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What I needed to do was set the flag in CMAKE program

CMAKE_OSX_SYSROOT ......'empty'

and change it to
CMAKE_OSX_SYSROOT ....... '/usr/local/bin'

This fixed the complier error...
now when reconfigured and I generate the make files
It passes no error

But here's the output after 'make'

MacBook:build gunterbischof$ make
[ 1%] Generating qrc_qsynth.cxx
/qsynth-0.3.9/src/qsynth.qrc: Warning: potential duplicate alias detected: 'qtlogo.png'
[ 3%] Generating ui_qsynthAboutForm.h
[ 5%] Generating ui_qsynthChannelsForm.h
[ 7%] Generating ui_qsynthMainForm.h
[ 8%] Generating ui_qsynthMessagesForm.h
[ 10%] Generating ui_qsynthOptionsForm.h
[ 12%] Generating ui_qsynthPresetForm.h
[ 14%] Generating ui_qsynthSetupForm.h
[ 16%] Generating moc_qsynthKnob.cxx
[ 17%] Generating moc_qsynthMeter.cxx
[ 19%] Generating moc_qsynthSystemTray.cxx
[ 21%] Generating moc_qsynthTabBar.cxx
[ 23%] Generating moc_qsynthAboutForm.cxx
[ 25%] Generating moc_qsynthChannelsForm.cxx
[ 26%] Generating moc_qsynthMainForm.cxx
[ 28%] Generating moc_qsynthMessagesForm.cxx
[ 30%] Generating moc_qsynthOptionsForm.cxx
[ 32%] Generating moc_qsynthPresetForm.cxx
[ 33%] Generating moc_qsynthSetupForm.cxx
Scanning dependencies of target qsynth
[ 35%] Building CXX object src/CMakeFiles/qsynth.dir/moc_qsynthKnob.cxx.o
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qnamespace.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobjectdefs.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwindowdefs.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:45:20: error: stddef.h: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:68:21: error: algorithm: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:311:34: error: AvailabilityMacros.h: No such file or directory
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:48,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:48:20: error: string.h: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:49:20: error: stdarg.h: No such file or directory
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:48,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:54:20: error: string: No such file or directory
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:50:20: error: iterator: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:51:16: error: list: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:58:15: error: new: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:59:20: error: limits.h: No such file or directory
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qpalette.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:52:18: error: vector: No such file or directory
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:54:20: error: stdlib.h: No such file or directory
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qnamespace.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobjectdefs.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwindowdefs.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2188: error: ‘std::swap’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2245: error: ‘size_t’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2247: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2248: error: ‘size_t’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2248: error: ‘size_t’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2248: error: initializer expression list treated as compound expression
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2249: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2249: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2249: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2251: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2252: error: ‘size_t’ has not been declared
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:48,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h: In function ‘uint qstrlen(const char*)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:80: error: ‘strlen’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h: In function ‘int qstrncmp(const char*, const char*, uint)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:103: error: ‘strncmp’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:110: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:110: error: ‘va_list’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:111: error: ‘size_t’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h: In function ‘bool operator==(const QByteArray&, const QByteArray&)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:528: error: ‘memcmp’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:611: error: expected initializer before ‘<’ token
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:48,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:58: error: expected initializer before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:174: error: ‘va_list’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:487: error: expected unqualified-id before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:487: error: expected ‘,’ or ‘...’ before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:488: error: ‘string’ in namespace ‘std’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:494: error: expected ‘,’ or ‘...’ before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:494: error: ISO C++ forbids declaration of ‘QStdWString’ with no type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:495: error: ‘QStdWString’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1044: error: ‘string’ in namespace ‘std’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1047: error: expected unqualified-id before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1047: error: expected ‘,’ or ‘...’ before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h: In static member function ‘static QString QString::fromStdString()’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1048: error: ‘s’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1051: error: ‘QStdWString’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1065: error: expected ‘,’ or ‘...’ before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1065: error: ISO C++ forbids declaration of ‘QStdWString’ with no type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h: In static member function ‘static QString QString::fromStdWString(int)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1066: error: ‘s’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:1095: error: expected initializer before ‘<’ token
In file included from /usr/local/Cellar/qt/4.8.6/include/QtCore/qobject.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:184: error: ‘random_access_iterator_tag’ in namespace ‘std’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:231: error: ‘random_access_iterator_tag’ in namespace ‘std’ does not name a type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:345: error: expected unqualified-id before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:345: error: expected ‘,’ or ‘...’ before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:347: error: ISO C++ forbids declaration of ‘list’ with no type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:347: error: invalid use of ‘::’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:347: error: expected ‘;’ before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:351: error: expected `;' before ‘private’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h: In static member function ‘static QList QList::fromStdList()’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:346: error: ‘list’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:346: error: ‘back_inserter’ is not a member of ‘std’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h: In member function ‘void QList::append(const T&)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:510: error: ‘INT_MAX’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h: In member function ‘QList& QList::operator+=(const QList&)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:825: error: ‘INT_MAX’ was not declared in this scope
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qpalette.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:308: error: expected unqualified-id before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:308: error: expected ‘,’ or ‘...’ before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:310: error: ISO C++ forbids declaration of ‘vector’ with no type
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:310: error: invalid use of ‘::’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:310: error: expected ‘;’ before ‘<’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:313: error: expected `;' before ‘private’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In static member function ‘static QVector QVector::fromStdVector()’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:309: error: ‘vector’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:309: error: ‘back_inserter’ is not a member of ‘std’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In member function ‘void QVector::realloc(int, int)’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:503: error: ‘::memcpy’ has not been declared
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:513: error: expected unqualified-id before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:513: error: expected `)' before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:513: error: expected `{' before ‘&’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:513: error: expected primary-expression before ‘)’ token
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:513: error: expected `;' before ‘)’ token
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:52,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qpalette.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qimage.h: At global scope:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qimage.h:349: error: template-id ‘swap’ for ‘void std::swap(QImage&, QImage&)’ does not match any template declaration
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:53,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qpalette.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpixmap.h:300: error: template-id ‘swap’ for ‘void std::swap(QPixmap&, QPixmap&)’ does not match any template declaration
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qpalette.h:47,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:50,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:159: error: template-id ‘swap’ for ‘void std::swap(QBrush&, QBrush&)’ does not match any template declaration
In file included from /usr/local/Cellar/qt/4.8.6/include/QtGui/qwidget.h:58,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qabstractslider.h:45,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/qdial.h:46,
from /usr/local/Cellar/qt/4.8.6/include/QtGui/QDial:1,
from /qsynth-0.3.9/build/src/../../src/qsynthKnob.h:29,
from /qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:9:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qkeysequence.h:219: error: template-id ‘swap’ for ‘void std::swap(QKeySequence&, QKeySequence&)’ does not match any template declaration
/qsynth-0.3.9/build/src/moc_qsynthKnob.cxx: In member function ‘virtual void* qsynthKnob::qt_metacast(const char*)’:
/qsynth-0.3.9/build/src/moc_qsynthKnob.cxx:93: error: ‘strcmp’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QByteArray::Data*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qbytearray.h:164: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QString::Data*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstring.h:101: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QRegExpPrivate*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qregexp.h:83: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In constructor ‘QVector::QVector(int) [with T = QPoint]’:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpolygon.h:99: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:422: error: no matching function for call to ‘operator new(long unsigned int, QPoint*&)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In constructor ‘QVector::QVector(int) [with T = QPointF]’:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpolygon.h:165: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:422: error: no matching function for call to ‘operator new(long unsigned int, QPointF*&)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QRegion::QRegionData*]’:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qregion.h:88: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QImageData*]’:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qimage.h:147: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QKeySequencePrivate*]’:
/usr/local/Cellar/qt/4.8.6/include/QtGui/qkeysequence.h:186: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h: In member function ‘void QList::node_construct(QList::Node*, const T&) [with T = QString]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:512: instantiated from ‘void QList::append(const T&) [with T = QString]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstringlist.h:70: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:373: error: no matching function for call to ‘operator new(long unsigned int, QList::Node*&)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h: In member function ‘void QList::node_copy(QList::Node*, QList::Node*, QList::Node*) [with T = QString]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:828: instantiated from ‘QList& QList::operator+=(const QList&) [with T = QString]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qstringlist.h:88: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:412: error: no matching function for call to ‘operator new(long unsigned int, QList::Node*&)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qlist.h:423: error: ‘memcpy’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QVectorData*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:130: instantiated from ‘void QVector::swap(QVector&) [with T = QPoint]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpolygon.h:70: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QPainterPathPrivate*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qscopedpointer.h:161: instantiated from ‘void QScopedPointer::swap(QScopedPointer&) [with T = QPainterPathPrivate, Cleanup = QPainterPathPrivateDeleter]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpainterpath.h:103: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In member function ‘void QVector::realloc(int, int) [with T = QPoint]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:337: instantiated from ‘void QVector::detach_helper() [with T = QPoint]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:123: instantiated from ‘QVector::QVector(const QVector&) [with T = QPoint]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpolygon.h:66: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:532: error: no matching function for call to ‘operator new(long unsigned int, QPoint*)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:537: error: no matching function for call to ‘operator new(long unsigned int, QPoint*)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In member function ‘void QVector::realloc(int, int) [with T = QPointF]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:337: instantiated from ‘void QVector::detach_helper() [with T = QPointF]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:123: instantiated from ‘QVector::QVector(const QVector&) [with T = QPointF]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpolygon.h:140: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:532: error: no matching function for call to ‘operator new(long unsigned int, QPointF*)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:537: error: no matching function for call to ‘operator new(long unsigned int, QPointF*)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QPixmapData*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qshareddata.h:209: instantiated from ‘void QExplicitlySharedDataPointer::swap(QExplicitlySharedDataPointer&) [with T = QPixmapData]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qshareddata.h:266: instantiated from ‘void qSwap(QExplicitlySharedDataPointer&, QExplicitlySharedDataPointer&) [with T = QPixmapData]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpixmap.h:90: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h: In function ‘void qSwap(T&, T&) [with T = QBrushData*]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qscopedpointer.h:161: instantiated from ‘void QScopedPointer::swap(QScopedPointer&) [with T = QBrushData, Cleanup = QBrushDataPointerDeleter]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qscopedpointer.h:187: instantiated from ‘void qSwap(QScopedPointer&, QScopedPointer&) [with T = QBrushData, Cleanup = QBrushDataPointerDeleter]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qbrush.h:99: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qglobal.h:2189: error: ‘swap’ was not declared in this scope
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h: In member function ‘void QVector::realloc(int, int) [with T = QPainterPath::Element]’:
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:337: instantiated from ‘void QVector::detach_helper() [with T = QPainterPath::Element]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:147: instantiated from ‘void QVector::detach() [with T = QPainterPath::Element]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:247: instantiated from ‘T* QVector::begin() [with T = QPainterPath::Element]’
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:260: instantiated from ‘T& QVector::first() [with T = QPainterPath::Element]’
/usr/local/Cellar/qt/4.8.6/include/QtGui/qpainterpath.h:394: instantiated from here
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:532: error: no matching function for call to ‘operator new(long unsigned int, QPainterPath::Element*)’
:0: note: candidates are: void* operator new(long unsigned int)
/usr/local/Cellar/qt/4.8.6/include/QtCore/qvector.h:537: error: no matching function for call to ‘operator new(long unsigned int, QPainterPath::Element*)’
:0: note: candidates are: void* operator new(long unsigned int)
make[2]: *** [src/CMakeFiles/qsynth.dir/moc_qsynthKnob.cxx.o] Error 1
make[1]: *** [src/CMakeFiles/qsynth.dir/all] Error 2
make: *** [all] Error 2
MacBook:build gunterbischof$ sudo make install

make: *** No rule to make target `install'. Stop.

PS. I think your correct It must require a newer version of QT... even though
I saw this line when I configured the package...
Found Qt4: /usr/local/bin/qmake (found suitable version "4.8.6", minimum required is "4.4.0")

&& the qsynth software requirements are met
The software requirements listed on qsynth website for build and runtime are listed as follows:
Mandatory:
Qt 4 (core, gui), C++ class library and tools for crossplatform development and internationalization
http://qt-project.org/
fluidsynth, real-time software synthesizer based on the SoundFont 2 specifications
http://www.fluidsynth.org/

Ok I'll try and do what you said Earlier about QT5 and see where I get thank you for your patients and time with me.