Re: triple definitions for cross-compiling runtime libraries

Hi,

On 4/7/26 5:32 AM, Xaver Gruber via Gcc-help wrote:

> what are in perspective of the compiler and according to GNU/GCC the
> triples(host, build or target) of:
> - my machine executing cross-compilation
> - the Linux distribution I cross-compiled for?

"target" is specific to compiler tools, it does not exist for any other 
project.

Cross-compiling any project uses the local machine as "build" and the 
machine the code should run on as "host".

Building the cross-compiler itself uses the architecture the compiler 
should emit code for as "target."

These can then be combined, i.e. if you cross-compile a cross-compiler, 
you need both "host" (what the compiler should be running on) and 
"target" (what the compiler should generate code for).

The standard libraries themselves need to be compiled with a 
cross-compiler, but if you specify a different "host" than your "build" 
system, you are building a compiler that doesn't run on your build 
machine. That's not a big problem though, we just build two cross 
compilers: one running on the build machine, to compile the standard 
libraries, and one that is installed.

    Simon