qt4-mac fails to build when libevent is active

[celil.rufat@…]

Trying to upgrade to the latest version of qt4-mac, I get the following output in debug mode:

(...)
/usr/bin/g++-4.2 -c -include .pch/debug-shared/QtWebKit -pipe -Wreturn-type -fno-strict-aliasing -fconstant-cfstrings -I/opt/local/include -O2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -fPIC -DQT_SHARED -DBUILDING_QT__=1 -DNDEBUG -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DBUILD_WEBKIT -DENABLE_JAVASCRIPT_DEBUGGER=1 -DENABLE_DATABASE=1 -DENABLE_EVENTSOURCE=1 -DENABLE_OFFLINE_WEB_APPLICATIONS=1 -DENABLE_DOM_STORAGE=1 -DENABLE_ICONDATABASE=1 -DENABLE_CHANNEL_MESSAGING=1 -DENABLE_ORIENTATION_EVENTS=0 -DENABLE_SQLITE=1 -DENABLE_DASHBOARD_SUPPORT=0 -DENABLE_FILTERS=0 -DENABLE_XPATH=1 -DENABLE_WCSS=0 -DENABLE_WML=0 -DENABLE_SHARED_WORKERS=1 -DENABLE_WORKERS=1 -DENABLE_XHTMLMP=0 -DENABLE_DATAGRID=1 -DENABLE_SVG=1 -DENABLE_SVG_FONTS=1 -DENABLE_SVG_FOREIGN_OBJECT=1 -DENABLE_SVG_ANIMATION=1 -DENABLE_SVG_AS_IMAGE=1 -DENABLE_SVG_USE=1 -DENABLE_RUBY=1 -DENABLE_VIDEO=1 -DENABLE_DATALIST=1 -DENABLE_NETSCAPE_PLUGIN_API=1 -DENABLE_WEB_SOCKETS=1 -DENABLE_XSLT=1 -DWTF_USE_JAVASCRIPTCORE_BINDINGS=1 -DWTF_CHANGES=1 -DBUILDING_QT__ -DBUILDING_JavaScriptCore -DBUILDING_WTF -DQT_NO_DEBUG -DQT_XMLPATTERNS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../../../mkspecs/macx-g++ -I. -I../../../../include/QtCore -I../../../../include/QtNetwork -I../../../../include/QtGui -I../../../../include/QtXmlPatterns -I../../../../include -Ibridge/qt -Ipage/qt -Iplatform/graphics/qt -Iplatform/network/qt -Iplatform/qt -I../WebKit/qt/WebCoreSupport -I. -Iaccessibility -Ibindings/js -Ibridge -Ibridge/c -Icss -Idom -Idom/default -Iediting -Ihistory -Ihtml -Ihtml/canvas -Iinspector -Iloader -Iloader/appcache -Iloader/archive -Iloader/icon -Inotifications -Ipage -Ipage/animation -Iplatform -Iplatform/animation -Iplatform/graphics -Iplatform/graphics/filters -Iplatform/graphics/transforms -Iplatform/image-decoders -Iplatform/mock -Iplatform/network -Iplatform/sql -Iplatform/text -Iplugins -Irendering -Irendering/style -Istorage -Isvg -Isvg/animation -Isvg/graphics -Isvg/graphics/filters -Iwebsockets -Iwml -Iworkers -Ixml -Igenerated -I../JavaScriptCore -I../../webkit -I../JavaScriptCore/assembler -I../JavaScriptCore/bytecode -I../JavaScriptCore/bytecompiler -I../JavaScriptCore/debugger -I../JavaScriptCore/interpreter -I../JavaScriptCore/jit -I../JavaScriptCore/parser -I../JavaScriptCore/profiler -I../JavaScriptCore/runtime -I../JavaScriptCore/wrec -I../JavaScriptCore/wtf -I../JavaScriptCore/wtf/unicode -I../JavaScriptCore/yarr -I../JavaScriptCore/API -I../JavaScriptCore/ForwardingHeaders -Igenerated -I../WebKit/qt/Api -I../../../../include/QtWebKit -I.rcc/debug-shared -I../JavaScriptCore/pcre -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0/src/3rdparty/webkit/WebKitBuild/Release/JavaScriptCore/tmp -Iplatform/mac -I../../../../include/phonon -I../../../../lib/phonon.framework/Versions/4/Headers -I.moc/release-shared -F/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0/lib -o obj/release/JSEventListener.o bindings/js/JSEventListener.cpp
bindings/js/JSEventListener.cpp: In member function 'virtual void WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*)':
bindings/js/JSEventListener.cpp:118: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:126: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:127: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:131: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp: In member function 'virtual void WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*)':
bindings/js/JSEventListener.cpp:118: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:126: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:127: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
bindings/js/JSEventListener.cpp:131: error: invalid use of incomplete type 'struct WebCore::Event'
dom/EventListener.h:35: error: forward declaration of 'struct WebCore::Event'
make[2]: *** [obj/release/JSEventListener.o] Error 1
make[1]: *** [release-all] Error 2
make[1]: *** Waiting for unfinished jobs....
/usr/bin/g++-4.2 -c -include .pch/debug-shared/QtWebKit_debug -pipe -Wreturn-type -fno-strict-aliasing -fconstant-cfstrings -I/opt/local/include -gdwarf-2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -fPIC -DQT_SHARED -DBUILDING_QT__=1 -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DNDEBUG -DBUILD_WEBKIT -DENABLE_JAVASCRIPT_DEBUGGER=1 -DENABLE_DATABASE=1 -DENABLE_EVENTSOURCE=1 -DENABLE_OFFLINE_WEB_APPLICATIONS=1 -DENABLE_DOM_STORAGE=1 -DENABLE_ICONDATABASE=1 -DENABLE_CHANNEL_MESSAGING=1 -DENABLE_ORIENTATION_EVENTS=0 -DENABLE_SQLITE=1 -DENABLE_DASHBOARD_SUPPORT=0 -DENABLE_FILTERS=0 -DENABLE_XPATH=1 -DENABLE_WCSS=0 -DENABLE_WML=0 -DENABLE_SHARED_WORKERS=1 -DENABLE_WORKERS=1 -DENABLE_XHTMLMP=0 -DENABLE_DATAGRID=1 -DENABLE_SVG=1 -DENABLE_SVG_FONTS=1 -DENABLE_SVG_FOREIGN_OBJECT=1 -DENABLE_SVG_ANIMATION=1 -DENABLE_SVG_AS_IMAGE=1 -DENABLE_SVG_USE=1 -DENABLE_RUBY=1 -DENABLE_VIDEO=1 -DENABLE_DATALIST=1 -DENABLE_NETSCAPE_PLUGIN_API=1 -DENABLE_WEB_SOCKETS=1 -DENABLE_XSLT=1 -DWTF_USE_JAVASCRIPTCORE_BINDINGS=1 -DWTF_CHANGES=1 -DBUILDING_QT__ -DBUILDING_JavaScriptCore -DBUILDING_WTF -DQT_XMLPATTERNS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../../../mkspecs/macx-g++ -I. -I../../../../include/QtCore -I../../../../include/QtNetwork -I../../../../include/QtGui -I../../../../include/QtXmlPatterns -I../../../../include -Ibridge/qt -Ipage/qt -Iplatform/graphics/qt -Iplatform/network/qt -Iplatform/qt -I../WebKit/qt/WebCoreSupport -I. -Iaccessibility -Ibindings/js -Ibridge -Ibridge/c -Icss -Idom -Idom/default -Iediting -Ihistory -Ihtml -Ihtml/canvas -Iinspector -Iloader -Iloader/appcache -Iloader/archive -Iloader/icon -Inotifications -Ipage -Ipage/animation -Iplatform -Iplatform/animation -Iplatform/graphics -Iplatform/graphics/filters -Iplatform/graphics/transforms -Iplatform/image-decoders -Iplatform/mock -Iplatform/network -Iplatform/sql -Iplatform/text -Iplugins -Irendering -Irendering/style -Istorage -Isvg -Isvg/animation -Isvg/graphics -Isvg/graphics/filters -Iwebsockets -Iwml -Iworkers -Ixml -Igenerated -I../JavaScriptCore -I../../webkit -I../JavaScriptCore/assembler -I../JavaScriptCore/bytecode -I../JavaScriptCore/bytecompiler -I../JavaScriptCore/debugger -I../JavaScriptCore/interpreter -I../JavaScriptCore/jit -I../JavaScriptCore/parser -I../JavaScriptCore/profiler -I../JavaScriptCore/runtime -I../JavaScriptCore/wrec -I../JavaScriptCore/wtf -I../JavaScriptCore/wtf/unicode -I../JavaScriptCore/yarr -I../JavaScriptCore/API -I../JavaScriptCore/ForwardingHeaders -Igenerated -I../WebKit/qt/Api -I../../../../include/QtWebKit -I.rcc/debug-shared -I../JavaScriptCore/pcre -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0/src/3rdparty/webkit/WebKitBuild/Debug/JavaScriptCore/tmp -Iplatform/mac -I../../../../include/phonon -I../../../../lib/phonon.framework/Versions/4/Headers -I.moc/debug-shared -F/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0/lib -o obj/debug/JSLazyEventListener.o bindings/js/JSLazyEventListener.cpp
make[2]: *** [obj/debug/JSEventListener.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [debug-all] Error 2
make: *** [sub-webkit-make_default-ordered] Error 2
Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0" && /usr/bin/make -j2 first " returned error 2
DEBUG: Backtrace: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_aqua_qt4-mac/work/qt-everywhere-opensource-src-4.6.0" && /usr/bin/make -j2 first " returned error 2
    while executing
"command_exec build"
    (procedure "portbuild::build_main" line 9)
    invoked from within
"$procedure $targetname"
Warning: the following items did not execute (for qt4-mac): org.macports.destroot org.macports.build
DEBUG: Registry error: py26-pyobjc2 not registered as installed & active.
    while executing
"registry::active $portname"
Error: Unable to upgrade port: 1
To report a bug, see <http://guide.macports.org/#project.tickets>

[celil.rufat@…]

I'm running Snow Leopard 10.6

$ uname -v
Darwin Kernel Version 10.2.0: Tue Nov  3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386

[aleksey.ovcharenko@…]

Replying to celil.rufat@…:

I'm running Snow Leopard 10.6

$ uname -v
Darwin Kernel Version 10.2.0: Tue Nov  3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386

Try 'sudo port deactivate libevent' before build. You may activate it later when installation succeed.

[sharky@…]

The latests qt4-mac has been marked as conflicting with "libevent" so this issue should be fixed.

[macports@…]

I got this problem right now, when performing a "port upgrade outdated". I did a "port selfupdate" just before that. Deactivating libevent solved the issue.

[ryandesign (Ryan Carsten Schmidt)]

This is because the conflicts keyword deals with conflicts at activation time, for situations like when two ports install the same files (e.g. graphviz and graphviz-devel); it does not deal with conflicts at build time, such as qt4-mac's problem building when libevent is active. MacPorts base needs a new keyword to model build-time conflicts, and to reduce confusion the existing conflicts keyword might need to be renamed as well.

[ryandesign (Ryan Carsten Schmidt)]

I'm going to call this a duplicate of #20199.