文章链接：http://embdev.net/topic/129737
我是从这个链接中看到的。觉得有点意思。因为自己用交叉编译器编译的时候。会出现arm-elf,arm-none-eabi,arm-eabi这些选择，倒底它们有什么区别呢？

what is difference between arm-elf and arm-eabi?

Re: what is difference between arm-elf and arm-eabi?

Dan Miller wrote:
> I've been trying, for a couple of days, to build the project which was
> associated with the Embedded.com articles "Building Bare-Metal ARM
> Systems with GNU".  I've been hoping that this will clarify alot of the
> confusion that I've experienced in trying to convert an existing project
> from IAR to gnuarm.
As far as I know the code from the embedded.com tutorial has been tested
with a Codesourcery G++ package (the lite version is free, Codesourcery
gets paid by ARM to improve the GNU tools AFAIK). So maybe this is the
package that should be used to avoid further confusion. Once you have
some basic knowledge of the tools you will see that it is not that
difficult to adapt the code for other GNU-precompiled-packages or
to/from other compilers.
> As it turns out, after three weeks of research,
Three weeks? - Uff.
> I have at least four
> different versions of GNUARM on my system:
> 1. gnuarm (arm-elf)
> 2. winarm (arm-elf) (slightly earlier version than gnuarm)
> 3. Ride (arm-none-eabi)
> 4. Sarm (arm-eabi)
gnuarm (I expect this is a package from gnuarm.org) and "older" versions
of WinARM are very similar. Main differences: WinARM has been created
for "non-cygwin" hosts and uses a slightly different newlib
configuration.
EABI and "old" ABI are different "targets" for which the GNU toolchain
can be build. EABI has been created as a common binary interface so
object code and libraries created with one toolchain/compiler can linked
to a project created with another one. Search on www.arm.com for further
details.
> Ultimately, only ONE of these four packages could actually build the
> project - Ride's arm-none-eabi.
It is well possible that the "Ride binaries" are very similar or even a
copy of the Codesourcery package. So this might be the reason why the
Quantum example-code can be build with this tools without problems.
Until gcc 4.3.0 the Codesourcery package has been the only one which
offered Cortex-M3 support and AFAIK Ride supports STM32 too. Just
speculation, I have never used the Ride tools. I don't know "Sarm" so I
can not comment on it at all.
> All others would fail in different
> ways.
You did not write the error-messages created during the attempts with
the other packages so it's difficult to analyze the reason why they
failed.
If would be interesting to see the error-messages when you try to build
with DevkitARM R23 or WinARM test-version 20080831.
> What's interesting, though, is that the output of the project,
> using arm-none-eabi, is a .elf file!!!
The file-extension is not important. elf and axf are just the usual
extensions. Just look into the makefile. Why "!!!"? What did you expect?
> So... what is the difference between arm-elf, arm-none-eabi, and
> arm-eabi ???
arm-elf is usually the prefix for GNU toolchains created for the arm-elf
target, arm-none-eabi for the target arm-eabi. But this does not mean
much since one can set the prefix when building the toolchain. At least
eabi should be an indicator that the toolchain has been created for
target arm-eabi.
>Obviously, the "none" in arm-none-eabi does not mean
> no-elf ...
This might be wrong. As far as I know it means "no operating-system" on
the target (for "bare metal") compared to for example arm-linux-elf.
I do understand your confusion, so stay with the GNU package that works
for you to get started. Once you know a little bit about the usage of
the GNU tools you will see that the differences are small and porting
code between them is rather easy.
Porting code from IAR to GNU is a more difficult esp. if the EWARM
compiler-extension have been used.

Re: what is difference between arm-elf and arm-eabi?

>
>> Ultimately, only ONE of these four packages could actually build the
>> project - Ride's arm-none-eabi.
> It is well possible that the "Ride binaries" are very similar or even a
> copy of the Codesourcery package. So this might be the reason why the
> Quantum example-code can be build with this tools without problems.
> Until gcc 4.3.0 the Codesourcery package has been the only one which
> offered Cortex-M3 support and AFAIK Ride supports STM32 too. Just
> speculation, I have never used the Ride tools. I don't know "Sarm" so I
> can not comment on it at all.
>

I can tell you ride use the codesoucery toolchain as delivered.
sarm is the toolchain delivered with Anglia IDEaliST, it is based on
codesoucery but has a few tweaks with newlib.

Cheers
Spen

上面得出了一个结论，arm-elf是GNU的编译工具链。如果你要用arm-eabi的话，最好用newlib这个库。
但是我用newlib库太郁闷了，甚至没有ioctl的操作，所以还是用glibc吧。 文章链接：http://embdev.net/topic/129737我是从这个链接中看到的。觉得有点意思。因为自己用交叉编译器编译的时候。会出现arm-elf,arm-none-eabi,arm-eabi这些选择，倒底它们有什么区别呢？what is difference between arm-elf and arm-eabi? Re: what is difference between arm-elf and arm-eabi? Author: brew install coreutils qemu e2fsprogs nasm m4 autoconf libtool automake bash gcc @10 brew install --cask osxfuse brew install i686- elf - gcc brew tap Arm Mbed/homebrew-formulae brew install arm -none-e abi -gc 基于python实现的对红葡萄酒质量数据进行探索性分析 对红葡萄酒质量数据进行探索性分析 本数据集包含1599种红酒，11个关于酒的化学成分的变量。至少3名葡萄酒专家对每种酒 进行了评分，分数在0（非常差）到10（非常好）之间 我们使用 R 并应用探索性数据分析技术，从而研究一个变量与多个变量的关系并探索选定数据集的分布、异常值和反常现象。 不懂运行，下载完可以私聊问，可远程教学 该资源内项目源码是个人的毕设，代码都测试ok，都是运行成功后才上传资源，答辩评审平均分达到96分，放心下载使用！ 1、该资源内项目代码都经过测试运行成功，功能ok的情况下才上传的，请放心下载使用！ 2、本项目适合计算机相关专业(如计科、人工智能、通信工程、自动化、电子信息等)的在校学生、老师或者企业员工下载学习，也适合小白学习进阶，当然也可作为毕设项目、课程设计、作业、项目初期立项演示等。 3、如果基础还行，也可在此代码基础上进行修改，以实现其他功能，也可用于毕设、课设、作业等。 下载后请首先打开README.md文件（如有），仅供学习参考, 切勿用于商业用途。 -------------