cpp-x86-64-linux-gnu - 4:10.2.1-1 main

The GNU C preprocessor is a macro processor that is used automatically
by the GNU C compiler to transform programs before actual compilation.
.
This package has been separated from gcc for the benefit of those who
require the preprocessor but not the cross-compiler for amd64 architecture.
.
This is a dependency package providing the default GNU C preprocessor
for the amd64 architecture.