CODEWITHSUNDEEP
c++qtcompilation
Jose Ramon
Jose Ramon

Reputation: 5444

Qt .pro file dependencies for compiling a .cpp file

I am running and compiling my c++ code using linux terminal gcc commands. I want to compile and run the code from qt. I am struggling to understand the dependencies I have to convert from console command to qt dependencies in .pro file. Console command for compiling the project is the following:

g++ `pkg-config --cflags opencv` -c -g -MMD -MP -MF main.o.d -o main.o main.cpp
gcc -c -g `pkg-config --cflags opencv` -MMD -MP -MF svmlight/svm_learn.o.d -o svmlight/svm_learn.o svmlight/svm_learn.c
gcc -c -g `pkg-config --cflags opencv` -MMD -MP -MF svmlight/svm_hideo.o.d -o svmlight/svm_hideo.o svmlight/svm_hideo.c
gcc -c -g `pkg-config --cflags opencv` -MMD -MP -MF svmlight/svm_common.o.d -o svmlight/svm_common.o svmlight/svm_common.c
g++ `pkg-config --cflags opencv` -o trainhog main.o svmlight/svm_learn.o svmlight/svm_hideo.o svmlight/svm_common.o `pkg-config --libs opencv`

The created .pro file in qt is the following:

TEMPLATE = app
CONFIG += console
CONFIG -= qt

SOURCES += main.cpp

How can I add those dependencies from console command to qt .pro file? I tried to compile my project with the following *.pro file:

TEMPLATE = app
CONFIG += console
CONFIG -= qt

SOURCES += main.cpp

INCLUDEPATH += /usr/local/include/
INCLUDEPATH += /usr/local/include/opencv
INCLUDEPATH += /usr/local/include/opencv2
INCLUDEPATH += path/svmlight/

LIBS += -L/usr/local/lib
LIBS += -lopencv_core
//I add all necessary opencv libs

However I am getting several undefined references for 'my_malloc' 'verbosity' 'free model'... main.cpp:-1: error: undefined reference to `my_malloc'

  main.o:-1: In function `SVMlight::~SVMlight()':
 (.text._ZN8SVMlightD2Ev[_ZN8SVMlightD5Ev]+0x15):-1: error: undefined reference to `kernel_cache_cleanup'
 (.text._ZN8SVMlightD2Ev[_ZN8SVMlightD5Ev]+0x29):-1: error: undefined reference to `free_model'
 (.text._ZN8SVMlightD2Ev[_ZN8SVMlightD5Ev]+0x4e):-1: error: undefined reference to `free_example'   
 (.text._ZN8SVMlightD0Ev[_ZN8SVMlightD5Ev]+0x15):-1: error: undefined reference to `kernel_cache_cleanup'
 (.text._ZN8SVMlightD0Ev[_ZN8SVMlightD5Ev]+0x29):-1: error: undefined reference to `free_model'
 (.text._ZN8SVMlightD0Ev[_ZN8SVMlightD5Ev]+0x4e):-1: error: undefined reference to `free_example'
 (.text._ZN8SVMlightD0Ev[_ZN8SVMlightD5Ev]+0x4e):-1: error: undefined reference to `free_example'

Upvotes: 0

Views: 413

Answers (1)

Bowdzone
Bowdzone

Reputation: 3854

You can find a list of available commands for *.pro files here.

For your purpose you should look at INCLUDEPATH, LIBS and probably some of the FLAG keywords.

The errors you are getting seem to belong to the svmlight Lib. From what you show from your pro-file you have only included LIBS that belong to opencv, not those of svmlight

Upvotes: 1

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