Homebrew Question rendering image through sdl2 causes an error in compiling

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Deleted User

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Hey
I want to develop Homebrew games but what is a game without graphics.
correct... not very much.
so i tried installing SDL2 and that happens when i compile a image renderer
my sample picture is this: (painted it myself. no copyright.)

the code is from this example github page : https://gist.githubusercontent.com/...a7ffdf0312f728a3e26bee369d5ef7be48/openicon.c
Code: 
#include <stdio.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>

#define WIDTH 800
#define HEIGHT 600
#define IMG_PATH "exit.png"                  <--- this got edited and the 800x600 pixels are correct: now there is a: romfs:/image.png

int main (int argc, char *argv[]) {

    // variable declarations
    SDL_Window *win = NULL;
    SDL_Renderer *renderer = NULL;
    SDL_Texture *img = NULL;
    int w, h; // texture width & height
    
    // Initialize SDL.
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
            return 1;
    
    // create the window and renderer
    // note that the renderer is accelerated
    win = SDL_CreateWindow("Image Loading", 100, 100, WIDTH, HEIGHT, 0);
    renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
    
    // load our image
    img = IMG_LoadTexture(renderer, IMG_PATH);
    SDL_QueryTexture(img, NULL, NULL, &w, &h); // get the width and height of the texture
    // put the location where we want the texture to be drawn into a rectangle
    // I'm also scaling the texture 2x simply by setting the width and height
    SDL_Rect texr; texr.x = WIDTH/2; texr.y = HEIGHT/2; texr.w = w*2; texr.h = h*2;
    
    // main loop
    while (1) {
        
        // event handling
        SDL_Event e;
        if ( SDL_PollEvent(&e) ) {
            if (e.type == SDL_QUIT)
                break;
            else if (e.type == SDL_KEYUP && e.key.keysym.sym == SDLK_ESCAPE)
                break;
        }
        
        // clear the screen
        SDL_RenderClear(renderer);
        // copy the texture to the rendering context
        SDL_RenderCopy(renderer, img, NULL, &texr);
        // flip the backbuffer
        // this means that everything that we prepared behind the screens is actually shown
        SDL_RenderPresent(renderer);
        
    }
    
    SDL_DestroyTexture(img);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(win);
    
    return 0;
}


this gave me this error:
Code: 
main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE  -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
linking image.elf
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: main.o: in function `main':
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp:27: undefined reference to `IMG_LoadTexture'
collect2.exe: error: ld returned 1 exit status
make[1]: *** [/opt/devkitpro/libnx/switch_rules:80: /home/Anwender/Desktop/FuseeGelee/image/image.elf] Error 1
make: *** [Makefile:165: build] Error 2

It gaves me a Makefile error so i thought i need to add a libary.
Code: 
LIBS    :=    -lSDL2_image `sdl2-config --libs`
i added this line to the Makefile and overwrote the old one:


But i got even more errors:
Code: 
main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE  -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
linking image.elf
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libSDL2_image.a(IMG_jpg.o): in function `IMG_InitJPG':
/home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:88: undefined reference to `jpeg_calc_output_dimensions'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:89: undefined reference to `jpeg_CreateDecompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:90: undefined reference to `jpeg_destroy_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:91: undefined reference to `jpeg_finish_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:88: undefined reference to `jpeg_calc_output_dimensions'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:92: undefined reference to `jpeg_read_header'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:93: undefined reference to `jpeg_read_scanlines'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:94: undefined reference to `jpeg_resync_to_restart'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:95: undefined reference to `jpeg_start_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:89: undefined reference to `jpeg_CreateDecompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:96: undefined reference to `jpeg_CreateCompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:97: undefined reference to `jpeg_start_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:98: undefined reference to `jpeg_set_quality'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:99: undefined reference to `jpeg_set_defaults'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:90: undefined reference to `jpeg_destroy_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:100: undefined reference to `jpeg_write_scanlines'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:101: undefined reference to `jpeg_finish_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:102: undefined reference to `jpeg_destroy_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:103: undefined reference to `jpeg_std_error'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:91: undefined reference to `jpeg_finish_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:92: undefined reference to `jpeg_read_header'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:93: undefined reference to `jpeg_read_scanlines'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:94: undefined reference to `jpeg_resync_to_restart'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:95: undefined reference to `jpeg_start_decompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:96: undefined reference to `jpeg_CreateCompress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:97: undefined reference to `jpeg_start_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:98: undefined reference to `jpeg_set_quality'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:99: undefined reference to `jpeg_set_defaults'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:100: undefined reference to `jpeg_write_scanlines'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:101: undefined reference to `jpeg_finish_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:102: undefined reference to `jpeg_destroy_compress'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_jpg.c:103: undefined reference to `jpeg_std_error'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libSDL2_image.a(IMG_png.o): in function `IMG_InitPNG':
/home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:140: undefined reference to `png_create_info_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:141: undefined reference to `png_create_read_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:142: undefined reference to `png_destroy_read_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:143: undefined reference to `png_get_IHDR'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:144: undefined reference to `png_get_io_ptr'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:145: undefined reference to `png_get_channels'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:146: undefined reference to `png_get_PLTE'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:147: undefined reference to `png_get_tRNS'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:148: undefined reference to `png_get_valid'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:149: undefined reference to `png_read_image'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:150: undefined reference to `png_read_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:151: undefined reference to `png_read_update_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:152: undefined reference to `png_set_expand'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:153: undefined reference to `png_set_gray_to_rgb'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:140: undefined reference to `png_create_info_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:154: undefined reference to `png_set_packing'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:155: undefined reference to `png_set_read_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:141: undefined reference to `png_create_read_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:156: undefined reference to `png_set_strip_16'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:142: undefined reference to `png_destroy_read_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:143: undefined reference to `png_get_IHDR'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:157: undefined reference to `png_set_interlace_handling'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:158: undefined reference to `png_sig_cmp'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:144: undefined reference to `png_get_io_ptr'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:145: undefined reference to `png_get_channels'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:160: undefined reference to `png_set_longjmp_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:162: undefined reference to `png_create_write_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:146: undefined reference to `png_get_PLTE'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:147: undefined reference to `png_get_tRNS'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:163: undefined reference to `png_destroy_write_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:164: undefined reference to `png_set_write_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:148: undefined reference to `png_get_valid'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:149: undefined reference to `png_read_image'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:165: undefined reference to `png_set_IHDR'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:166: undefined reference to `png_write_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:150: undefined reference to `png_read_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:151: undefined reference to `png_read_update_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:167: undefined reference to `png_set_rows'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:168: undefined reference to `png_write_png'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:152: undefined reference to `png_set_expand'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:153: undefined reference to `png_set_gray_to_rgb'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:169: undefined reference to `png_set_PLTE'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:154: undefined reference to `png_set_packing'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:155: undefined reference to `png_set_read_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:156: undefined reference to `png_set_strip_16'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:157: undefined reference to `png_set_interlace_handling'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:158: undefined reference to `png_sig_cmp'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:160: undefined reference to `png_set_longjmp_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:162: undefined reference to `png_create_write_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:163: undefined reference to `png_destroy_write_struct'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:164: undefined reference to `png_set_write_fn'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:165: undefined reference to `png_set_IHDR'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:166: undefined reference to `png_write_info'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:167: undefined reference to `png_set_rows'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:168: undefined reference to `png_write_png'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: /home/davem/projects/devkitpro/pacman-packages/switch/SDL2_image/src/SDL2_image-2.0.3/IMG_png.c:169: undefined reference to `png_set_PLTE'
collect2.exe: error: ld returned 1 exit status
make[1]: *** [/opt/devkitpro/libnx/switch_rules:80: /home/Anwender/Desktop/FuseeGelee/image/image.elf] Error 1
make: *** [Makefile:165: build] Error 2

thats my makefile:
Code: 
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif

TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/libnx/switch_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
#
# NO_ICON: if set to anything, do not use icon.
# NO_NACP: if set to anything, no .nacp file is generated.
# APP_TITLE is the name of the app stored in the .nacp file (Optional)
# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
# APP_VERSION is the version of the app stored in the .nacp file (Optional)
# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
# ICON is the filename of the icon (.jpg), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.jpg
#     - icon.jpg
#     - <libnx folder>/default_icon.jpg
#
# CONFIG_JSON is the filename of the NPDM config file (.json), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.json
#     - config.json
#   If a JSON file is provided or autodetected, an ExeFS PFS0 (.nsp) is built instead
#   of a homebrew executable (.nro). This is intended to be used for sysmodules.
#   NACP building is skipped as well.
#---------------------------------------------------------------------------------
TARGET        :=    $(notdir $(CURDIR))
BUILD        :=    build
SOURCES        :=    source
DATA        :=    data
INCLUDES    :=    include
ROMFS        :=    romfs

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH    :=    -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE

CFLAGS    :=    -g -Wall -O2 -ffunction-sections \
            $(ARCH) $(DEFINES)

CFLAGS    +=    -D__SWITCH__ $(INCLUDE) `sdl2-config --cflags`

CXXFLAGS    := $(CFLAGS) -fno-rtti -fno-exceptions

ASFLAGS    :=    -g $(ARCH)
LDFLAGS    =    -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

LIBS    :=    -lSDL2_image `sdl2-config --libs`                   <----- I Edited this line so the first compilation didnt had the lSDL2_image Libary included.

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS    := $(PORTLIBS) $(LIBNX)


#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT    :=    $(CURDIR)/$(TARGET)
export TOPDIR    :=    $(CURDIR)

export VPATH    :=    $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
            $(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR    :=    $(CURDIR)/$(BUILD)

CFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES    :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES    :=    $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
    export LD    :=    $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
    export LD    :=    $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES_BIN    :=    $(addsuffix .o,$(BINFILES))
export OFILES_SRC    :=    $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES     :=    $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN    :=    $(addsuffix .h,$(subst .,_,$(BINFILES)))

export INCLUDE    :=    $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
            $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
            -I$(CURDIR)/$(BUILD)

export LIBPATHS    :=    $(foreach dir,$(LIBDIRS),-L$(dir)/lib)

ifeq ($(strip $(CONFIG_JSON)),)
    jsons := $(wildcard *.json)
    ifneq (,$(findstring $(TARGET).json,$(jsons)))
        export APP_JSON := $(TOPDIR)/$(TARGET).json
    else
        ifneq (,$(findstring config.json,$(jsons)))
            export APP_JSON := $(TOPDIR)/config.json
        endif
    endif
else
    export APP_JSON := $(TOPDIR)/$(CONFIG_JSON)
endif

ifeq ($(strip $(ICON)),)
    icons := $(wildcard *.jpg)
    ifneq (,$(findstring $(TARGET).jpg,$(icons)))
        export APP_ICON := $(TOPDIR)/$(TARGET).jpg
    else
        ifneq (,$(findstring icon.jpg,$(icons)))
            export APP_ICON := $(TOPDIR)/icon.jpg
        endif
    endif
else
    export APP_ICON := $(TOPDIR)/$(ICON)
endif

ifeq ($(strip $(NO_ICON)),)
    export NROFLAGS += --icon=$(APP_ICON)
endif

ifeq ($(strip $(NO_NACP)),)
    export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
endif

ifneq ($(APP_TITLEID),)
    export NACPFLAGS += --titleid=$(APP_TITLEID)
endif

ifneq ($(ROMFS),)
    export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
endif

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)

$(BUILD):
    @[ -d $@ ] || mkdir -p $@
    @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
    @echo clean ...
ifeq ($(strip $(APP_JSON)),)
    @rm -fr $(BUILD) $(TARGET).nro $(TARGET).nacp $(TARGET).elf
else
    @rm -fr $(BUILD) $(TARGET).nsp $(TARGET).nso $(TARGET).npdm $(TARGET).elf
endif


#---------------------------------------------------------------------------------
else
.PHONY:    all

DEPENDS    :=    $(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ifeq ($(strip $(APP_JSON)),)

all    :    $(OUTPUT).nro

ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro    :    $(OUTPUT).elf $(OUTPUT).nacp
else
$(OUTPUT).nro    :    $(OUTPUT).elf
endif

else

all    :    $(OUTPUT).nsp

$(OUTPUT).nsp    :    $(OUTPUT).nso $(OUTPUT).npdm

$(OUTPUT).nso    :    $(OUTPUT).elf

endif

$(OUTPUT).elf    :    $(OFILES)

$(OFILES_SRC)    : $(HFILES_BIN)

#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o    %_bin.h :    %.bin
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @$(bin2o)

-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

its based on the Sdl2-simple example from devkitpro.


and yes i installed the SDL2 Libary with MSYS2
Code: 
dkp-libs switch-bulletphysics 2.88-2 [Installiert]
dkp-libs switch-bzip2 1.0.6-2 [Installiert]
dkp-libs switch-curl 7.59.0-1 [Installiert]
dkp-libs switch-examples 20190102-1 [Installiert]
dkp-libs switch-ffmpeg 4.0.1-2 [Installiert]
dkp-libs switch-flac 1.3.2-1 [Installiert]
dkp-libs switch-freetype 2.9-3 [Installiert]
dkp-libs switch-giflib 5.1.4-1 [Installiert]
dkp-libs switch-glad 0.1.27-1 [Installiert]
dkp-libs switch-glm 0.9.9.1-1 [Installiert]
dkp-libs switch-jansson 2.11-1 [Installiert]
dkp-libs switch-libass 0.14.0-1 [Installiert]
dkp-libs switch-libconfig 1.7.2-1 [Installiert]
dkp-libs switch-libdrm_nouveau 1.0.0-1 [Installiert]
dkp-libs switch-libexpat 2.2.5-1 [Installiert]
dkp-libs switch-libfribidi 1.0.4-1 [Installiert]
dkp-libs switch-libjpeg-turbo 1.5.3-1 [Installiert]
dkp-libs switch-libjson-c 0.13.1-1 [Installiert]
dkp-libs switch-libmad 0.15.1b-1 [Installiert]
dkp-libs switch-libmikmod 3.3.11.1-2 [Installiert]
dkp-libs switch-libmodplug 0.8.8.5-1 [Installiert]
dkp-libs switch-libogg 1.3.3-1 [Installiert]
dkp-libs switch-libopus 1.2.1-1 [Installiert]
dkp-libs switch-libpng 1.6.34-3 [Installiert]
dkp-libs switch-libsamplerate 0.1.9-1 [Installiert]
dkp-libs switch-libtheora 1.1.1-1 [Installiert]
dkp-libs switch-libvorbis 1.3.5-1 [Installiert]
dkp-libs switch-libvorbisidec 1.2.1-1 [Installiert]
dkp-libs switch-libxml2 2.9.8-1 [Installiert]
dkp-libs switch-mesa 18.3-2 [Installiert]
dkp-libs switch-mpg123 1.25.10-2 [Installiert]
dkp-libs switch-opusfile 0.10-3 [Installiert]
dkp-libs switch-pkg-config 0.28-2 [Installiert]
dkp-libs switch-sdl2 2.0.8-17 [Installiert]
dkp-libs switch-sdl2_gfx 1.0.4-1 [Installiert]
dkp-libs switch-sdl2_image 2.0.3-3 [Installiert]
dkp-libs switch-sdl2_mixer 2.0.2-2 [Installiert]
dkp-libs switch-sdl2_net 2.0.1-1 [Installiert]
dkp-libs switch-sdl2_ttf 2.0.14-2 [Installiert]
dkp-libs switch-zlib 1.2.11-2 [Installiert]

sorry for many code spoilers.
guess its something with the makefile and im not very good when people talk about makefiles. hope some can help me.
BTW the main file name's main.cpp
the makefile name's Makefile
and the romfs is correct

after writing this all i looked in a example and there stand i need to init the romfs first with romfsInit().
Code: 
#include <stdio.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <string.h>
#include <errno.h>

#define WIDTH 800
#define HEIGHT 600

int main (int argc, char *argv[]) {
    romfsInit();
#define IMG_PATH "romfs:/image.png"
    // variable declarations
    SDL_Window *win = NULL;
    SDL_Renderer *renderer = NULL;
    SDL_Texture *img = NULL;
    int w, h; // texture width & height
    
    // Initialize SDL.
    if (SDL_Init(SDL_INIT_VIDEO) < 0)
            return 1;
    
    // create the window and renderer
    // note that the renderer is accelerated
    win = SDL_CreateWindow("Image Loading", 100, 100, WIDTH, HEIGHT, 0);
    renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
    
    // load our image
    img = IMG_LoadTexture(renderer, IMG_PATH);
    SDL_QueryTexture(img, NULL, NULL, &w, &h); // get the width and height of the texture
    // put the location where we want the texture to be drawn into a rectangle
    // I'm also scaling the texture 2x simply by setting the width and height
    SDL_Rect texr; texr.x = WIDTH/2; texr.y = HEIGHT/2; texr.w = w*2; texr.h = h*2;
    
    // main loop
    while (1) {
        
        // event handling
        SDL_Event e;
        if ( SDL_PollEvent(&e) ) {
            if (e.type == SDL_QUIT)
                break;
            else if (e.type == SDL_KEYUP && e.key.keysym.sym == SDLK_ESCAPE)
                break;
        }
        
        // clear the screen
        SDL_RenderClear(renderer);
        // copy the texture to the rendering context
        SDL_RenderCopy(renderer, img, NULL, &texr);
        // flip the backbuffer
        // this means that everything that we prepared behind the screens is actually shown
        SDL_RenderPresent(renderer);
        
    }
    
    SDL_DestroyTexture(img);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(win);
    
    return 0;
}
after rewriting everything again.
i needed got an unknown reference error with romfsinit.
so i entered lnx after all libs
so thats my new Makefile.
Code: 
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif

TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/libnx/switch_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
#
# NO_ICON: if set to anything, do not use icon.
# NO_NACP: if set to anything, no .nacp file is generated.
# APP_TITLE is the name of the app stored in the .nacp file (Optional)
# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
# APP_VERSION is the version of the app stored in the .nacp file (Optional)
# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
# ICON is the filename of the icon (.jpg), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.jpg
#     - icon.jpg
#     - <libnx folder>/default_icon.jpg
#
# CONFIG_JSON is the filename of the NPDM config file (.json), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.json
#     - config.json
#   If a JSON file is provided or autodetected, an ExeFS PFS0 (.nsp) is built instead
#   of a homebrew executable (.nro). This is intended to be used for sysmodules.
#   NACP building is skipped as well.
#---------------------------------------------------------------------------------
TARGET        :=    $(notdir $(CURDIR))
BUILD        :=    build
SOURCES        :=    source
DATA        :=    data
INCLUDES    :=    include
ROMFS        :=    romfs

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH    :=    -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE

CFLAGS    :=    -g -Wall -O2 -ffunction-sections \
            $(ARCH) $(DEFINES)

CFLAGS    +=    -D__SWITCH__ $(INCLUDE) `sdl2-config --cflags`

CXXFLAGS    := $(CFLAGS) -fno-rtti -fno-exceptions

ASFLAGS    :=    -g $(ARCH)
LDFLAGS    =    -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

LIBS    :=    -lSDL2_image `sdl2-config --libs` -lnx

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS    := $(PORTLIBS) $(LIBNX)


#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT    :=    $(CURDIR)/$(TARGET)
export TOPDIR    :=    $(CURDIR)

export VPATH    :=    $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
            $(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR    :=    $(CURDIR)/$(BUILD)

CFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES    :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES    :=    $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
    export LD    :=    $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
    export LD    :=    $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES_BIN    :=    $(addsuffix .o,$(BINFILES))
export OFILES_SRC    :=    $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES     :=    $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN    :=    $(addsuffix .h,$(subst .,_,$(BINFILES)))

export INCLUDE    :=    $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
            $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
            -I$(CURDIR)/$(BUILD)

export LIBPATHS    :=    $(foreach dir,$(LIBDIRS),-L$(dir)/lib)

ifeq ($(strip $(CONFIG_JSON)),)
    jsons := $(wildcard *.json)
    ifneq (,$(findstring $(TARGET).json,$(jsons)))
        export APP_JSON := $(TOPDIR)/$(TARGET).json
    else
        ifneq (,$(findstring config.json,$(jsons)))
            export APP_JSON := $(TOPDIR)/config.json
        endif
    endif
else
    export APP_JSON := $(TOPDIR)/$(CONFIG_JSON)
endif

ifeq ($(strip $(ICON)),)
    icons := $(wildcard *.jpg)
    ifneq (,$(findstring $(TARGET).jpg,$(icons)))
        export APP_ICON := $(TOPDIR)/$(TARGET).jpg
    else
        ifneq (,$(findstring icon.jpg,$(icons)))
            export APP_ICON := $(TOPDIR)/icon.jpg
        endif
    endif
else
    export APP_ICON := $(TOPDIR)/$(ICON)
endif

ifeq ($(strip $(NO_ICON)),)
    export NROFLAGS += --icon=$(APP_ICON)
endif

ifeq ($(strip $(NO_NACP)),)
    export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
endif

ifneq ($(APP_TITLEID),)
    export NACPFLAGS += --titleid=$(APP_TITLEID)
endif

ifneq ($(ROMFS),)
    export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
endif

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)

$(BUILD):
    @[ -d $@ ] || mkdir -p $@
    @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
    @echo clean ...
ifeq ($(strip $(APP_JSON)),)
    @rm -fr $(BUILD) $(TARGET).nro $(TARGET).nacp $(TARGET).elf
else
    @rm -fr $(BUILD) $(TARGET).nsp $(TARGET).nso $(TARGET).npdm $(TARGET).elf
endif


#---------------------------------------------------------------------------------
else
.PHONY:    all

DEPENDS    :=    $(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ifeq ($(strip $(APP_JSON)),)

all    :    $(OUTPUT).nro

ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro    :    $(OUTPUT).elf $(OUTPUT).nacp
else
$(OUTPUT).nro    :    $(OUTPUT).elf
endif

else

all    :    $(OUTPUT).nsp

$(OUTPUT).nsp    :    $(OUTPUT).nso $(OUTPUT).npdm

$(OUTPUT).nso    :    $(OUTPUT).elf

endif

$(OUTPUT).elf    :    $(OFILES)

$(OFILES_SRC)    : $(HFILES_BIN)

#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o    %_bin.h :    %.bin
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @$(bin2o)

-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

other things are all the still the same like pictures.

so that was my long thread and i asking for an fix now how to render a image.
btw yes the file names cpp but i really dont want to make CPP programs im C programmer.
but when i rename the Program back to .c then i get these errors.
https://pastebin.com/raw/NeVjuRct warning its very long

so after obtaining the longest thread on earth medal i hope now for getting help :)
 
D

Deleted User

Guest
OP
fgsfds said:
You need to link to libjpeg-turbo and libpng.
Add -ljpeg -lpng after all your libs.
Click to expand...
:C
Code: 
main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE  -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
linking image.elf
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: cannot find -libjpeg-turbo
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: cannot find -libpng
collect2.exe: error: ld returned 1 exit status
make[1]: *** [/opt/devkitpro/libnx/switch_rules:80: /home/Anwender/Desktop/FuseeGelee/image/image.elf] Error 1
make: *** [Makefile:165: build] Error 2

C:\Users\Anwender\Desktop\FuseeGelee\image>make clean all
clean ...
main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE  -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
linking image.elf
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(png.o): in function `png_reset_crc':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:130: undefined reference to `crc32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(png.o): in function `png_calculate_crc':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:173: undefined reference to `crc32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:173: undefined reference to `crc32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(png.o): in function `png_reset_zstream':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:986: undefined reference to `inflateReset'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(png.o): in function `png_compare_ICC_profile_with_sRGB':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:2368: undefined reference to `adler32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:2369: undefined reference to `adler32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:2381: undefined reference to `crc32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/png.c:2382: undefined reference to `crc32'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngread.o): in function `png_read_destroy':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngread.c:979: undefined reference to `inflateEnd'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngrutil.o): in function `png_inflate_claim':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngrutil.c:407: undefined reference to `inflateReset2'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngrutil.c:416: undefined reference to `inflateInit2_'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngrutil.c:429: undefined reference to `inflateValidate'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngrutil.o): in function `png_zlib_inflate':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngrutil.c:467: undefined reference to `inflate'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngrutil.o): in function `png_decompress_chunk':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngrutil.c:662: undefined reference to `inflateReset'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngwrite.o): in function `png_write_destroy':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwrite.c:945: undefined reference to `deflateEnd'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngwutil.o): in function `png_deflate_claim':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwutil.c:418: undefined reference to `deflateInit2_'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwutil.c:396: undefined reference to `deflateEnd'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwutil.c:414: undefined reference to `deflateReset'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngwutil.o): in function `png_text_compress':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwutil.c:581: undefined reference to `deflate'
c:/devkitpro/devkita64/bin/../lib/gcc/aarch64-none-elf/8.2.0/../../../../aarch64-none-elf/bin/ld.exe: C:/devkitPro/portlibs/switch/lib\libpng.a(pngwutil.o): in function `png_compress_IDAT':
C:\Users\davem\projects\devkitpro\pacman-packages\switch\libpng\src\libpng-1.6.34/pngwutil.c:982: undefined reference to `deflate'
collect2.exe: error: ld returned 1 exit status
make[1]: *** [/opt/devkitpro/libnx/switch_rules:80: /home/Anwender/Desktop/FuseeGelee/image/image.elf] Error 1
make: *** [Makefile:165: build] Error 2
 
D

Deleted User

Guest
OP
XorTroll said:
Are you actually specifying romfs in Makefile?
Click to expand...
yep
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := source
DATA := data
INCLUDES := include
ROMFS := romfs

--------------------- MERGED ---------------------------

XorTroll said:
Are you actually specifying romfs in Makefile?
Click to expand...
main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp: In function 'int main(int, char**)':
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp:11:2: error: 'romfsInit' was not declared in this scope
romfsInit();
^~~~~~~~~
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp:11:2: note: suggested alternative: 'mbsinit'
romfsInit();
^~~~~~~~~
mbsinit
make[1]: *** [/opt/devkitpro/devkitA64/base_rules:14: main.o] Error 1
make: *** [Makefile:165: build] Error 2
thats the error with romfsInit

--------------------- MERGED ---------------------------

Sumandora said:
yep
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := source
DATA := data
INCLUDES := include
ROMFS := romfs

--------------------- MERGED ---------------------------


main.cpp
aarch64-none-elf-g++ -MMD -MP -MF /home/Anwender/Desktop/FuseeGelee/image/build/main.d -g -Wall -O2 -ffunction-sections -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE -D__SWITCH__ -I/home/Anwender/Desktop/FuseeGelee/image/include -I/opt/devkitpro/portlibs/switch/include -I/opt/devkitpro/libnx/include -I/home/Anwender/Desktop/FuseeGelee/image/build `sdl2-config --cflags` -fno-rtti -fno-exceptions -c /home/Anwender/Desktop/FuseeGelee/image/source/main.cpp -o main.o
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp: In function 'int main(int, char**)':
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp:11:2: error: 'romfsInit' was not declared in this scope
romfsInit();
^~~~~~~~~
C:/Users/Anwender/Desktop/FuseeGelee/image/source/main.cpp:11:2: note: suggested alternative: 'mbsinit'
romfsInit();
^~~~~~~~~
mbsinit
make[1]: *** [/opt/devkitpro/devkitA64/base_rules:14: main.o] Error 1
make: *** [Makefile:165: build] Error 2
thats the error with romfsInit
Click to expand...

notice to myself
switch.h must be linked.
Fixed my problem :)
 

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