv_examples\lv_tests\lv_test_objx\lv_test_btn\lv_test_btn.o" "lv_examples\lv_tests\lv_test_objx\lv_test_btnm\lv_test_btnm.o" "lv_examples\lv_tests\lv_test_objx\lv_test_cb\lv_test_cb.o" "lv_examples\lv_tests\lv_test_objx\lv_test_chart\lv_test_chart.o" "lv_examples\lv_tests\lv_test_objx\lv_test_cont\lv_test_cont.o" "lv_examples\lv_tests\lv_test_objx\lv_test_ddlist\lv_test_ddlist.o" "lv_examples\lv_tests\lv_test_objx\lv_test_gauge\lv_test_gauge.o" "lv_examples\lv_tests\lv_test_objx\lv_test_img\img_flower_icon.o" "lv_examples\lv_tests\lv_test_objx\lv_test_img\lv_test_img.o" "lv_examples\lv_tests\lv_test_objx\lv_test_kb\lv_test_kb.o" "lv_examples\lv_tests\lv_test_objx\lv_test_label\lv_test_label.o" "lv_examples\lv_tests\lv_test_objx\lv_test_led\lv_test_led.o" "lv_examples\lv_tests\lv_test_objx\lv_test_line\lv_test_line.o" "lv_examples\lv_tests\lv_test_objx\lv_test_list\lv_test_list.o" "lv_examples\lv_tests\lv_test_objx\lv_test_lmeter\lv_test_lmeter.o" "lv_examples\lv_tests\lv_test_objx\lv_test_mbox\lv_test_mbox.o" "lv_examples\lv_tests\lv_test_objx\lv_test_page\lv_test_page.o" "lv_examples\lv_tests\lv_test_objx\lv_test_roller\lv_test_roller.o" "lv_examples\lv_tests\lv_test_objx\lv_test_slider\lv_test_slider.o" "lv_examples\lv_tests\lv_test_objx\lv_test_sw\lv_test_sw.o" "lv_examples\lv_tests\lv_test_objx\lv_test_ta\lv_test_ta.o" "lv_examples\lv_tests\lv_test_objx\lv_test_tabview\lv_test_tabview.o" "lv_examples\lv_tests\lv_test_objx\lv_test_win\lv_test_win.o" "lv_examples\lv_tests\lv_test_stress\lv_test_stress.o" "lv_examples\lv_tests\lv_test_theme\lv_test_theme.o" "lv_examples\lv_tutorial\0_porting\lv_tutorial_porting.o" "lv_examples\lv_tutorial\10_keyboard\lv_tutorial_keyboard.o" "lv_examples\lv_tutorial\1_hello_world\lv_tutorial_hello_world.o" "lv_examples\lv_tutorial\2_objects\lv_tutorial_objects.o" "lv_examples\lv_tutorial\3_styles\lv_tutorial_styles.o" "lv_examples\lv_tutorial\4_themes\lv_tutorial_themes.o" "lv_examples\lv_tutorial\5_antialiasing\lv_tutorial_antialiasing.o" "lv_examples\lv_tutorial\6_images\img_red_flower.o" "lv_examples\lv_tutorial\6_images\lv_tutorial_images.o" "lv_examples\lv_tutorial\7_fonts\lv_tutorial_fonts.o" "lv_examples\lv_tutorial\7_fonts\ubuntu_40_ascii.o" "lv_examples\lv_tutorial\7_fonts\ubuntu_40_cyrillic.o" "lv_examples\lv_tutorial\8_animations\lv_tutorial_animations.o" "lv_examples\lv_tutorial\9_responsive\lv_tutorial_responsive.o" "lvgl\lv_core\lv_group.o" "lvgl\lv_core\lv_indev.o" "lvgl\lv_core\lv_obj.o" "lvgl\lv_core\lv_refr.o" "lvgl\lv_core\lv_style.o" "lvgl\lv_core\lv_vdb.o" "lvgl\lv_draw\lv_draw.o" "lvgl\lv_draw\lv_draw_rbasic.o" "lvgl\lv_draw\lv_draw_vbasic.o" "lvgl\lv_hal\lv_hal_disp.o" "lvgl\lv_hal\lv_hal_indev.o" "lvgl\lv_hal\lv_hal_tick.o" "lvgl\lv_misc\lv_anim.o" "lvgl\lv_misc\lv_area.o" "lvgl\lv_misc\lv_circ.o" "lvgl\lv_misc\lv_color.o" "lvgl\lv_misc\lv_font.o" "lvgl\lv_misc\lv_fonts\dejavu_10.o" "lvgl\lv_misc\lv_fonts\dejavu_10_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_10_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_10_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_10_sup.o" "lvgl\lv_misc\lv_fonts\dejavu_20.o" "lvgl\lv_misc\lv_fonts\dejavu_20_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_20_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_20_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_20_sup.o" "lvgl\lv_misc\lv_fonts\dejavu_30.o" "lvgl\lv_misc\lv_fonts\dejavu_30_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_30_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_30_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_30_sup.o" "lvgl\lv_misc\lv_fonts\dejavu_40.o" "lvgl\lv_misc\lv_fonts\dejavu_40_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_40_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_40_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_40_sup.o" "lvgl\lv_misc\lv_fonts\dejavu_60.o" "lvgl\lv_misc\lv_fonts\dejavu_60_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_60_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_60_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_60_sup.o" "lvgl\lv_misc\lv_fonts\dejavu_80.o" "lvgl\lv_misc\lv_fonts\dejavu_80_cyrillic.o" "lvgl\lv_misc\lv_fonts\dejavu_80_latin_ext_a.o" "lvgl\lv_misc\lv_fonts\dejavu_80_latin_ext_b.o" "lvgl\lv_misc\lv_fonts\dejavu_80_sup.o" "lvgl\lv_misc\lv_fonts\symbol_10_basic.o" "lvgl\lv_misc\lv_fonts\symbol_10_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_10_file.o" "lvgl\lv_misc\lv_fonts\symbol_20_basic.o" "lvgl\lv_misc\lv_fonts\symbol_20_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_20_file.o" "lvgl\lv_misc\lv_fonts\symbol_30_basic.o" "lvgl\lv_misc\lv_fonts\symbol_30_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_30_file.o" "lvgl\lv_misc\lv_fonts\symbol_40_basic.o" "lvgl\lv_misc\lv_fonts\symbol_40_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_40_file.o" "lvgl\lv_misc\lv_fonts\symbol_60_basic.o" "lvgl\lv_misc\lv_fonts\symbol_60_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_60_file.o" "lvgl\lv_misc\lv_fonts\symbol_80_basic.o" "lvgl\lv_misc\lv_fonts\symbol_80_feedback.o" "lvgl\lv_misc\lv_fonts\symbol_80_file.o" "lvgl\lv_misc\lv_fs.o" "lvgl\lv_misc\lv_ll.o" "lvgl\lv_misc\lv_mem.o" "lvgl\lv_misc\lv_task.o" "lvgl\lv_misc\lv_templ.o" "lvgl\lv_misc\lv_trigo.o" "lvgl\lv_misc\lv_txt.o" "lvgl\lv_misc\lv_ufs.o" "lvgl\lv_objx\lv_bar.o" "lvgl\lv_objx\lv_btn.o" "lvgl\lv_objx\lv_btnm.o" "lvgl\lv_objx\lv_cb.o" "lvgl\lv_objx\lv_chart.o" "lvgl\lv_objx\lv_cont.o" "lvgl\lv_objx\lv_ddlist.o" "lvgl\lv_objx\lv_gauge.o" "lvgl\lv_objx\lv_img.o" "lvgl\lv_objx\lv_kb.o" "lvgl\lv_objx\lv_label.o" "lvgl\lv_objx\lv_led.o" "lvgl\lv_objx\lv_line.o" "lvgl\lv_objx\lv_list.o" "lvgl\lv_objx\lv_lmeter.o" "lvgl\lv_objx\lv_mbox.o" "lvgl\lv_objx\lv_objx_templ.o" "lvgl\lv_objx\lv_page.o" "lvgl\lv_objx\lv_roller.o" "lvgl\lv_objx\lv_slider.o" "lvgl\lv_objx\lv_sw.o" "lvgl\lv_objx\lv_ta.o" "lvgl\lv_objx\lv_tabview.o" "lvgl\lv_objx\lv_win.o" "lvgl\lv_themes\lv_theme.o" "lvgl\lv_themes\lv_theme_alien.o" "lvgl\lv_themes\lv_theme_default.o" "lvgl\lv_themes\lv_theme_material.o" "lvgl\lv_themes\lv_theme_mono.o" "lvgl\lv_themes\lv_theme_night.o" "lvgl\lv_themes\lv_theme_templ.o" "lvgl\lv_themes\lv_theme_zen.o" main.o -lSDL2main -lSDL2
C:/Program Files (x86)/CodeBlocks/MinGW/bin/../lib/gcc/mingw32/4.9.2/../../../libmingw32.a(main.o):main.c:(.text.startup+0xa7): undefined reference to `WinMain@16'
collect2.exe: error: ld returned 1 exit status

Above is the error I am getting while trying to compile in eclipse. I had done all the steps described on the website.

[kisvegabor]

Hi,

are you sure you are using 32 bit MingGw and 32 bit SDL (or both 64 bit)?

[helezh]

hi! happy new year! this err i have get. you can change "main" to "winmain"

[helezh]

i have posted the issure,you try to find it

[helezh]

issue #53

[memen45]

Ran into the same issue this afternoon: undefined reference to winmain, after a clean install of eclipse and mingw. Finally fixed it by adding 'mingw32' to libs in project properties (there should be three listed under libs and the order matters: mingw32, SDLmain, SDL, is the correct order). Maybe this should be added to the 'getting started' - steps that are provided on the site?

[kisvegabor]

Than you! I will add it to the website as you suggested.

[kisvegabor]

Is it required only for 32 it MinGW?

[memen45]

As far as I can see, I installed the 64 bit version of mingw and I copied the 64bit versions of all the files to the mingw installation directory. I found the fix here: https://stackoverflow.com/a/48328724

Besides this, I ran into some other problems before I could get it started:

• The directories stated on the get started page https://littlevgl.com/pc-simulator are not completely correct. Steps 3 and 4 are:

3. Copy ..._mingw32/include/SDL2 folder to C:/MinGW/include
4. Copy ..._mingw32/lib/ content to C:/MinGW/lib
   While with my clean install it worked after changing it to "C:\ ...\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\x86_64-w64-mingw32*" (with * for both include and lib directories). It is confusing, since the include and lib directories are also present in "C:\ ...\mingw-w64*", but will not work there.

• Clean build was not possible -> In the .cproject file there is a 'cleanCommand' that is set to 'rm -rf', however this does not work on windows (fix: install coreutils or replace 'rm -rf' with something supported by windows like 'del').

Not sure whether to open a new issue for this or not, but since you are looking at the steps from the site anyways, I thought I'd post it here as well.

[kisvegabor]

I found the fix here: https://stackoverflow.com/a/48328724

I edited the link because is was misformatted: [https://stackoverflow.com/a/48328724](url) -> https://stackoverflow.com/a/48328724
GitHub recognizes the links as link. If you want to name link you can use: [my_link](www.something.com)

Thank you for the explanation. I checked again the paths on the Windows machine. I used C:\MinGW\x86_64-w64-mingw32\* ('*' also for lib and include)

So it's really not the same as on the webpage but also not the same as yours because the \x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64 part is missing for me.

[memen45]

That is weird, but maybe adding the last directory name "...\x86_64-w64-mingw32*" would clarify this sufficiently (as that is the same in both our cases).

[kisvegabor]

Yeah it's really weird. Anyway I added the \x86_64-w64-mingw32\ part as you suggested.

Thank you very much!

[kisvegabor]

As this issue seems solved I close it.
If you find other build related issues on PC please open an issue in the pc_simulator repository instead.

Thank you sharing you experiences! :)