Hi Claude!
On Friday, 15 July 2016 at 14:09:40 UTC, Claude wrote:
Hello,
I would like to cross-compile a D program from a x86 machine to
an ARM target.
[...]
So I'm a bit confused of what the current state of LDC+ARM is.
For example, is the run-time fully ported on ARM/Linux?
LDC is fully ported to Linux/ARM. The current release also
includes LDC pre-compiled for ARMv7 with hard floats (e.g.
matches recent Raspberry hardware). On such a platform you can
simply unpack the binary packages and LDC should run out of the
box.
What would be the steps to have an LDC cross-compiling to ARM?
That is a somewhat different story. First, you need to built LLVM
with support for ARM and then compile LDC against this version of
LLVM. You can run ldc2 -version to see if the ARM target is
supported. As Radu already mentioned, most of the required steps
are described in the wiki at
https://wiki.dlang.org/Build_LDC_for_Android. From a different
perspective there is an old news post about cross-compiling to
AArch64, too:
http://forum.dlang.org/post/fhwvxatxezkafnalw...@forum.dlang.org.
There is a reason why we do not distribute a binary version of
LDC with all LLVM targets enabled. LDC still uses the real format
of the host. This is different on ARM (80bit on Linux/x86 vs.
64bit on Linux/ARM). Do not expect that applications using real
type work correctly.
(The Windows version of LDC uses 64bit reals. The binary build
has the ARM target enabled.)
Regards,
Kai
