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Re: MacOS: error: no matching function for call to 'objc_msgSend'

From: Benjamin Abbott
Subject: Re: MacOS: error: no matching function for call to 'objc_msgSend'
Date: Sat, 1 Feb 2020 17:17:36 -0800

On Feb 1, 2020, at 10:43 AM, Andrew Janke <address@hidden> wrote:

On 2/1/20 12:55 PM, Benjamin Abbott wrote:
On Feb 1, 2020, at 9:31 AM, Andrew Janke <address@hidden<mailto:address@hidden>> wrote:

On 2/1/20 12:13 AM, Benjamin Abbott wrote:
I’ve just upgraded to MacOS 10.15.3.
After upgrading Homebew, I now see the error below. It looks to me like this was introduced in changeset 27624. Have you upgraded to Catalina yet?
libtool: compile:  g++ -std=gnu++11 -DHAVE_CONFIG_H -I. -I/usr/local/opt/freetype/include/freetype2 -I/usr/local/Cellar/fontconfig/2.13.1/include -I/usr/local/opt/freetype/include/freetype2 -I/usr/local/Cellar/qt/5.14.1/lib/QtNetwork.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtPrintSupport.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtHelp.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtWidgets.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtGui.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtSql.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtXml.framework/Headers -I/usr/local/Cellar/qt/5.14.1/lib/QtCore.framework/Headers -I./libgui/qterminal/libqterminal -Ilibgui/src -I./libgui/src -Ilibgui/graphics -I./libgui/graphics -I./libgui/src/m-editor -Iliboctave -I./liboctave/array -Iliboctave/numeric -I./liboctave/numeric -Iliboctave/operators -I./liboctave/operators -I./liboctave/system -I./liboctave/util -Ilibinterp -I./libinterp -Ilibinterp/parse-tree -I./libinterp/parse-tree -Ilibinterp/corefcn -I./libinterp/corefcn -I./libinterp/octave-value -I./liboctave/wrappers -I/usr/local/opt/readline/include -I/usr/local/opt/sqlite/include -I/usr/local/opt/openssl/include -I/usr/local/opt/gettext/include -I/usr/local/opt/icu4c/include -I/usr/local/opt/qt5/include -I/usr/local/opt/sundials27/include -I/usr/local/opt/zlib/include -fPIC -D_THREAD_SAFE -pthread -Wall -W -Wshadow -Woverloaded-virtual -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings -Wcast-align -Wcast-qual -g -O2 -MT libgui/src/libgui_src_la-octave-qobject.lo -MD -MP -MF libgui/src/.deps/libgui_src_la-octave-qobject.Tpo -c libgui/src/octave-qobject.cc <http://octave-qobject.cc>  -fno-common -DPIC -o libgui/src/.libs/libgui_src_la-octave-qobject.o
libgui/src/octave-qobject.cc:91 <http://octave-qobject.cc:91>:18: error: no matching function for call to 'objc_msgSend'
  process_info = objc_msgSend (reinterpret_cast<id> (process_info_class),

Hi Ben,

Thanks for testing on Catalina! I don't have a Catalina box yet: I'm not upgrading my main machines, and I can't get Catalina to install under VMware.

I think this was introduced by change 27575 - the App Nap/pause fix - not 27624.

I'm afraid I have no idea how to get this working, and I don't have time to do research. The C/Obj-C interface changed with the macOS 10.15 Catalina SDK, and I don't really understand it.

I suggest we just modify the #ifs to completely disable the App Nap/Objective-C stuff on Catalina and later until someone comes along who actually knows what they're doing and can fix it for real.

Hi Andrew,
Do you think it is sufficient to back out one or two of your changesets?

It would be sufficient to back out change 27575. But I don't know if we want to do that: then we'd be back to the buggy pause()-takes-too-long behavior. Modifying the #ifs to disable it on just Catalina shouldn't be hard.


Thanks Andrew,

I replaced Q_OS_MAC with Q_OS_MAC_REMOVE in octave-qobject.cc and am able to build again.


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