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Compile problem with graphics.h - understanding problem

 
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HolgiB



Joined: 12 Jan 2007
Posts: 6
PostPosted: Fri Jan 12, 2007 6:55 am    Post subject: Compile problem with graphics.h - understanding problem Reply with quote
Hi,

this are my first steps in PSP development. I already coded some small programs in C, but this was 10 years ago. So I am a noob. Somebody already pointed me to my "text problem" to freetype. I also found "flib" and this seems to be an easy way to get the job done for me. The demo compile without any trouble. Unfortunately I have a problem compiling my own program together with it and I really dont know why. Analyzed the Makefile for an hour, tried a lot but I still get this:

Code:
psp-gcc -I/include -I. -I/usr/local/pspdev/psp/sdk/include -G0 -Wall -O2 -I/usr/local/pspdev/psp/include/SDL -Dmain=SDL_main  -L. -L/usr/local/pspdev/psp/sdk/lib   sdlext.o flib.o graphics.o framebuffer.o sdlsidplay.o -lpsppower -lpspgu -lpng -lz -lm -lfreetype -lsidplay  -lstdc++  -L/usr/local/pspdev/psp/lib -lSDLmain -lSDL -lm -L/usr/local/pspdev/psp/sdk/lib -lpspdebug -lpspgu -lpspctrl -lpspge -lpspdisplay -lpsphprm -lpspsdk -lpsprtc -lpspaudio -lc -lpspuser -lpsputility -lpspkernel  -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -o sdlsidplay.elf
sdlsidplay.o: In function `Intro()':
sdlsidplay.cpp:(.text+0x70): undefined reference to `initGraphics()'
sdlsidplay.cpp:(.text+0x7c): undefined reference to `load_font(char*)'
sdlsidplay.cpp:(.text+0x8c): undefined reference to `clearScreen(unsigned int)'
sdlsidplay.cpp:(.text+0x98): undefined reference to `set_font_color(unsigned int)'
sdlsidplay.cpp:(.text+0xa0): undefined reference to `set_font_size(int)'
sdlsidplay.cpp:(.text+0xb4): undefined reference to `text_to_screen(char*, int, int)'
sdlsidplay.cpp:(.text+0xc4): undefined reference to `flipScreen()'
sdlsidplay.o: In function `SDL_main':
sdlsidplay.cpp:(.text+0x85c): undefined reference to `unload_font()'
collect2: ld returned 1 exit status
make: *** [sdlsidplay.elf] Error 1


And this is my Makefile:
Code:

TARGET = sdlsidplay
OBJS =  sdlext.o flib.o graphics.o framebuffer.o sdlsidplay.o

INCDIR =  $(PSPDIR)/include
CFLAGS = -G0 -Wall -O2
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =
LDFLAGS =
LIBS= -lpsppower -lpspgu -lpng -lz -lm -lfreetype

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = sdlsidplay
PSP_EBOOT_ICON = sidplay.png

PSPBIN = $(PSPSDK)/../bin
CFLAGS += $(shell $(PSPBIN)/sdl-config --cflags)
LIBS +=  -lsidplay  -lstdc++  $(shell $(PSPBIN)/sdl-config --libs)

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

strip: all
   cp $(TARGET).elf sdlsid.elf
   psp-strip  sdlsid.elf


Hmm, is the order of OBJS important or not? Changed it but not success. Same error.

The includes in my main program (sdlsiplay.cpp):
Code:

#include <stdlib.h>
#include <stdio.h>
#include <SDL/SDL.h>
#include <sidplay/sidtune.h>
#include <sidplay/emucfg.h>
#include <pspdebug.h>
#include <pspctrl.h>
#include <string.h>
#include <dirent.h>
#include <pspdisplay.h>

#include "graphics.h"
#include "flib.h"
#include "sdlext.h"


And the code which are causing this problem. When I remove it, everything is fine. My program works, but I am just starting to build something like a user interface and need flib and all what I can get from graphics.h.

Code:

int
Intro()
{
   initGraphics();

   if(!load_font("times.ttf"))   // load "times new roman" font
   {
      printf ("Could not load font file.\n");
      return 1;
   }

   clearScreen(0);

   set_font_color(0xff00ffff);   // green
   set_font_size(24);      // 16 point
   text_to_screen("PSP-Sidplayer", 0, 0);

   sceDisplayWaitVblankStart();
   flipScreen();
   return(0);
}


I really dont have an idea. I think its an understanding problem because the flib demo compiles and works without any problems. In this program, I have to use also SDL. The audio routines of the original author are using SDL. This part works perfectly.

HELP :-)

--Holger
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Insert_witty_name



Joined: 10 May 2006
Posts: 376
PostPosted: Fri Jan 12, 2007 7:12 am    Post subject: Reply with quote
Wrap the graphics.h include in an extern C statement.

Code:
extern "C" {
#include "graphics.h"
}


You may have to do this for the flib/sdlext include also.
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HolgiB



Joined: 12 Jan 2007
Posts: 6
PostPosted: Fri Jan 12, 2007 4:49 pm    Post subject: Reply with quote
Thank you very much. That was the solution of my problem.

Didnt had a clue what could be the problem. Think this solution I neverever had found on my own :-) .

--Holger
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