g++ and GCC and cc differences

1.GCC

GCC represents "GNU Compiler Collection", and GCC is a collection of compilers for the release of several major programming languages that currently include C,c++,objective-c, Java, Fortran, Ada, and go.

GCC has three layers of meaning: (1) as shown above, (2) formerly representing "GNU C Compiler"; (3) GCC's language-independent part: The shared part of all compilers that support languages.

The GCC language-independent section includes most of the optimizer and the backend that generates machine code for different processors.

The part of the compiler associated with a particular language is called the front-end.

In addition to the C language most languages compiler has their own name, C + + compiler is g++, Ada compiler is gnat, etc. when compiling these languages, you can use their compiler names or use GCC.

2.cc

CC is originally the C Compiler of Unix system, under Linux cc is the GCC symbol connection. You can view the following commands:

Ls-l/usr/bin/cc

The result:/usr/bin/cc->/etc/alternatives/cc

Ls-l/etc/alternatives/cc

The result:/etc/alternatives/cc->/USR/BIN/GCC

3.g++ and GCC

There are some differences between the two: the suffix is. C's file gcc as a C program, g++ as a C + + program. Suffixes of C + + are both as C + + programs. For CPP programs, either GCC or g++ compile phase are the same, are compiled with GCC, but in the link phase gcc can not automatically and C + + program use of the library connection, if used, the shape is as follows: GCC helloworld.cpp-lstdc++-O HelloWorld. So we usually use g++ to connect (g++ will automatically connect C + + Common library), so in order to use convenient for CPP program simply compile link all use g++.