How to compile x64 code with Visual Studio in command line?

Question

I want to compile a simple hello-world-style program using the Windows command line.

cl file_name.c

is easy enough. Now I want to do the sa

Answer 1

Kyle is right. It is just a matter of setting the PATH environment variable properly. The regular x86 compiler lives in the vc\bin subdirectory. There are two 64-bit compilers, a 32-bit compiler that generates 64-bit code in vc\bin\x86_amd64 and a 64-bit compiler that generates 64-bit code in vc\bin\amd64.

The default Visual Studio setup always uses the 32-bit compiler to generate 64-bit code.

Note that the 64-bit compilers are not installed by default. You'll have to re-run setup.exe if you didn't use the custom install option. And re-run the SP1 installer.