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Undefined symbols for architecture x86_64: "hex(QTextStream&)", referenced from: (Installing PyQwt-5.2.0 on Mac)

I am trying to install the emzed python package for LC/MS analysis. This package is dependent on PyQt4 and PyQWT. I have installed everything but have not been able to build PyQWT. I have jumped through so many errors and I have been stuck on this linking error for a while.

I have tried modifying the makefile (Qwt_version_info.mak) to pass it include directories. I do not know how to specify the appropriate linking library to get his too compile (the QTextStream, etc)

$  make -f qwt_version_info.mak 
Are we linking yet?1
Are we linking yet?2
Are we linking yet?3
Are we linking yet?4
Are we linking yet?5
g++ -v -headerpad_max_install_names -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o      
Apple LLVM version 10.0.1 (clang-1001.0.46.4)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 "/Library/Developer/CommandLineTools/usr/bin/ld" -demangle -lto_library /Library/Developer/CommandLineTools/usr/lib/libLTO.dylib -dynamic -arch x86_64 -headerpad_max_install_names -macosx_version_min 10.9.0 -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o -lc++ -lSystem /Library/Developer/CommandLineTools/usr/lib/clang/10.0.1/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
  "hex(QTextStream&)", referenced from:
      _main in qwt_version_info.o
  "QArrayData::deallocate(QArrayData*, unsigned long, unsigned long)", referenced from:
      QTypedArrayData<unsigned short>::deallocate(QArrayData*) in qwt_version_info.o
  "QTextStream::QTextStream(QIODevice*)", referenced from:
      _main in qwt_version_info.o
  "QTextStream::~QTextStream()", referenced from:
      _main in qwt_version_info.o
  "QTextStream::operator<<(char const*)", referenced from:
      _main in qwt_version_info.o
  "QTextStream::operator<<(int)", referenced from:
      _main in qwt_version_info.o
  "QFile::open(QFlags<QIODevice::OpenModeFlag>)", referenced from:
      _main in qwt_version_info.o
  "QFile::QFile(QString const&)", referenced from:
      _main in qwt_version_info.o
  "QFile::~QFile()", referenced from:
      _main in qwt_version_info.o
  "QString::fromAscii_helper(char const*, int)", referenced from:
      QString::QString(char const*) in qwt_version_info.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [qwt_version_info.app/Contents/MacOS/qwt_version_info] Error 1

This is the makefile.

1591 $  cat qwt_version_info.mak 
#############################################################################
# Makefile for building: qwt_version_info.app/Contents/MacOS/qwt_version_info
# Generated by qmake (2.01a) (Qt 4.8.7) on: Tue Aug 13 11:31:21 2019
# Project:  qwt_version_info.pro
# Template: app
# Command: /usr/local/opt/qt@4/bin/qmake -spec /usr/local/etc/qt4/mkspecs/macx-g++ -o qwt_version_info.mak qwt_version_info.pro
#############################################################################

####### Compiler, tools and options

CC            = gcc
CXX           = g++
DEFINES       = 
CFLAGS        = -pipe $(DEFINES)
CXXFLAGS      = -pipe -std=c++11 $(DEFINES)
INCPATH       = -I/usr/local/etc/qt4/mkspecs/macx-g++ -I. -I../qwt-5.2/src -I/usr/local/Cellar/qt@4/4.8.7_5/lib/QtCore.framework/Versions/4/Headers -I/usr/local/Cellar/sip/4.19.8_12/include -I/Users/Danny/.virtualenvs/emzed2.7/lib/python2.7/site-packages/numpy/core/include
LINK          = g++
LFLAGS        = -headerpad_max_install_names
LIBS          = $(SUBLIBS)    
AR            = ar cq
RANLIB        = ranlib -s
QMAKE         = /usr/local/opt/qt@4/bin/qmake
TAR           = tar -cf
COMPRESS      = gzip -9f
COPY          = cp -f
SED           = sed
COPY_FILE     = cp -f
COPY_DIR      = cp -f -R
STRIP         = 
INSTALL_FILE  = $(COPY_FILE)
INSTALL_DIR   = $(COPY_DIR)
INSTALL_PROGRAM = $(COPY_FILE)
DEL_FILE      = rm -f
SYMLINK       = ln -f -s
DEL_DIR       = rmdir
MOVE          = mv -f
CHK_DIR_EXISTS= test -d
MKDIR         = mkdir -p
export MACOSX_DEPLOYMENT_TARGET = 10.9

####### Output directory

OBJECTS_DIR   = ./

####### Files

SOURCES       = qwt_version_info.cpp 
OBJECTS       = qwt_version_info.o
DIST          = /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/unix.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/mac.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/gcc-base.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/gcc-base-macx.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/g++-base.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/g++-macx.conf \
        qwt_version_info.pro
QMAKE_TARGET  = qwt_version_info
DESTDIR       = 
TARGET        = qwt_version_info.app/Contents/MacOS/qwt_version_info

first: all
####### Implicit rules

.SUFFIXES: .o .c .cpp .cc .cxx .C

.cpp.o:
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<"

.cc.o:
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<"

.cxx.o:
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<"

.C.o:
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -o "$@" "$<"

.c.o:
    $(CC) -c $(CFLAGS) $(INCPATH) -o "$@" "$<"

####### Build rules

all: qwt_version_info.mak qwt_version_info.app/Contents/PkgInfo qwt_version_info.app/Contents/Resources/empty.lproj $(TARGET)

$(TARGET):  $(OBJECTS)  
    @$(CHK_DIR_EXISTS) qwt_version_info.app/Contents/MacOS/ || $(MKDIR) qwt_version_info.app/Contents/MacOS/ 
    $(LINK) -v $(LFLAGS) -o $(TARGET) $(OBJECTS) $(OBJCOMP) $(LIBS)

$(info Are we linking yet?1)

qwt_version_info.mak: qwt_version_info.pro  /usr/local/etc/qt4/mkspecs/macx-g++/qmake.conf /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/unix.conf \
        /usr/local/etc/qt4/mkspecs/common/mac.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/gcc-base.conf \
        /usr/local/etc/qt4/mkspecs/common/gcc-base-macx.conf \
        /usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/g++-base.conf \
        /usr/local/etc/qt4/mkspecs/common/g++-macx.conf
    $(QMAKE) -spec /usr/local/etc/qt4/mkspecs/macx-g++ -o qwt_version_info.mak qwt_version_info.pro
/usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/unix.conf:
/usr/local/etc/qt4/mkspecs/common/mac.conf:
/usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/gcc-base.conf:
/usr/local/etc/qt4/mkspecs/common/gcc-base-macx.conf:
/usr/local/Cellar/qt@4/4.8.7_5/etc/qt4/mkspecs/common/g++-base.conf:
/usr/local/etc/qt4/mkspecs/common/g++-macx.conf:
qmake:  FORCE
    @$(QMAKE) -spec /usr/local/etc/qt4/mkspecs/macx-g++ -o qwt_version_info.mak qwt_version_info.pro


$(info Are we linking yet?2)

qwt_version_info.app/Contents/PkgInfo: 
    @$(CHK_DIR_EXISTS) qwt_version_info.app/Contents || $(MKDIR) qwt_version_info.app/Contents 
    @$(DEL_FILE) qwt_version_info.app/Contents/PkgInfo
    @echo "APPL????" >qwt_version_info.app/Contents/PkgInfo
qwt_version_info.app/Contents/Resources/empty.lproj: 
    @$(CHK_DIR_EXISTS) qwt_version_info.app/Contents/Resources || $(MKDIR) qwt_version_info.app/Contents/Resources 
    @touch qwt_version_info.app/Contents/Resources/empty.lproj

: 
    @$(DEL_FILE) 
    @sed -e "s,@SHORT_VERSION@,1.0,g" -e "s,@TYPEINFO@,????,g" -e "s,@ICON@,,g" -e "s,@EXECUTABLE@,qwt_version_info,g" -e "s,@TYPEINFO@,????,g"  >
dist: 
    @$(CHK_DIR_EXISTS) .tmp/qwt_version_info1.0.0 || $(MKDIR) .tmp/qwt_version_info1.0.0 
    $(COPY_FILE) --parents $(SOURCES) $(DIST) .tmp/qwt_version_info1.0.0/ && (cd `dirname .tmp/qwt_version_info1.0.0` && $(TAR) qwt_version_info1.0.0.tar qwt_version_info1.0.0 && $(COMPRESS) qwt_version_info1.0.0.tar) && $(MOVE) `dirname .tmp/qwt_version_info1.0.0`/qwt_version_info1.0.0.tar.gz . && $(DEL_FILE) -r .tmp/qwt_version_info1.0.0

$(info Are we linking yet?3)

clean:compiler_clean 
    -$(DEL_FILE) $(OBJECTS)
    -$(DEL_FILE) *~ core *.core


####### Sub-libraries

distclean: clean
    -$(DEL_FILE) -r qwt_version_info.app
    -$(DEL_FILE) qwt_version_info.mak


compiler_clean: 

####### Compile

$(info Are we linking yet?4)
qwt_version_info.o: qwt_version_info.cpp 
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -o qwt_version_info.o qwt_version_info.cpp

$(info Are we linking yet?5)
####### Install

install:   FORCE

uninstall:   FORCE

FORCE:

Any help is much appreciated.

Update: under /usr/local/Cellar/qt@4/4.8.7_5/lib/QtCore.framework I found a binary called QtCore. I renamed it libQtCore.so and when I linked it with this binary this is my new error message:

$ g++ -v -headerpad_max_install_names -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o  -L/usr/local/Cellar/qt@4/4.8.7_5/lib/QtCore.framework -lQtCore

 "/Library/Developer/CommandLineTools/usr/bin/ld" -demangle -lto_library /Library/Developer/CommandLineTools/usr/lib/libLTO.dylib -dynamic -arch x86_64 -headerpad_max_install_names -macosx_version_min 10.14.0 -o qwt_version_info.app/Contents/MacOS/qwt_version_info -L/usr/local/Cellar/qt@4/4.8.7_5/lib/QtCore.framework qwt_version_info.o -lQtCore -lc++ -lSystem /Library/Developer/CommandLineTools/usr/lib/clang/10.0.1/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
  "QArrayData::deallocate(QArrayData*, unsigned long, unsigned long)", referenced from:
      QTypedArrayData<unsigned short>::deallocate(QArrayData*) in qwt_version_info.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Now I just need help finding where the library binary for theQArrayData symbols is found. I have not been able to find anything helpful on google.

Solution

  • This may not be the complete answer yet, but its too large to put into a comment.

    So lets focus on the single line here:

    g++ -v -headerpad_max_install_names -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o

    Now you are getting undefined references to things like: QByteArray and QTextStream. These all live in the library (IIRC) qtxcore or qtxcored (debug) where the x is the qt version. So I imagine for you it is libqt4core.so or libqt4cored.so.

    So we need two bits of information, we need to know where this is install and which type (debug or release) you have.

    The libraries are usually somewhere in /usr/lib/... and you will find libqt5core[d].so somewhere in there (IIRC /usr/lib/qt4/ - but that is a bit of a guess).

    Lets assume you have the debug libraries - but both may well be there, then we can link that library in to your linker line:

    Note: just run this line manually to start with and then we will add it to your makefile.

    g++ -v -headerpad_max_install_names -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o -L/usr/lib/qt4 -lqt4cored

    Here you can see that we have added a path to where the library is (-L...) and the library itself (-l...).

    Now this will enable your linker to find QByteArray etc... but then you will probably have a few more things you are missing depending what bits of Qt you are using. Here is a list of other possible libs you may need to add:

    libQt4Gui.so
libQt4Core.so
libQt4DBus.so
libQt4PrintSupport.so
libQt4Widgets.so
libQt4Network.so
libQt4XcbQpa.so
libQt4Svg.so
libicui18n.so
libicuuc.so
libicudata.so

    Note: I got this list from another question I was answering a long while back so it may need editing and you may or may-not want to use the debug version (e.g. libQt5Gui.so -> libQt5Guid.so). The list is in no particular order.

    So you could end up with:

    g++ -v -headerpad_max_install_names -o qwt_version_info.app/Contents/MacOS/qwt_version_info qwt_version_info.o -L/usr/lib/qt4 -lqt4cored -licudata -licuuc ... etc...

    Get this line working and then we can see about adding it to your makefile - adding the libs/paths is trivial.