How should I compile different libs for different instruction sets ?

[dreamcmi]

I'm compiling the riscv toolchain using the build script in the repository, and in the generated binaries, I found that there are only some bases a library and ldscripts folder in the xpack-riscv-none-elf-gcc-12.2.0-1\riscv-none-elf\lib directory , but the same directory under github release will have subfolders with different instruction sets, such as rv32e, rv32i, rv32ima. How should I compile to output these files?
My build command is bash scripts/helper/build.sh --develop --win64 and the branch used xpack-develop.

[ilg-ul]

The subfolders with different instruction sets are the result of the multilib configuration. For one reason or another, your build seems to run without multilibs. Anyway, if you enable --develop, this restricts the number of multilibs, to save some compile time, which may go up to several hours.

BTW, the xpack-develop branch may not build properly occasionally.

[dreamcmi]

Thanks, I tried switching the branch to xpack and canceled --develop, then it compiled successfully after about 4h of compilation. But one more question, can I specify to compile only certain libs?

[ilg-ul]

can I specify to compile only certain libs?

Yes, edit the list of multilibs.

[dreamcmi]

Thanks, I found the configuration of multilab in common-versions-source.sh, but the comment on line 81 is in doubt.

# DO NOT add the combination that is already given as the default!
 # rv32imac-ilp32-- \ 

Does gcc12 not support rv32imac? Or does rv32imac do not need to compile lib independently?

[ilg-ul]

The rv32imac is passed as the default architecture, you don't have to pass it again.

[dreamcmi]

Thanks a lot.