Including Shared Memory BOOST Libraries in Qt - c++

Question

I installed BOOST 1.57 to allow me to use some new features, so I simply created a directory at /usr/local/boost which contains the root BOOST folders.
I have managed to create the example code shown here and compile it using:
g++ example.cpp -o example -lrt
Here is my .pro file:
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = Ph2_ACF
TEMPLATE = app
CONFIG += c++11 debug
QMAKE_CXXFLAGS += -g -O1 -w -pedantic -fPIC -std=c++11 -lrt `root-config --cflags --evelibs` -Wcpp
LIBS += -L../lib -lPh2_Interface -lPh2_Description -lPh2_System -lPh2_Tools -lPh2_Utils
LIBS += $(LibraryPaths:%=-L%) -uhal `root-config --glibs`
LIBS += -L/usr/lib/ -lqjson
INCLUDEPATH += /usr/include/qjson/
INCLUDEPATH += $(ROOTSYS)/include
INCLUDEPATH += /../../Ph2DAQ_dev/
INCLUDEPATH += /usr/local/boost
LIBS += -L/usr/local/boost/libs
And here is my error:
g++ -Wl,-rpath,/usr/local/Trolltech/Qt-4.8.5/lib -o Ph2_ACF main.o mainview.o startup.o setuptab.o setuptabviewmanager.o settings.o systemcontroller.o cbcregisterstab.o cbcregviewmanager.o provider.o aboutbox.o systemcontrollerworker.o cbcregisters.o mainviewmanager.o cbcregisterworker.o tbrowsertab.o calibrate.o hybridtest.o hybridtestworker.o hybridtestviewmanager.o hybridtesttab.o moc_mainview.o moc_startup.o moc_setuptab.o moc_setuptabviewmanager.o moc_settings.o moc_systemcontroller.o moc_cbcregisterstab.o moc_cbcregviewmanager.o moc_aboutbox.o moc_systemcontrollerworker.o moc_cbcregisters.o moc_mainviewmanager.o moc_cbcregisterworker.o moc_tbrowsertab.o moc_calibrate.o moc_hybridtest.o moc_hybridtestworker.o moc_hybridtestviewmanager.o moc_hybridtesttab.o qrc_Resources.o -L/usr/local/Trolltech/Qt-4.8.5/lib -L/usr/include/boost -lboost_system -lboost_thread -lboost_regex -L../lib -lPh2_Interface -lPh2_Description -lPh2_System -lPh2_Tools -lPh2_Utils -L/opt/cactus/lib -lcactus_extern_pugixml -lcactus_uhal_log -lcactus_uhal_grammars -lcactus_uhal_uhal -uhal `root-config --glibs` -L/usr/lib/ -lqjson -L/usr/local/boost/libs -lQtGui -L/usr/local/Trolltech/Qt-4.8.5/lib -L/usr/X11R6/lib -lQtCore -lpthread
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libdl.so when searching for -ldl
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libdl.a when searching for -ldl
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libpthread.so when searching for -lpthread
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libpthread.a when searching for -lpthread
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libm.so when searching for -lm
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libm.a when searching for -lm
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libpthread.so when searching for -lpthread
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libpthread.a when searching for -lpthread
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libc.so when searching for -lc
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: skipping incompatible /usr/lib//libc.a when searching for -lc
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: hybridtestworker.o: undefined reference to symbol 'shm_open##GLIBC_2.2.5'
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: note: 'shm_open##GLIBC_2.2.5' is defined in DSO /lib64/librt.so.1 so try adding it to the linker command line
/lib64/librt.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make: *** [Ph2_ACF] Error 1
Just to note all the previous skipping warnings were fine before, it's just this final 'shm_open##GLIBC_2.2.5' which seems to break it.
All I've added is:
#include <boost/interprocess/shared_memory_object.hpp>
// SNIP !
using namespace boost::interprocess;
// SNIP !
shared_memory_object shm_obj
(
create_only //only create
,"shared_memory" //name
,read_write //read-write mode
);
Into one of my files.
Any idea what is going on?
EDIT:
Adding:
LIBS += -L/usr/local/boost/libs -lrt
Gives me the new error:
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: mainview.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv'
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: note: '_ZN5boost6system15system_categoryEv' is defined in DSO /opt/cactus/lib/libboost_system.so.1.48.0 so try adding it to the linker command line
/opt/cactus/lib/libboost_system.so.1.48.0: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make: *** [Ph2_ACF] Error 1

Answer 1

It looks like you added -lrt to the compile flags, and they're not being included at the link stage.
Try adding -lrt -lboost_system to the LIBS variable (like -lPh2_Description and the rest)