Homebrew Homebrew Development

Tjessx · Feb 4, 2016

I am doing these things, however, i don't have a libhi.h file that includes all other files, i include the different .h files manually.
for example when i need the class Circle then i do:
#include<libhi/circle.h>
where the libhi is a folder inside the include folder with circle.h in it.

The problem is that the .a file doesn't get read.

Coto · Feb 4, 2016

how to build a header:

//header.h

Code:

#ifdef __cplusplus
extern "C" {
#endif

extern int do_divide(int a,int b);

#ifdef __cplusplus
}
#endif

//header.c

Code:

#include "header.h"

int do_divide(int a,int b){

return (int)(a/b);
}

//someotherpartofprogram.c

Code:

#include "header.h"

void program(){
printf("16/2 = %d",do_divide(16,2));
}

So when you compile header.c an object (.o) will be generated. The linker expects a symbol declaration that matches the function signature so it can be reachable. If not found and you are using it somewhere you will get "undefined reference to _whatever".

edit:
(GNU uses the -I followed by the dir of the current Includes folder (.h)", make sure you have those at compile(g++/cc) and link(ld) time.

also if you suspect the library is not being recognized try:

Code:

ar -x libhi.a

that will extract the generated objects.
-
and if you want to re-build the library from many objects (.o):

Code:

ar rvs libhi.a object1.o object2.o ...

But you will need ar tool : (devkitPro\devkitARM\arm-none-eabi\bin)

Also I am not sure the libs linked in devkitarm are recursively read each folder, so subfolder library linking may not work.

With these tips you should understand pretty well how to build your libraries. If you still don't understand then try reading again.

Tjessx · Feb 4, 2016

I do follow those guidelines, maybe it is my homebrew environment.
Would someone want to try this library, and see if he/she can build it?
(link removed)

Include guinow.h, and execute this function in the int main():
GP::Graphics::init();
If that compiles, then everything should work

EDIT: i do not use the extern tag in the header files, is that necessary?

WiiUBricker · Feb 6, 2016

I am trying to compile a sample template I have found here. I followed all the steps but it fails every time to compile:

Code:

make.c
arm-none-eabi-gcc -MMD -MP -MF /c/devkitPro/3DS/template/build/main.d -g -Wall -O2 -mword-relocations -fomit-frame-pointer -ffast-math -march=armv6k -mtune=mpcore -mfloat-abi=softfp -I/c/devkitPro/3DS/template/include -I/c/devkitPro/libctru/include -I/c/devkitPro/3DS/template/build -DARM11 -D_3DS -c /c/devkitPro/3DS/template/source/main.c -o main.o
c:/devkitPro/3DS/template/source/main.c: In function 'main':
c:/devkitPro/3DS/template/source/main.c:10:3: error: too many arguments to function 'hidInit'
   hidInit(NULL);    // input
   ^
In file included from c:/devkitPro/libctru/include/3ds.h:40:0,
                 from c:/devkitPro/3DS/template/source/main.c:3:
c:/devkitPro/libctru/include/3ds/services/hid.h:89:8: note: declared here
Result hidInit(void);
        ^
c:/devkitPro/3DS/template/source/main.c:11:3: error: too few arguments to function 'gfxInit'
   gfxInit();        // graphics
   ^
In file included from c:/devkitPro/libctru/include/3ds.h:20:0,
                 from c:/devkitPro/3DS/template/source/main.c:3:
c:/devkitPro/libctru/include/3ds/gfx.h:66:6: note: declared here
void gfxInit(GSPGPU_FramebufferFormats topFormat, GSPGPU_FramebufferFormats bottomFormat, bool vrambuffers);
      ^
c:/devkitPro/3DS/template/source/main.c:15:7: warning: variable 'kUp' set but not used [-Wunused-but-set-variable]
   u32 kUp;          // keys up
       ^
c:/devkitPro/3DS/template/source/main.c:14:7: warning: variable 'kHeld' set but not used [-Wunused-but-set-variable]
   u32 kHeld;        // keys pressed
       ^
make[1]: *** [main.o] Error 1
"make": *** [build] Error 2

> Process Exit Code: 2
> Time Taken: 00:00

Any help is greatly appreciated.

Spaqin · Feb 6, 2016

Remove arguments from hidInit and set up your gfxInit with proper arguments, or swap it for gfxInitDefault().

WiiUBricker · Feb 6, 2016

Spaqin said:
Remove arguments from hidInit and set up your gfxInit with proper arguments, or swap it for gfxInitDefault().

Can you just give me your edited main.c please?

Spaqin · Feb 6, 2016

WiiUBricker said:
Can you just give me your edited main.c please?

Sorry, I don't have it.
But the compiler gave you the lines you need to change, give it a try.

erman1337 · Feb 6, 2016

I still don't quite understand how to download something from sockets. Do I basically do this?:

Code:

while(socket buffer length > 0){
  receive from socket();
}

I know about the headers and stuff, I just need to know if this is what I need to do.

Rinnegatamante · Feb 6, 2016

MarioErmando said:
I still don't quite understand how to download something from sockets. Do I basically do this?:

Code:

while(socket buffer length > 0){ recieve from socket(); }

You should first receive the header and check for content-length then iterate until you receive the complete content.

erman1337 · Feb 6, 2016

Rinnegatamante said:
You should first receive the header and check for content-length then iterate until you receive the complete content.

Alright thanks

Kartik · Feb 6, 2016

Out of topic question: IS SAFE_MODE_FIRM region specific?

Rinnegatamante · Feb 7, 2016

Does someone knows how citro3D processes material values? I tried to use some of these materials values resulting in pretty strange effects: http://devernay.free.fr/cours/opengl/materials.html

erman1337 · Feb 7, 2016

Is this enough to retrieve data with http using sockets? I can't test it without a real device

Code:

function getDataFromHTTP(ip, port, method, path, host, step, success)
    client = Socket.connect(ip, port)

    Socket.send(client, method .. ' ' .. path .. " HTTP/1.1\r\n" ..
    "Host: " .. host .. "\r\n")

    buffer = Socket.receive(client, 32768)
    length = string.match(buffer, "Content-Length: %d+")

    while #buffer < length do
        buffer = buffer + Socket.receive(client, 32768)
        step(#buffer, length)
    end

    success(buffer)
end

I'll add HTTP status checks later

MasterFeizz · Feb 7, 2016

Rinnegatamante said:
Does someone knows how citro3D processes material values? I tried to use some of these materials values resulting in pretty strange effects: http://devernay.free.fr/cours/opengl/materials.html

Make sure you are passing the values in the right format (BGR): https://www.3dbrew.org/wiki/GPU/Internal_Registers#Fragment_lighting_registers

Rinnegatamante · Feb 7, 2016

MarioErmando said:

Is this enough to retrieve data with http using sockets? I can't test it without a real device

Code:

function getDataFromHTTP(ip, port, method, path, host, step, success)
    client = Socket.connect(ip, port)

    Socket.send(client, method .. ' ' .. path .. " HTTP/1.1\r\n" ..
    "Host: " .. host .. "\r\n")

    buffer = Socket.receive(client, 32768)
    length = string.match(buffer, "Content-Length: %d+")

    while #buffer < length do
        buffer = buffer + Socket.receive(client, 32768)
        step(#buffer, length)
    end

    success(buffer)
end

I'll add HTTP status checks later

Socket.receive gives you a string, not a table so # operator shouldn't be allowed.
Also, with the first receive you'll probably get also a part of your content so your while cycle probably will never end.

erman1337 · Feb 7, 2016

Rinnegatamante said:
Socket.receive gives you a string, not a table so # operator shouldn't be allowed.
Also, with the first receive you'll probably get also a part of your content so your while cycle probably will never end.

Ah I forgot Content-Length doesn't count the headers

The documentation says that using the # operator gives you the count of bytes: http://www.lua.org/manual/5.1/manual.html#2.5.5

Rinnegatamante · Feb 7, 2016

MarioErmando said:
Ah I forgot Content-Length doesn't count the headers
The documentation says that using the # operator gives you the count of bytes: http://www.lua.org/manual/5.1/manual.html#2.5.5

Never used it for a string (i always used string.len func) so don't know if it's the same.

Tjessx · Feb 7, 2016

MarioErmando said:
I can't test it without a real device

sockets work using Citra, you don't need a real device

erman1337 · Feb 7, 2016

Tjessx said:
sockets work using Citra, you don't need a real device

~~They don't work for me though~~
Just got the nightly build, but it crashes

Tjessx · Feb 7, 2016

MarioErmando said:
~~They don't work for me though~~
Just got the nightly build, but it crashes

make sure that the app doesn't quit directly after doing it's job.
If the apps quits, citra will crash

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