[cfe-dev] Cross compiling with clang

[Guilherme]

Hello again,

as it seems I made a mistake in the previous post.

I stated i was looking vor the correct ARM version but that was wrong.

The e200z4 is a PowerPC architecture, so i'm looking for the correct sub
arch.

This is the error I currently get.

D:\Playground\xcompile-arm>c:\llvm\bin\clang.exe -target
powerpc-unknown-none-elf main.c
Assembler messages:
Fatal error: invalid listing option `3'
clang.exe: error: assembler command failed with exit code 1 (use -v to see
invocation)

Sorry for the confusion i might have caused.

On Tue, May 12, 2015 at 10:55 AM, Guilherme <guibufolo+llvm at gmail.com>
wrote:

> Hello,
>
> I would like to cross compile C code i have to ARM. My host system is a
> windows machine.
>
> I have found, the rather short,
> http://clang.llvm.org/docs/CrossCompilation.html guide and it does
> concisely explain what you need to do when you have a version of clang that
> is able to cross compile.
>
> But what I could not find is a list, link or reference to where get a
> version of clang for windows which is able to cross-compile to ARM.
>
> Using the version I got from the downloads site i get:
> D:\Playground\xcompile-arm>c:\llvm\bin\clang --version
> clang version 3.5.0 (217039)
> Target: i686-pc-windows-gnu
> Thread model: posix
>
> D:\Playground\xcompile-arm>c:\llvm\bin\clang.exe -target
> armv7-unknown-none-elf main.c
> clang.exe: warning: unknown platform, assuming -mfloat-abi=soft
> clang.exe: warning: unknown platform, assuming -mfloat-abi=soft
> c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe:
> C:\Users\uidw8099\AppData\Local\Temp\main-4763a2.o: Relocations in generic
> ELF (EM: 40)
> C:\Users\uidw8099\AppData\Local\Temp\main-4763a2.o: error adding symbols:
> File in wrong format
> collect2.exe: error: ld returned 1 exit status
> clang.exe: error: linker (via gcc) command failed with exit code 1 (use -v
> to see invocation)
>
> Second: I'm not able to find which sub-arch a certain processor belongs
> to: For instance i have a e200z4, which sub-arch does it belong to? Can i
> read that from the Reference manual?
>
> For the sys part of the triple, if i'm doing bare metal development,
> should i use None? What exactly does the sys part change when compiling
> code?
>
> Thank you for your help
>
>
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