libgcc9 failed to build

[btywoniuk (Bart)]

I'm trying to install fresh version of MacPorts on macOS Catalina. When I trying to install numpy it starts from libgcc9 that is a decency. Unfortunately compilation of libgcc fails. I have the same situation when installing directly libgcc9 or libgcc-devel

info:build In file included from /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/libgcc9/work/gcc-9.1.0/libgcc/config/darwin-crt-tm.c:29:
:info:build /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/mach-o/dyld.h:107:168: error: 'unavailable' undeclared here (not in a function)
:info:build   107 | extern void _tlv_bootstrap(void)                                             __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) __attribute__((availability(driverkit,unavailable))) ;
:info:build       |                                                                                                                                                                        ^~~~~~~~~~~
:info:build make[3]: *** [crttms.o] Error 1

[btywoniuk (Bart)]

main log

[kencu (Ken)]

<​https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90835>

For right now, perhaps building against the 10.14 SDK might work...

[mf2k (Frank Schima)]

The Milestone field is for use by Macports team members only, please do not set it.

[btywoniuk (Bart)]

Replying to kencu:

<​https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90835>

For right now, perhaps building against the 10.14 SDK might work...

Could you pleas guide me how to do that?

[kencu (Ken)]

I don’t think we have a guide for this at present.

You can get an idea of what to do from the libsdl2 portfile.

It’s a bit advanced and you might need one of the usual MacPorts devs who has Catalina running to set out the full process.

It’s possible it won’t work with something like gcc.

[ryandesign (Ryan Carsten Schmidt)]

Remember not to discuss issues with prerelease macOS versions publicly; see wiki:FAQ#prerelease.

[dlamija (Muhammed Ramiza)]

it's being fixed on full release Catalina 10.14. Considered Close!