kdelibs4 fails with undefined _inotify* symbols if Macports prefix happens to have inotify.h installed by an unrelated port

[barracuda156]

:info:build cd /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/build/kjs && /usr/bin/g++-4.2 -DBUILDING_KDE__ -DKDE4_CMAKE_TOPLEVEL_DIR_LENGTH=139 -DKDE_DEPRECATED_WARNINGS -DMAKE_KJS_LIB -DQT_NO_CAST_TO_ASCII -DQT_NO_STL -DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS -D_REENTRANT -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/build/kjs -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kjs -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/build -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/interfaces -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/build/kdecore -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/compression -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/config -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/date -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/io -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/jobs -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/kernel -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/auth -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/network -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/services -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/localization -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/sycoca -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/text -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/util -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kdecore/sonnet -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kjs/wtf -I/opt/local/libexec/qt4/include/QtCrypto -I/opt/local/libexec/qt4/include/QtXmlPatterns -I/opt/local/libexec/qt4/include/QtXml -I/opt/local/libexec/qt4/include/QtWebKit -I/opt/local/libexec/qt4/include/QtUiTools -I/opt/local/libexec/qt4/include/QtTest -I/opt/local/libexec/qt4/include/QtSvg -I/opt/local/libexec/qt4/include/QtSql -I/opt/local/libexec/qt4/include/QtScriptTools -I/opt/local/libexec/qt4/include/QtScript -I/opt/local/libexec/qt4/include/QtOpenGL -I/opt/local/libexec/qt4/include/QtNetwork -I/opt/local/libexec/qt4/include/QtMultimedia -I/opt/local/libexec/qt4/include/QtHelp -I/opt/local/libexec/qt4/include/QtDesigner -I/opt/local/libexec/qt4/include/QtDeclarative -I/opt/local/libexec/qt4/include/QtDBus -I/opt/local/libexec/qt4/lib/QtAssistant.framework/Headers -I/opt/local/libexec/qt4/include/Qt3Support -I/opt/local/libexec/qt4/include/QtGui -I/opt/local/libexec/qt4/include/QtCore -I/opt/local/libexec/qt4/include -I/opt/local/libexec/qt4/share/mkspecs/default -I/opt/local/include -pipe -Os -DNDEBUG -fno-common -Wnon-virtual-dtor -Wno-long-long -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wformat-security -fno-exceptions -DQT_NO_EXCEPTIONS -fno-check-new -fno-common -Woverloaded-virtual -fvisibility=hidden -Werror=return-type -fvisibility-inlines-hidden -arch ppc -mmacosx-version-min=10.6 -fPIC   -D__APPLE_KDE__  -MD -MT kjs/CMakeFiles/kjs.dir/Parser.o -MF CMakeFiles/kjs.dir/Parser.o.d -o CMakeFiles/kjs.dir/Parser.o -c /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kdelibs4/kdelibs4/work/kdelibs-4.14.3/kjs/Parser.cpp
:info:build Undefined symbols:
:info:build   "_inotify_init", referenced from:
:info:build       KDirWatchPrivate::KDirWatchPrivate()in kdirwatch.o
:info:build   "_inotify_rm_watch", referenced from:
:info:build       KDirWatchPrivate::removeWatch(KDirWatchPrivate::Entry*)in kdirwatch.o
:info:build       KDirWatchPrivate::addEntry(KDirWatch*, QString const&, KDirWatchPrivate::Entry*, bool, QFlags<KDirWatch::WatchMode>)in kdirwatch.o
:info:build   "_inotify_add_watch", referenced from:
:info:build       KDirWatchPrivate::useINotify(KDirWatchPrivate::Entry*)in kdirwatch.o
:info:build       KDirWatchPrivate::addEntry(KDirWatch*, QString const&, KDirWatchPrivate::Entry*, bool, QFlags<KDirWatch::WatchMode>)in kdirwatch.o
:info:build ld: symbol(s) not found
:info:build collect2: ld returned 1 exit status
:info:build make[2]: *** [lib/libkdecore.5.14.3.dylib] Error 1

I thought libinotify is not supported on macOS at all. Any idea why these?

[cooljeanius (Eric Gallager)]

Does trace mode say anything?

[barracuda156]

Replying to cooljeanius:

Does trace mode say anything?

I am not sure it even works (either on ppc generally, or on 10.6, or on 10.6 when building for ppc – I remember last time I tried it, it failed).

(And it will take forever to build all needed deps on 10.5 from scratch, even if trace mode works there.)

[barracuda156]

Replying to kencu:

Could anyone verify if it builds with gcc-4.2 on any OS/arch? If not, we should just blacklist it.

[kencu (Ken)]

rather than blindly blacklisting without understanding the issue, what you want to do is see where those symbols usually come from (os? build?) and once you know that, then see why they aren’t found when building on 10.6 PowerPC.

[cooljeanius (Eric Gallager)]

Replying to barracuda156:

Replying to cooljeanius:

Does trace mode say anything?

I am not sure it even works (either on ppc generally, or on 10.6, or on 10.6 when building for ppc – I remember last time I tried it, it failed).

(And it will take forever to build all needed deps on 10.5 from scratch, even if trace mode works there.)

I remember trace mode working for me back when I was still on Snow Leopard...

[barracuda156]

It looks like sys/inotify.h does not exist on macOS (and nothing specific to either PPC or 10.6 of any sort): ​https://gitlab.freedesktop.org/mesa/mesa/-/issues/8101

However, kdelibs4 configure detects as if it is, setting this:

//Have include sys/inotify.h
SYS_INOTIFY_H_FOUND:INTERNAL=1

Which results in usage of those symbols due to related code in kdecore/io/kdirwatch.cpp.

Apparently, this happens because something installed inotify.h into Macports prefix for me. (Quite possible that this was not from existing ports, but from something I built locally and did not submit since it was not ready yet.)

[barracuda156]

Replying to kencu:

This can be closed, I believe. Nothing specific to either ppc or 10.6, and notabug really, but rather a conflict. I suspect, it is something which I installed earlier from Linux ports when tried to get an alternative of GCD, and never submitted it because tests did not pass.

[kencu (Ken)]

OK, thanks for checking

[cooljeanius (Eric Gallager)]

Replying to barracuda156:

Apparently, this happens because something installed inotify.h into Macports prefix for me. (Quite possible that this was not from existing ports, but from something I built locally and did not submit since it was not ready yet.)

What does port provides on it say?