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The gcc options -I and -L do not seem to work

I am trying to compile a project on my system using qmake. Some project dependencies are not installed, but are in my home directory, something like this: libs: files /home/myusername/local/lib, and my includes the directory /home/myusername/local/include. Inside the include directory, I have a folder qjsonwith the necessary headers from the library. In the lib folder I have files libqjson.so libqjson.so.0 libqjson.so.0.7.1.

My qmake project project looks something like this:

linux-g++ {
INCLUDEPATH += /home/myusername/local/include/
LIBS += -L/home/myusername/local/lib/ -lqjson
}

and the generated makefile will create commands like this:

g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB \
    -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../qbuzz \
    -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui \
    -I/usr/include/qt4 -I/home/myusername/local/include/ -I. -I. -I../myproject -I. \
    -o qbuzz-result.o ../myproject/myfile.cc

It is clear that the my include directory is in the -Igcc option . myfile.cccontains include, like this one:

#include <qjson/parser.h>

However, after running make, I get an error message:

../myproject/myfile.cc:2:26: fatal error: qjson/parser.h: No such file or directory
compilation terminated.

, CPLUS_INCLUDE_PATH, include, , :

/usr/bin/ld: cannot find -lqjson
collect2: ld returned 1 exit status

, :

g++ -omyprogram main.o mainwindow.o myfile.o moc_mainwindow.o -L/usr/lib \
    -L/home/myusername/local/lib/ -lqjson -lQtGui -lQtNetwork -lQtCore -lpthread

LIBRARY_PATH. , , , -L -I?

Windows MinGW g++.

+5
2

, QT , , . ?

linux-g++ {
 INCLUDEPATH += /home/myusername/local/include
 LIBS += -L/home/myusername/local/lib -lqjson
}
+1

g++ (.. as, ld ..) , . - strace -o output.txt -eopen -s 1024 -f qmake. qmake open qmake, . , ( ). stdio.h:

26069 open("/usr/lib/gcc/x86_64-redhat-linux/4.6.0/include/stdio.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
26069 open("/usr/local/include/stdio.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
26069 open("/usr/include/stdio.h", O_RDONLY|O_NOCTTY) = 4
+1

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