g++ src/main.cpp -c -o main.o
this works
Ok, this compile to relocateable object, after this you need to link them.
Ammar
V01D
Hm
Ammar
There is main function or not?
V01D
What if you only link sfml-graphics (since it is all you need)
Ammar
What is the output then?
V01D
objdump -M intel -d main.o
Asdew
AT&T style > Intel style
Ammar
We don't really need to use -M intel, since we only assure the main symbol exists.
V01D
We don't really need to use -M intel, since we only assure the main symbol exists.
Yeah, I know.
I find it easier to read Intel though
V01D
I love intel syntax, it is more readable to me.
The only wtf thing about intel is the source and dest operands on mov
Ammar
AT&T:
leal -1(%rdi), %eax
Intel:
lea eax, [rdi-1]
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
Ammar
Asdew
I'd say it's Breakjaro at work.
V01D
That terminal is beautiful though
Asdew
A good terminal font is gohufont.
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
#include <SFML/Graphics.hpp>
int main()
{
sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear();
window.display();
}
return 0;
}
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
V01D
#include <SFML/Graphics.hpp>
int main()
{
sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear();
window.display();
}
return 0;
}
You should add the argc argv thing
V01D
SDL needs that too
Ammar
That's strange.
V01D
It is optional though.
Still worth a try.
Maybe SFML needs that.
SDL does too.
(I could use it (sdl) without, but who knows. Might break on some systems)
M.Khorram
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
Is it gcc problem or sfml or do I need to install any dependencies?
since it works on manjaro xfce
I have already remove gcc and reinstalled
V01D
Hermann
/get cbook
Ammar
#include <SFML/Graphics.hpp>
int main()
{
sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear();
window.display();
}
return 0;
}
Could you show the output of
gcc -E src/main.cpp -o /dev/stdout
Ammar
If it is long, please use pastebin or gist.
Ammar
Or this
gcc -E src/main.cpp -o tmp.cpp
Ammar
Then send the tmp.cpp here.
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
Ammar
Ammar
I don't really understand the problem here.
Ammar
#include <SFML/Graphics.hpp>
int main()
{
sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear();
window.display();
}
return 0;
}
But it is really like this right?
Ammar
Your compiler does not say so.
V01D
Check again
V01D
Idk what to do either.
Just change the distro if it works on others
V01D
Or do a full system upgrade, idk
V01D
Maybe someone did alias g++='echo "" > src/main.cpp && gcc -c'
🤪
V01D
There was a flag to make gcc act like a c++ compiler but I forgot what it was 😅
Vlad
There was a flag to make gcc act like a c++ compiler but I forgot what it was 😅
afaik you can just gcc main.cpp
Vlad
And it will compile fine
Ammar
Ammar
echo 'int main() { return 0; }' > x.c
g++ -E x.c -o /dev/stdout
Ammar
I just want to make sure that this is not a compiler bug.
V01D
afaik you can just gcc main.cpp
Yeah of course.
Just some things are better with a c++ compiler
Andrew
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
🙇♂️ sorry
Ammar
its the -E flag that prints all things
Yes, including the #include'd files and macros expansion.
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
it was my fault
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
it was empty
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
i had opened another file in text editor
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
i just wasted your time 🙇♂️
𝖜𝖎𝖑𝖑𝖘𝖎𝖗
Mohannad
مساؤؤؤ
Nils
How do I return the value of the rax register in C?
Mar!o
What do you mean?
Mar!o
If you return a value it will be returned in RAX if it's 64-bits else if 32 == EAX, 16 == AX etc...
Ammar
How do I return the value of the rax register in C?
Could you provide more details of your case?
V01D
How do I return the value of the rax register in C?
Bad idea.
C handles the memory itself so rax in assembly != rax in C
Mar!o
Yeah and it always depends on the calling convention...
V01D
Just write assembly files along with C and push rax to the stack. Then return and done