Compile on Debian 7 64 bit (errors)

[lexesv1]

Debian 7 64 bit

Mumble 1.2.8

Man http://wiki.mumble.info/wiki/BuildingLinux#Installing_from_source

 

qmake-qt4 QMAKE_CXX=g++-4.6 QMAKE_CC=gcc-4.6 -recursive main.pro CONFIG+=no-client
make

Errors:
g++-4.6 -c -include release/murmurd -m64 -pipe -Wfatal-errors -fvisibility=hidden -Wshadow -Woverloaded-virtual -Wold-style-cast -Wconversion -Wsign-compare -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DRESTRICT=__restrict__ -D_FORTIFY_SOURCE=2 -DMUMBLE_VERSION_STRING=1.2.8 -DMURMUR -DUSE_DBUS -DUSE_ICE -DUSE_BONJOUR -D_REENTRANT -DQT_NO_DEBUG -DQT_SQL_LIB -DQT_XML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtSql -I/usr/include/qt4 -I/usr/include/qt4/QtDBus -I../../src -I. -I../bonjour -Irelease -I/usr/include/avahi-compat-libdns_sd -o release/ACL.o ../ACL.cpp

g++-4.6.real: internal compiler error: Segmentation fault (program cc1plus)
Please submit a full bug report,

 

If CONFIG+=static

 

qmake-qt4 QMAKE_CXX=g++-4.6 QMAKE_CC=gcc-4.6 -recursive main.pro CONFIG+=no-client CONFIG+=static
Reading /home/mm/src/mumble-1.2.8/src/murmur/murmur.pro

make
Errors:
d src/murmur/ && make -f Makefile 
make[1]: Entering directory `/home/mm/src/mumble-1.2.8/src/murmur'
make -f Makefile.Release
make[2]: Entering directory `/home/mm/src/mumble-1.2.8/src/murmur'
protoc --cpp_out=. -I. -I.. ../Mumble.proto
/opt/Ice-3.3/bin/slice2cpp --checksum -I/opt/Ice-3.3/slice Murmur.ice
make[2]: /opt/Ice-3.3/bin/slice2cpp: Command not found
make[2]: *** [Murmur.cpp] Error 127
make[2]: Leaving directory `/home/mm/src/mumble-1.2.8/src/murmur'
make[1]: *** [release] Error 2
make[1]: Leaving directory `/home/mm/src/mumble-1.2.8/src/murmur'
make: *** [sub-src-murmur-make_default-ordered] Error 2

 

Questions

1. Why is an error "Segmentation fault"?

2. Why use directory /opt/Ice-3.3, If the first install all the packages "....apt-get install... slice2cpp... "?

Thanks.