mojave 32-bit compatible and universal builds

[Ken Cunningham]

> On Nov 4, 2018, at 5:54 AM, Ryan Schmidt <ryandesign at macports.org> wrote:

> I thought we decided we didn't want to pursue that idea, based on Joshua's objections, and instead we wanted to figure out a way to compile universal with the 10.14 SDK, maybe by making a universal 10.14 SDK,

That’s why I thought I’d actually try it. Turns out that idea fails quickly.

The 10.14 SDK has already been stripped of a number of 32-bit-only headers that cause 32bit builds to fail, e.g.

In file included from /opt/universal/var/macports/build/_opt_universal_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_audio_portmidi/portmidi/work/portmidi/pm_mac/readbinaryplist.c:81:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Carbon.framework/Headers/Carbon.h:34:10: fatal error: 'CarbonSound/CarbonSound.h' file not found
#include <CarbonSound/CarbonSound.h>


Viz: this from the 10.13 SDK:

$ pwd
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CarbonSound.framework/Versions/A/Headers
$ ls -la
total 64
drwxr-xr-x  7 cunningh  admin     238  6 Oct  2017 .
drwxr-xr-x  4 cunningh  admin     136  6 Oct  2017 ..
-rw-r--r--  1 cunningh  admin     674  6 Oct  2017 CarbonSound.h
-rw-r--r--  1 cunningh  admin     672  6 Oct  2017 CarbonSound.r
-rw-r--r--  1 cunningh  admin  114503  6 Oct  2017 Sound.h
-rw-r--r--  1 cunningh  admin    6894  6 Oct  2017 Sound.k.h
-rw-r--r--  1 cunningh  admin   14278  6 Oct  2017 Sound.r


and Viz: this from the 10.14 SDK:

$ pwd
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CarbonSound.framework/Versions/A/Headers
$ ls -la
total 0
drwxr-xr-x  4 root  wheel    128 30 Oct 19:25 .
drwxr-xr-x  3 root  wheel     96 30 Oct 19:25 ..
-rw-r--r--  1 root  wheel    672 15 Jul  2017 CarbonSound.r
-rw-r--r--  1 root  wheel  14278 15 Jul  2017 Sound.r



> or maybe by forcing the build to use libsystem.dylib instead of the tbd file as suggested by Jack.
> 

Yeah, /usr/bin/ld suggests that when you try compiling i386.

In the end, the thing that *does* work is to set the -isysroot to /path/to/MacOSX10.14.sdk  and the -syslibroot to /

No other combos were functional. A half-dozen ports that I ran across don’t respect the -isysroot and/or syslibroot settings from portconfigure, and need to be tweaked.

For all these reasons, I doubt anyone is going to fix this in MacPorts — but it is doable for someone who has great need for, say, wine on Mojave, should such a person exist.

Some things mysteriously just don’t work right, like libsdl, no surprise there.

K



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