为什么即使使用 -L 和 -I 命令，object 文件也没有与 allegro 库链接？

Question

I'm using vs code and trying to link with allegro. I've little knowledge about.json files so i avoid them. This is the sample code i'm trying to run:

#include <allegro5/allegro.h>
#include <allegro5/allegro_font.h>

int main(int argc, char **argv)
{
    al_init();
    al_init_font_addon();
    ALLEGRO_DISPLAY* display = al_create_display(800, 600);
    ALLEGRO_FONT* font = al_create_builtin_font();
    al_clear_to_color(al_map_rgb(0, 0, 0));
    al_draw_text(font, al_map_rgb(255, 255, 255), 400, 300, ALLEGRO_ALIGN_CENTER, "Welcome to Allegro!");
    al_flip_display();
    al_rest(5.0);
    al_destroy_font(font);
    al_destroy_display(display);
    return 0;
}

by using the cmd command:

g++ -o test.exe main.cpp -IE:\ImportantSoftwares\allegro\include -LE:\ImportantSoftwares\allegro\lib -lallegro_monolith

Im getting following error:

C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x3a): undefined reference to `al_install_system'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x3f): undefined reference to `al_init_font_addon'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x53): undefined reference to `al_create_display'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x5b): undefined reference to `al_create_builtin_font'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x81): undefined reference to `al_map_rgb'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0xa4): undefined reference to `al_clear_to_color'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0xc7): undefined reference to `al_map_rgb'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x113): undefined reference to `al_draw_text'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x118): undefined reference to `al_flip_display'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x126): undefined reference to `al_rest'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x131): undefined reference to `al_destroy_font'
C:\Users\SHAO~1\AppData\Local\Temp/cccXEAJj.o:main.cpp:(.text+0x13c): undefined reference to `al_destroy_display'
collect2: ld returned 1 exit status

I have also tried to link allegro with codeblocks step by step described in this video: https://youtu.be/xH8mpOfRGxE

But im getting same error

EDIT:

I've changed above command to:

g++ main.cpp -o test.exe -IE:/ImportantSoftwares/allegro/include -LE:/ImportantSoftwares/allegro/lib -lallegro_monolith-debug.dll -lallegro_monolith.dll

i've also tried removing.dll in above command like:

g++ main.cpp -o test.exe -IE:/ImportantSoftwares/allegro/include -LE:/ImportantSoftwares/allegro/lib -lallegro_monolith-debug -lallegro_monolith

but im getting same error

Answer 1

The problem is fixed. I found out that allegro libraries was not compatible with my linker. I've updated allegro libraries and it's working fine now.