建立i386的crti.o [英] Building crti.o for i386

问题描述

我正在尝试构建一个交叉编译器，x86_64是主机，i386是目标。我得到（所有常见的）crti.o：没有这样的文件错误。而不是从发行版中抓取已经构建的crti.o和crtn.o ...我怎么可以从glibc（或者可能是gcc）源代码中显式构建这些文件？

FYI，我很清楚x86_64编译器的-m32选项。我宁愿只有一个32位编译器环境。另外，我不想使用任何gazillion已经构建的i386编译器的原因是因为我计划根据我的测试需要来混合和匹配glibc / binutils / gcc版本。

感谢，
Chenz

解决方案

您确定使用正确配置交叉编译吗？它应该是

 CBUILD = CHOST = x86_64-pc-linux-gnu 
 CTARGET = i386-pc-linux-gnu  x86_64 上运行构建时，要使编译器在上运行， x86_64 ，它为 i386 生成代码。
 
 
 
如果使用 CHOST = i386-pc-linux-gnu ，您将尝试生成32位二进制文​​件，这需要与32位 libc 。这很好，如果你已经有一个32位的 libc ，但听起来你没有。
 
 
 
 ie 
 $ tar xvjf gcc  -  *。tar.bz2 
 $ cd gcc  -  * / 
 $ mkdir build 
 $ cd build 
 $ ../configure --build = x86_64-pc-linux-gnu --host = x86_64-pc-linux-gnu --target = i386-pc-linux-gnu 
 
I am trying to build a cross-compiler with x86_64 being the host and i386 being the target. I'm getting the (all to common) crti.o: No such file error. Instead of grabbing an already built crti.o and crtn.o from a distro... how might I go about building these files explicitly from glibc (or possibly gcc) sources?

FYI, I am well aware of the -m32 option for x86_64 compilers. I'd prefer to just have a 32bit-only compiler environment. Also, the reason I don't want to use any of the gazillion already build i386 compilers is because I plan on mixing and matching glibc/binutils/gcc versions depending on my testing needs.

Thanks,
Chenz
解决方案
Are you sure you're using configuring the cross-compile correctly?  It should be
CBUILD = CHOST = x86_64-pc-linux-gnu
CTARGET = i386-pc-linux-gnu
as you're running a build on an x86_64, for a compiler to run on an x86_64, which generates code for an i386.

If you used CHOST = i386-pc-linux-gnu, you'll be trying to generate 32-bit binaries, which will need to link with a 32-bit libc.  Which is fine, if you already have a 32-bit libc, but it sounds like you don't.

i.e.
$ tar xvjf gcc-*.tar.bz2
$ cd gcc-*/
$ mkdir build
$ cd build
$ ../configure --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=i386-pc-linux-gnu


                        
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