[bebbo]

Originally Posted by sparhawk

I was trying this example code fro the Data Becker Supergrafik book. On the disk there is also the binary which wokrs, but it was compiled with Lattice C. When I try to compile it on bebbos gcc, then the binary crashes.


I assume that I missing some compile or linker option. I have used this gcc for my other project as well, but this is usally not using the OS in most cases and it works.


Seems that only ".c" is allowed as attachment but not ".cpp"



Commandline is this:

amiga-g++   -I/opt/amiga/utils/include -I/opt/amiga/m68k-amigaos/ndk13-include -I/opt/amiga/m68k-amigaos/ndk-include  -D AMIGA_OS --save-temps -fverbose-asm -Wall -pedantic -mcrt=nix13 -fno-exceptions -fno-rtti -std=c++11 -O2 -mregparm -fno-rtti -O3 -DNDEBUG   -o main.o -c main.cpp
amiga-g++  -D AMIGA_OS --save-temps -fverbose-asm -Wall -pedantic -mcrt=nix13 -fno-exceptions -fno-rtti -std=c++11 -O2 -mregparm -fno-rtti -O3 -DNDEBUG  -Wl,--enable-auto-import main.cpp.o  -o ../bin/CustomScreen.exe -Wl,--out-implib,../bin/libCustomScreen.dll.a -Wl,--major-image-version,0,--minor-image-version,0  -L/opt/amiga/utils/lib -lAmigaUtils -lAmigaGCCUtils

duh - that's a complicated command line...


I'd fix includes

//#include <utils/dos/dos.h>

also remove duplicate includes... and use exit(0); instead of Exit(0); -- include <stdlib.h> for no warnings.
and then

m68k-amigaos-gcc -Os main.c -mcrt=nix13 -o sparhawk

and the program is working.


Ah - you want to use -mregparm too: many clib header do not supply the needed __stdargs, also main needs that!
So use the proto includes instead:

//#include <clib/dos_protos.h>
//#include <exec/types.h>
//#include <exec/memory.h>
//#include <intuition/intuition.h>
//#include <intuition/screens.h>

//#include <clib/exec_protos.h>
//#include <clib/graphics_protos.h>
//#include <clib/intuition_protos.h> 

#include <proto/exec.h>
#include <proto/intuition.h>
#include <proto/graphics.h>

#include <stdio.h>
#include <stdlib.h>

//#include <utils/dos/dos.h>

and use

m68k-amigaos-gcc -Os main.c -mcrt=nix13 -o sparhawk -mregparm

and it's running fine again - plus it's a tad smaller, not profiting from -mregparm since your program only provides functions without params^^


and be nice to yourself and use volatile (and don't forget __stdargs at main)

volatile char *LeftMouse = (char *)0xbfe001;

void Color(void);
void Color_Cycle(void);

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

there you go