Thiago Macieira wrote: > I've only ever tested LTO builds on Linux. That's where llvm-ar comes from -- > the *official* clang + LLVM build.
OK, so I tinkered with clang.conf such that a build using MacPort's clang-3.6 (clang++-mp-3.6) also uses the corresponding llvm-ar-mp-3.6 and llvm-nm-mp-3.6 , and qmodule.pri to make sure that clang++-mp-3.6 is the command used for linking (crucial for a LTO build with clang). Now, I'm seeing this failure: /opt/local/bin/llvm-ar-mp-3.6 cqs libQt5Bootstrap.a .obj/qcore_mac_objc.o .obj/qstring_mac.o .obj/qstandardpaths_mac.o .obj/qlatincodec.o .obj/qtextcodec.o .obj/qutfcodec.o .obj/qglobal.o .obj/qlogging.o .obj/qmalloc.o .obj/qnumeric.o .obj/qabstractfileengine.o .obj/qbuffer.o .obj/qdatastream.o .obj/qdebug.o .obj/qdir.o .obj/qdiriterator.o .obj/qfile.o .obj/qfileinfo.o .obj/qfilesystementry.o .obj/qfilesystemengine.o .obj/qfsfileengine.o .obj/qfsfileengine_iterator.o .obj/qiodevice.o .obj/qfiledevice.o .obj/qtemporaryfile.o .obj/qtextstream.o .obj/qstandardpaths.o .obj/qloggingcategory.o .obj/qloggingregistry.o .obj/qcoreapplication.o .obj/qcoreglobaldata.o .obj/qmetatype.o .obj/qvariant.o .obj/qsystemerror.o .obj/quuid.o .obj/qbitarray.o .obj/qbytearray.o .obj/qarraydata.o .obj/qbytearraymatcher.o .obj/qcommandlineparser.o .obj/qcommandlineoption.o .obj/qcryptographichash.o .obj/qdatetime.o .obj/qhash.o .obj/qlist.o .obj/qlinkedlist.o .obj/qlocale.o .obj/qlocale_tools.o .obj/qmap.o .obj/qregexp.o .obj/qpoint.o .obj/qrect.o .obj/qsize.o .obj/qline.o .obj/qstring.o .obj/qstring_compat.o .obj/qstringlist.o .obj/qvector.o .obj/qvsnprintf.o .obj/qxmlutils.o .obj/qxmlstream.o .obj/qjson.o .obj/qjsondocument.o .obj/qjsonobject.o .obj/qjsonarray.o .obj/qjsonvalue.o .obj/qjsonparser.o .obj/qjsonwriter.o .obj/qdom.o .obj/qxml.o .obj/qfilesystemengine_unix.o .obj/qfilesystemiterator_unix.o .obj/qfsfileengine_unix.o .obj/qcoreapplication_mac.o .obj/qcore_mac.o rm -f ../../../lib/libQt5Bootstrap.a mv -f libQt5Bootstrap.a ../../../lib/ ... gmake[3]: Entering directory '/opt/local/var/macports/build/qt5-kde-devel/qt5- kde-devel-x11/work/build/qtbase/src/tools/moc' /opt/local/var/macports/build/qt5-kde-devel/qt5-kde-devel- x11/work/build/qtbase/bin/qmake -config ltcg -o Makefile /opt/local/var/macports/build/qt5-kde-devel/qt5-kde-devel-x11/work/qt- everywhere-opensource-src-5.5.0/qtbase/src/tools/moc/moc.pro ... /opt/local/bin/clang++-mp-3.6 -L/opt/local/lib -Wl,-headerpad_max_install_names -O3 -march=core2 -g -Wl,-dead_strip -Wl,- syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -stdlib=libc++ -mmacosx-version-min=10.7 -O2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -std=c++11 -flto -fPIC -o ../../../bin/moc .obj/moc.o .obj/preprocessor.o .obj/generator.o .obj/parser.o .obj/token.o .obj/main.o - L/opt/local/var/macports/build/qt5-kde-devel/qt5-kde-devel- x11/work/build/qtbase/lib -lQt5Bootstrap -framework Foundation -framework CoreServices -lz >>> ld: warning: ignoring file /opt/local/var/macports/build/qt5-kde-devel/qt5- kde-devel-x11/work/build/qtbase/lib/libQt5Bootstrap.a, file was built for archive which is not the architecture being linked (x86_64): /opt/local/var/macports/build/qt5-kde-devel/qt5-kde-devel- x11/work/build/qtbase/lib/libQt5Bootstrap.a Undefined symbols for architecture x86_64: "QFileInfo::filePath() const", referenced from: (followed by several pages of missing symbols) Googling the error suggests either a missing x86_64 architecture (not the case) or a mismatch between the linker and ar, which is obviously also not the case: %> llvm-ar-mp-3.6 --version LLVM (http://llvm.org/): LLVM version 3.6.1 Optimized build. Built Jun 24 2015 (10:49:09). Default target: x86_64-apple-darwin13.4.0 Host CPU: corei7-avx %> clang++-mp-3.6 --version clang version 3.6.1 (tags/RELEASE_361/final) Target: x86_64-apple-darwin13.4.0 Thread model: posix So WTH?! R. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
