[cfe-dev] Cross compiling with clang

Guilherme guibufolo+llvm at gmail.com
Tue May 12 01:55:14 PDT 2015


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:\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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20150512/e30b5330/attachment.html>

More information about the cfe-dev mailing list