On 2023-03-24 19:51, Chris Johns wrote:
On 25/3/2023 10:07 am, Jonathan Wakely wrote:
On Fri, 24 Mar 2023, 23:07 Jonathan Wakely, <jwakely....@gmail.com
<mailto:jwakely....@gmail.com>> wrote:
On Fri, 24 Mar 2023, 23:03 Chris Johns, <ch...@contemporary.net.au
<mailto:ch...@contemporary.net.au>> wrote:
Hi,
I am sorting out some issues building RTEMS on MacOS including the M
processors.
The building gcc-12.2.1 for the few architectures I tested fail with
sig
faults
in xgcc when building the runtime. I tried arm, aarch64 and sparc. As a
result I
wondered about bootstrapping gcc and using that to build the tools
rather than
clang from Xcode.
Is aarch64-apple-darwin supported?
No. Iain Sandoe has some personal branches with changes to support it, but
the changes are not in the official gcc repo yet. If you search the
gcc-h...@gcc.gnu.org <mailto:gcc-h...@gcc.gnu.org> list you'll find links
to
his code. I think Homebrew is his patches too.
*uses his patches too.
I tried Iain's repo and it fails in the same way.
I have been building the tools on MacOS for over a decade with just the Apple
base to make sure we have a clean platform without any issues. To do that I
avoid MacPorts and Homebrew. I am fine with our users making use of those
packages however knowing a build works with just the Apple support makes our
support simpler.
Chris
I am able to build gcc from Iain's repo gcc-darwin-arm64 on an M1 Mini,
running macos 11.3.1, using the following configuration. (Change your
language preferences accordingly.) I used make -j4.
CC=/opt/homebrew/bin/gcc-12 \
CXX=/opt/homebrew/bin/g++-12 \
../../src/gcc-darwin-arm64/configure \
--prefix=$HOME/gm2/arm64 \
--exec-prefix=$HOME/gm2/arm64 \
--enable-languages=c,c++,m2 \
--with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX11.3.sdk \
--with-mpc=/opt/homebrew \
--with-gmp=/opt/homebrew \
--with-mpfr=/opt/homebrew \
--disable-bootstrap \
--enable-threads=posix
However, you must first define HAVE_FCNTL_H to 1 in libiberty/config.h
(that is missed somehow by configure).
Sincerely,
N.
