Roman Bolshakov <r.bolshakov@xxxxxxxxx> wrote:
On Wed, Feb 17, 2021 at 10:35:59AM +0000, Iain Sandoe wrote:
Roman Bolshakov <r.bolshakov@xxxxxxxxx> wrote:
stage1 of GCC build (master branch as of yesterday) fails with the error:
*** Configuration aarch64-apple-darwin20.3.0 not supported
make[2]: *** [configure-stage1-gcc] Error 1
make[1]: *** [stage1-bubble] Error 2
make: *** [all] Error 2
Is it expected issue?
Yes, that’s expected (it is not a bug).
I had impression that GCC works on Apple Silicon
macs.
There is an experimental branch here :
https://github.com/iains/gcc-darwin-arm64
but it is not yet ready for inclusion in GCC master,
Thanks for the reference.
I'm trying to build from your master-wip-apple-si branch and it doesn't
build too:
The directory that should contain system headers does not exist:
/usr/include
(this is not specific to Arm64 - it applies to building for x86_64 on
modern macOS).
These days (on macOS) there are no headers installed in /usr/include even
when the developer tools are installed.
So, you have to configure a path to the SDK [which contains the headers and
the library stubs] (from, say, an installation of the command line tools -
or from Xcode).
Two approaches:
1) [this is what I tend to use]
Install the command line tools.
Now there will be an SDK at
/Library/Developer/CommandLineTools/SDKs/MacOS.sdk
so you can configure with…
/path/to/source/configure —prefix=….
—with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOS.sdk ….
2) You can ask where the SDK is for an installation with Xcode only.
/path/to/source/configure —prefix=…. —with-sysroot=`xcrun —show-sdk-path` ….
====
In general, it is best not to add configuration options unles you know
*why* you’re adding them - but for modern macOS, it is a good idea to avoid
the default install path /usr/local … most people install now into /opt/…..
You can find general information on building GCC here :
https://gcc.gnu.org/install/
=====
My configure lines look like this:
/src-local/gcc-master/configure
--prefix=/opt/iains/aarch64-apple-darwin20/gcc-11-0-0
--build=aarch64-apple-darwin20
--with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
--disable-libstdcxx-pch --enable-languages=all
and you can see some test results here:
https://github.com/iains/gcc-darwin-arm64/issues/30
HTH,
Iain
