32-bit

I am using Ubuntu 13.04 and installed mingw-w64 using apt-get install mingw-w64 . I can compile and link a working 64-bit version of my program with the following command: x86_64-w64-mingw32-g++ code.cpp -o app.exe Which generates a 64-bit app.exe file. What binary or command line flags do I use to generate a 32-bit version of app.exe? Alexander Shukaev That depends on which variant of toolchain you're currently using. Both DWARF and SEH variants (which come starting from GCC 4.8.0) are only single-target. You can see it yourself by inspecting the directory structure of their distributions, i

I have been trying to read up on 32-bit and 64-bit processors ( http://en.wikipedia.org/wiki/32-bit_processing ). My understanding is that a 32-bit processor (like x86) has registers 32-bits wide. I'm not sure what that means. So it has special "memory spaces" that can store integer values up to 2^32? I don't want to sound stupid, but I have no idea about processors. I'm assuming 64-bits is, in general, better than 32-bits. Although my computer now (one year old, Win 7, Intel Atom) has a 32-bit processor. All calculations take place in the registers. When you're adding (or subtracting, or

Just a simple question: Is there any way to run a program compiled under a 64 bit Windows environment (with mingw64) on a 32 bit machine? Any DLL or any compatibility layer which I can use? If you are talking about a 32-bit processor, then no. But if you are running a 32-bit OS on 64-bit hardware, then you can do it with VMWare. A 64-bit guest can run on a 32-bit host, if the hardware supports it. Bochs should do the trick, but you'd need another copy of Windows to run in the virtual machine. (Some editions of Windows include additional licenses for virtual machines, so you might be in luck.)

In my case I have different files lets assume that I have >4GB file with data. I want to read that file line by line and process each line. One of my restrictions is that soft has to be run on 32bit MS Windows or on 64bit with small amount of RAM (min 4GB). You can also assume that processing of these lines isn't bottleneck. In current solution I read that file by ifstream and copy to some string. Here is snippet how it looks like. std::ifstream file(filename_xml.c_str()); uintmax_t m_numLines = 0; std::string str; while (std::getline(file, str)) { m_numLines++; } And ok, that's working but to