Oops, I think I gave an incomplete answer. I did not read the original problem carefully. If the 'push' instruction gives an error message, I suspect that the program has some assembly language code in it. Otherwise, the compiler would generate the correct sizes (32-bit or 64-bit). If there is some assembly language, and it is written for 32-bit, it would have to be changed to 64-bit. I am guessing that you do not want to do that. So, I will assume that you want to create a 32-bit program. The '-m32' option for gcc will tell the compiler to generate 32-bit code. There are a couple of possibilities to cause the assembler to do 32-bit. 1. Look in your make file for an 'as' command. That is how the assembler it invoked. The option to cause 'as' to do 32-bit is '--32'. (Yes, there are two dashes here.) 2. If the assembly language is embedded in C/C++ code, or it's in a '.s' file, gcc will pass it on to the assembler. You then have to tell gcc to pass the '--32' option on to the assembler. You do that with the gcc option 'Wa,--32'. The 'Wa' tells gcc that you have an option for the assembler. You need to follow that with a comma and then the option, with no spaces. So I think you need to both (a) give gcc the -m32 option, and (b) give the assembler the '--32' option. Warning: This still may not work. Your installation also needs to have the proper 32-bit libraries installed. But if they are not installed, the errors should come during the linking phase. Bob On Wed, 2009-04-08 at 18:09 +0200, Riccardo FABBRIS wrote: > Hi Bob, > First of all thanks for replying, > Yes, I'm using a x86-64 processor. > As said before I'm pretty ignorant: if I had to write > make > how would my command become? Do I have to change the makefile? > I tried to change > CC := gcc > with > CC:= gcc -m32 > but it still not work. > Thanks and sorry my ignorance, > Riccardo > > On Wed, 08 Apr 2009 08:42:20 -0700, Bob Plantz said: > > > > Assuming that you are using an x86-64 processor, try the -m32 option for > > gcc. > > > > Bob > >
