难道没有GCC g ++的工作？ [英] Does g++ work without gcc?

问题描述

请问G ++编译不GCC或G ++只是翻译//包括旧G ++版本。

当我试图从源代码，我看到文件安装G ++

  

gcc.c

  / *默认prefixes附加到命令的名字。 * /的#ifndef STANDARD_EXEC_ preFIX
＃定义STANDARD_EXEC_ preFIX在/ usr / local / lib目录/ gcc-
#ENDIF / *！定义STANDARD_EXEC_ preFIX * /
 

这是G ++ 1.4 // *

嗯，我知道C ++是带类的C我只是想知道，如果G ++可以编译C ++不GCC。

解决方案

随着近期的 GCC ， GCC （实际上 CC1 这是由运行gcc ）和 G ++ （实际上 cc1plus 其他GCC编译器，如） - 和等 gfortran 甚至 GDC ....-分享了很多（源）code一起组成：中间末端（其中，最优化发生）和后端。所不同的是仅将编译器（特定的唯一的层存在源语言），它是编译器的小于30％的前端层

^{您可以定制GCC编译器与插件或 MELT 。您的扩展将工作海合会内部重新presentations（GIMPLE-S）和编译C，C ++，Ada语言，Fortran语言等时会工作......记住的 GCC 的手段的 GNU编译器集合的今天}

其实， GCC 程序能够编译C ++源$ C ​​$ C（同样地 G ++ 可以编译C或Fortran的code）。然而，它们不连接的相同的库

通过 -v 标志的 GCC 或 G ++ 命令，了解他们正在运行的。

---

下面是两个（矿）[CC-BY-SA]图片-explaing GCC和放大器;熔融说明这一点。

的三个层次 - 前年底，中端，编译器的背端值：

与你的插件，或 MELT 元插件

^{与简化： CC1 或 cc1plus 正在生成汇编文件，然后由<翻译code>为按 GCC启动或 G ++}

和

的内部的另一个视图 CC1 或 cc1plus ，

这产生了一些汇编code

Does G++ compile without GCC or G++ is just translator // Including old g++ version.

when i was trying to install g++ from source i saw file

gcc.c

/* Default prefixes to attach to command names.  */

#ifndef STANDARD_EXEC_PREFIX
#define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-"
#endif /* !defined STANDARD_EXEC_PREFIX */

//from g++1.4*

Well i know that c++ is c with classes i just wanted to know if the g++ can compile c++ without gcc .

解决方案

With a recent GCC, gcc (actually cc1 which is run by gcc) and g++ (actually cc1plus) -and so on for other GCC compilers, e.g. gfortran or even gdc ....- share a lot of (source) code together: the middle-end (where most optimizations happen) and the back-end. The difference is only the front-end layer of the compiler (the only layer being source language specific) which is less than 30% of the compiler.

^{You could customize the GCC compiler with plugins or with MELT. Your extensions would work on GCC internal representations (Gimple-s) and would work when compiling C, C++, Ada, Fortran, etc... Remember that GCC means Gnu Compiler Collection today}

Actually the gcc program is able to compile C++ source code (and likewise g++ can compile C or Fortran code). However, they are not linking the same libraries.

Pass the -v flag to the gcc or g++ command to understand what they are running.

---

Here are two (mine) [CC-BY-SA] pictures -explaing GCC & MELT- illustrating this.

The three layers -front-end, middle-end, back-end- of the compiler:

with your plugin, or the MELT meta-plugin

^{with a simplification: cc1 or cc1plus are generating assembler files, which is then translated by as started by gcc or g++}

and

another view of the internals of cc1 or cc1plus,

which generates some assembler code

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