You can use the /Fo option (Windows*) or -c and -o options (Linux* and macOS*) to specify an alternate name for an object file. In this example, the compiler generates an object file name myobj.obj (Windows) or myobj.o (Linux and macOS*).
For C/C++ projects:
// Linux and macOS* icpc -c -omyobj.o x.cpp
// Windows
icl /Fomyobj x.cpp