如何关掉LLVM的综合汇编？ [英] How to switch off LLVM's integrated assembler?

问题描述

我有涉及手写装配AT＆放一个项目; T语法，做工精细与海湾合作委员会，而不是由我做再加上我不是很了解装配其试图与Clang的建立它的时候表现出奇怪的问题<。 / p>

LLVM文档提到，大多数X86指标使用LLVM的集成组装，而不是制度汇编;作为一个可能的解决方法，我想明确地使用了后者。我（当然，谷歌）都没有成功找到关于如何做到这一点的信息。

问：有没有办法询问或者说强制锵/ LLVM使用该系统，而不是汇编综合之一

（我知道我随时可以去阅读源™，但我想知道是否有一个成文规定。）

解决方案

原来我彻底无缘本手册页：

  

- 集成 - 为 -no集成，如

  
  

用于启用和禁用，分别使用集成汇编的。无论是集成组装是在默认情况下为目标而定。

要在编译器调用禁用：

 铛-no集成，为-c foo.c的
 

或者

 出口CC =铛 - 没有集成，为
使
 

I have a project involving hand-written assembly—AT&T syntax, works fine with GCC, but not done by me plus I know very little about assembly—which exhibits a weird problem when trying to build it with Clang.

LLVM documentation mentions that "most X86 targets" use LLVM's integrated assembler as opposed to the system assembler; as a possible workaround I would like to explicitly use the latter. I (well, Google) haven't been successful in finding information on how to do this.

Question: Is there a way to ask or rather force Clang / LLVM to use the system assembler instead of the integrated one?

(I know I could always go and Read The Source™, but I want to know whether there's a documented approach.)

解决方案

Turns out I completely missed this in the man page:

-integrated-as -no-integrated-as

Used to enable and disable, respectively, the use of the integrated assembler. Whether the integrated assembler is on by default is target dependent.

To disable it at compiler invocation:

clang -no-integrated-as -c foo.c

Or:

export CC="clang -no-integrated-as"
make

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