GNU Compiler Collection. gcc, formerly known as the GNU C
Compiler, compiles multiple languages (C, C++, Objective-C, Ada,
Fortran, and Java) to machine code. Here we document its use to
compile C, C++, or Objective-C code. gcc compiles one or more program source
files; for example, C source files (
file.c), assembler source files
file.s), or preprocessed C
source files (
file.i). If the
file suffix is not recognizable, assume that the file is an object
file or library. gcc normally invokes the C preprocessor, compiles the
preprocessed code to assembly language code, assembles it, and
then links it with the linker. This process can be stopped at one
of these stages using the
-E option. The steps may
also differ depending on the language being compiled. By default,
output is placed in
some cases, gcc generates an
object file having a
and a corresponding root name.
Preprocessor and linker options given on the gcc command line are passed on to these tools when they are run. These options are briefly described here, but some are more fully described under the entry for ld. The options that follow are divided into general, preprocessor and linker options. We have included only the most generally useful options. gcc accepts many, many more options not covered here.
gcc is the GNU form of cc; on most Linux systems, the command cc invokes gcc. The command g++ invokes gcc with the appropriate options for interpreting C++; ...