I am trying to static link OpenCV libraries on Windows. I already built the library with BUILD_SHARED_LIBS OFF and I created a project on the Eclipse (am using MinGW by the way). C:\opencv is set as my source while C:\opencv\build\x86\mingw is set as the destination on the cmake-gui. I then executed mingw32-make and mingw32-make install on C:\opencv\build\x86\mingw.
My question is, how do I static link those libraries on the Eclipse, I tried several ways but my OpenCV application still doesn't work on computers without OpenCV installed.
Here's what I tried so far, I set
C:\opencv\build\x86\mingw\install\include as the include folder;
C:\opencv\build\x86\mingw\lib as the library path on the "Linker" and I have opencv_core246, opencv_highgui246, opencv_objdetect246 and opencv_imgproc246.
This way it seems like it still uses "dynamic linking" so I tried adding -static on the Miscellaneous option but then I got these errors:
C:\opencv\build\x86\mingw\lib\libopencv_imgproc246.a(templmatch.cpp.obj):templmatch.cpp:
(.text$_ZN2cv9crossCorrERKNS_3MatES2_RS0_NS_5Size_IiEEiNS_6Point_IiEEdi+0x1ce5):
undefined reference to `cv::dft(cv::_InputArray const&, cv::_OutputArray const&, int, int)'
C:\opencv\build\x86\mingw\lib\libopencv_imgproc246.a(templmatch.cpp.obj):templmatch.cpp:
(.text$_ZN2cv9crossCorrERKNS_3MatES2_RS0_NS_5Size_IiEEiNS_6Point_IiEEdi+0x1dab):
undefined reference to `cv::mulSpectrums(cv::_InputArray const&, cv::_InputArray const&, cv::_OutputArray const&, int, bool)'
C:\opencv\build\x86\mingw\lib\libopencv_imgproc246.a(templmatch.cpp.obj):templmatch.cpp:
(.text$_ZN2cv9crossCorrERKNS_3MatES2_RS0_NS_5Size_IiEEiNS_6Point_IiEEdi+0x1ded):
undefined reference to `cv::dft(cv::_InputArray const&, cv::_OutputArray const&, int, int)'
collect2: ld returned 1 exit status
Anyone can provide me real step-by-step to static link OpenCV library on Windows using Eclipse and MinGW?
EDIT: I found out that in VS we have to add libraries such as: libtiff.lib libpng.lib libjpeg.lib libjasper.lib IlmImf.lib zlib.lib to the Linker which I did but the problem persists. Then I heard adding Vfw32.Lib comctl32.lib solved the problem but unfortunately I guess they are VS-specific.
Adding 3rd party libraries -llibjasper -llibtiff -lopencv_lapack -lzlib -lpng -ljpeg -lpthread -lrt should solve the issue.
Try compiling a very basic OpenCV code. The order of the libraries that are linked is important while linking static libraries.
If libraryA is depend on libraryB, then libraryA must be defined before defining libraryB.
Related
I use g++-12 and qt6 installed via homebrew.
At linking my executable on macos, I get this error:
Undefined symbols for architecture x86_64:
"__ZN9QMetaType25registerConverterFunctionERKSt8functionIFbPKvPvEES_S_", referenced from:
The function it's not finding is:
QMetaType::registerConverterFunction(std::function<bool (void const*, void*)> const&, QMetaType, QMetaType)
but in the QtCore lib, the closest corresponding function I can find is:
QMetaType::registerConverterFunction(std::__1::function<bool (void const*, void*)> const&, QMetaType, QMetaType)
Notice the ::__1 namespace
I never got into this kind of problem. Any clue where this comes from?
(the codes compile fine on linux and I can even cross compile it on linux for windows via mingw)
I am using Codeblocks 16.01 with OpenCV 3.2.0-vc14 which is installed to C:\opencv
The compile and link search directory is set in CodeBlocks already.
I wrote an openCV example, and there's a conflict as following:
-------------- Build: Debug in try_opencv (compiler: openCL)---------------
mingw32-g++.exe -L"C:\Program Files (x86)\Intel\OpenCL_SDK\6.3\lib\x86" -LC:\opencv\build\x64\vc14\lib -LC:\opencv\build\x64\vc14\bin -o bin\Debug\try_opencv.exe obj\Debug\main.o -lOpenCL C:\opencv\build\x64\vc14\lib\opencv_world320.lib C:\opencv\build\x64\vc14\lib\opencv_world320d.lib
obj\Debug\main.o: In function `main':
D:/TheOpenCLProgrammingBook/image_process_test/try_opencv/main.cpp:9: undefined reference to `cv::imread(cv::String const&, int)'
D:/TheOpenCLProgrammingBook/image_process_test/try_opencv/main.cpp:10: undefined reference to `cv::namedWindow(cv::String const&, int)'
D:/TheOpenCLProgrammingBook/image_process_test/try_opencv/main.cpp:11: undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
D:/TheOpenCLProgrammingBook/image_process_test/try_opencv/main.cpp:12: undefined reference to `cv::waitKey(int)'
obj\Debug\main.o: In function `ZN2cv6StringC1EPKc':
C:/opencv/build/include/opencv2/core/cvstd.hpp:622: undefined reference to `cv::String::allocate(unsigned int)'
obj\Debug\main.o: In function `ZN2cv6StringD1Ev':
C:/opencv/build/include/opencv2/core/cvstd.hpp:664: undefined reference to `cv::String::deallocate()'
obj\Debug\main.o: In function `ZN2cv3MatD1Ev':
C:/opencv/build/include/opencv2/core/mat.inl.hpp:592: undefined reference to `cv::fastFree(void*)'
obj\Debug\main.o: In function `ZN2cv3MataSERKS0_':
C:/opencv/build/include/opencv2/core/mat.inl.hpp:613: undefined reference to `cv::Mat::copySize(cv::Mat const&)'
obj\Debug\main.o: In function `ZN2cv3Mat7releaseEv':
C:/opencv/build/include/opencv2/core/mat.inl.hpp:704: undefined reference to `cv::Mat::deallocate()'
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 0 second(s))
10 error(s), 0 warning(s) (0 minute(s), 0 second(s))
It's so confused. Could someone help me out?
You are attempting to link libraries, e.g.
C:\opencv\build\x64\vc14\lib\opencv_world320.lib
that have been built with the MS Visual Studio 2014 C++ compiler in a program
that you are building with a different C++ compiler, namely mingw32-g++.
That won't work. Libraries built by one C++ compiler are in general
binary incompatible with programs or libraries built with a different
one and in particular, code built with an MS C++ compiler is binary
incompatible with code built by a GCC compiler (which you are using).
In addition, it seems that you are building a 32-bit program
with mingw32-g++ - since the 32-bit TDM GCC compiler is the bundled
default compiler in Code::Blocks 16.01 - and are attempting to link
64-bit libraries with it. Even if the libraries were not made by
an incompatible compiler, you cannot link 64-bit code with 32-bit
code.
All the libraries that you link in your 32[64]-bit program must
have been built with the same compiler or at least a binary ABI compatible
compiler, and they must also be 32[64]-bit.
Start again and build OpenCV from source, for targeting mingw, 32-bit,
using your mingw32 compiler. Get the windows source in the zip archive Source code
from the GitHub OpenCV repo.
It seems as if you may already have built from source. If so, then you
built the libraries for 64-bit VC++14, not mingw32, and those libraries
are useless.
To build the libraries again and configure an OpenCV project in Code::Blocks,
follow this tutorial,
carefully.
I have tried to include Boost in Qt Creator since yesterday. But it doesn't work.
INCLUDEPATH += C:\boost_1_59_0
But how do I that with the ".a" files?
Sorry for my bad english.
Error Message:
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o): duplicate section `.data$_ZZN5boost16cpp_regex_traitsIcE21get_catalog_name_instEvE6s_name[__ZZN5boost16cpp_regex_traitsIcE21get_catalog_name_instEvE6s_name]' has different size
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(regex.o): duplicate section `.rdata$_ZTSN5boost16exception_detail19error_info_injectorISt13runtime_errorEE[__ZTSN5boost16exception_detail19error_info_injectorISt13runtime_errorEE]' has different size
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(regex.o): duplicate section `.rdata$_ZTSN5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE[__ZTSN5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE]' has different size
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(regex.o): duplicate section `.rdata$_ZTVN5boost16exception_detail19error_info_injectorISt13runtime_errorEE[__ZTVN5boost16exception_detail19error_info_injectorISt13runtime_errorEE]' has different size
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(regex.o): duplicate section `.rdata$_ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE[__ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE]' has different size
debug/main.o: In function `ZN5boost9re_detail18basic_regex_parserIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE4failENS_15regex_constants10error_typeEiSsi':
C:/boost_1_59_0/boost/regex/v4/basic_regex_parser.hpp:220: undefined reference to `boost::regex_error::regex_error(std::string const&, boost::regex_constants::error_type, int)'
debug/main.o: In function `ZN5boost9re_detail19basic_regex_creatorIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE16fixup_recursionsEPNS0_14re_syntax_baseE':
C:/boost_1_59_0/boost/regex/v4/basic_regex_creator.hpp:774: undefined reference to `boost::regex_error::regex_error(std::string const&, boost::regex_constants::error_type, int)'
C:/boost_1_59_0/boost/regex/v4/basic_regex_creator.hpp:856: undefined reference to `boost::regex_error::regex_error(std::string const&, boost::regex_constants::error_type, int)'
debug/main.o: In function `ZN5boost9re_detail19basic_regex_creatorIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE16create_startmapsEPNS0_14re_syntax_baseE':
C:/boost_1_59_0/boost/regex/v4/basic_regex_creator.hpp:922: undefined reference to `boost::regex_error::regex_error(std::string const&, boost::regex_constants::error_type, int)'
debug/main.o: In function `ZN5boost9re_detail19basic_regex_creatorIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE15create_startmapEPNS0_14re_syntax_baseEPhPjh':
C:/boost_1_59_0/boost/regex/v4/basic_regex_creator.hpp:1125: undefined reference to `boost::regex_error::regex_error(std::string const&, boost::regex_constants::error_type, int)'
debug/main.o: In function `ZNK5boost9re_detail31cpp_regex_traits_implementationIcE18lookup_collatenameEPKcS4_':
C:/boost_1_59_0/boost/regex/v4/cpp_regex_traits.hpp:679: undefined reference to `boost::re_detail::lookup_default_collate_name(std::string const&)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x30): undefined reference to `__gxx_personality_sj0'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x6c): undefined reference to `_Unwind_SjLj_Register'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x261): undefined reference to `_Unwind_SjLj_Unregister'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x430): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned int&, unsigned int)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x4ec): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned int&, unsigned int)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x5dc): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned int&, unsigned int)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x74e): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned int)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x76d): undefined reference to `std::runtime_error::runtime_error(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x84c): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned int&, unsigned int)'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x8ae): undefined reference to `_Unwind_SjLj_Resume'
C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o):cpp_regex_traits.cpp:(.text+0x937): undefined reference to `_Unwind_SjLj_Resume'
C:/Qt/Qt5.5.0/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: C:/boost_1_59_0/stage/lib/libboost_regex-mgw51-mt-1_59.a(cpp_regex_traits.o): bad reloc address 0x50 in section `.rdata'
collect2.exe: error: ld returned 1 exit status
To link external libraries in Qt project you should provide required linker options. Those options can be added to LIBS variable in the .pro file.
According to Link Your Program to a Boost Library:
Auto-Linking
Most Windows compilers and linkers have so-called “auto-linking
support,” which eliminates the second challenge. Special code in Boost
header files detects your compiler options and uses that information
to encode the name of the correct library into your object files; the
linker selects the library with that name from the directories you've
told it to search.
The GCC toolchains (Cygwin and MinGW) are notable exceptions; GCC
users should refer to the linking instructions for Unix variant OSes
for the appropriate command-line options to use.
For MinGW the library search path is added by -Lpath option and the library name that should be linked by -llibrary, where library is the library name dropping the filename's leading lib and trailing suffix (.a in this case):
LIBS += -L"C:/boost_library_directory" -lname1 -lname2
Update according to new log of error messages
You use two different MinGW compilers:
MinGW 4.9.2 shipped with Qt
external MinGW 5.1.0 to build Boost
There is too large gap between those compilers and your Boost binaries are not compatible with Qt compiler.
I was able to reproduce your error messages using MinGW 5.1.0 for Boost and MinGW 4.8 in my Qt installation.
Build Boost using compiler provided by Qt. Set proper toolchain path for building Boost:
PATH=C:\Qt\Qt5.5.0\Tools\mingw492_32\bin;%PATH%
It should work with proper library versions, for example -lboost_regex-mgw492-mt-1_59.
Note that there are also two types of Boost binaries: release and debug (tagged by -d in file name). According to doc:
Although it's true that sometimes these choices don't affect binary
compatibility with other compiled code, you can't count on that with
Boost libraries.
So, you may want different project options for debug and release builds. In Qt .pro it can be done by testing CONFIG variable:
# set common library path
LIBS += -L"C:/boost_1_59_0/stage/lib"
CONFIG(debug, debug|release) {
# debug libraries
LIBS += -lboost_regex-mgw492-mt-d-1_59
}
CONFIG(release, debug|release) {
# release libraries
LIBS += -lboost_regex-mgw492-mt-1_59
# Release variant of Boost binary libraries is compiled with
# disabled run-time assertion (NDEBUG is defined).
# To align binaries with header-only libraries and other headers
# it is possible to define NDEBUG for project release build.
# It is not defined in Qt by default.
DEFINES += NDEBUG
}
I have a problem linking the wxWidget sample application (http://www.wxwidgets.org/docs/tutorials/hello.htm) with is stored in main.cpp. I try to compile and link it using:
g++ `wx-config --cxxflags --libs` main.cpp
The output I get is the following:
/tmp/ccFHWUaX.o: In function `wxCreateApp()':
main.cpp:(.text+0x31): undefined reference to `wxAppConsole::CheckBuildOptions(char const*, char const*)'
/tmp/ccFHWUaX.o: In function `main':
main.cpp:(.text+0x91): undefined reference to `wxEntry(int&, char**)'
/tmp/ccFHWUaX.o: In function `MyFrame::MyFrame(wxString const&, wxPoint const&, wxSize const&)':
main.cpp:(.text+0x1d2): undefined reference to `wxFrameNameStr'
main.cpp:(.text+0x267): undefined reference to `wxEmptyString'
main.cpp:(.text+0x2ea): undefined reference to `wxEmptyString'
main.cpp:(.text+0x366): undefined reference to `wxMenuBar::wxMenuBar()'
main.cpp:(.text+0x3d1): undefined reference to `wxFrameBase::SetMenuBar(wxMenuBar*)'
main.cpp:(.text+0x3da): undefined reference to `wxStatusLineNameStr'
main.cpp:(.text+0x407): undefined reference to `wxFrame::CreateStatusBar(int, long, int, wxString const&)'
main.cpp:(.text+0x44f): undefined reference to `wxFrameBase::SetStatusText(wxString const&, int)'
main.cpp:(.text+0x533): undefined reference to `wxFrame::~wxFrame()'
(and many lines more...)
WxWidgets-2.8 is installed using the ubuntu repository and its libs are located in /usr/lib/x86_64-linux-gnu. I also tried to build specifying the library path with:
-L/usr/lib/x86_64-linux-gnu/
but, this does not change the output. I was blaming multiarch for my problem, but actually only as I don't know how it works exactly.
Can someone tell me how to build the sample correctly?
Thank you
Michael
When using static linking, the libraries must always come after the object files using the symbols from them, otherwise they're simply ignored by the linker as they're not needed at the moment when it first sees them. So us2012 is correct, you need to put wx-config part after your source file.
You could also use shared wxWidgets libraries, then the order wouldn't matter. But it's still a good habit to use the right order, which works for both static and shared libraries, anyhow.
System Info:
Ubuntu 11.10 (64 bits) with OpenCV 2.3 (installed today)
I'm trying to compile some very simple code in OpenCV 2.3 but I'm getting a weird error.
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
int main(){
cv::Mat image=cv::imread("img.jpg");
cv::namedWindow("My Image");
cv::imshow("My Image",image);
cv::waitKey(0);
return 1;
}
however, I'm getting these error messages...
-SG41:~/Desktop$ g++ `pkg-config opencv --cflags --libs` -o test_1 test_1.cpp
/tmp/ccCvS1ys.o: In function `main':
test_1.cpp:(.text+0x44): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
test_1.cpp:(.text+0x8e): undefined reference to `cv::namedWindow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
test_1.cpp:(.text+0xbc): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
test_1.cpp:(.text+0xf0): undefined reference to `cv::imshow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)'
test_1.cpp:(.text+0x112): undefined reference to `cv::waitKey(int)'
/tmp/ccCvS1ys.o: In function `cv::Mat::~Mat()':
test_1.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x39): undefined reference to `cv::fastFree(void*)'
/tmp/ccCvS1ys.o: In function `cv::Mat::release()':
test_1.cpp:(.text._ZN2cv3Mat7releaseEv[cv::Mat::release()]+0x47): undefined reference to `cv::Mat::deallocate()'
collect2: ld returned 1 exit status
I am guessing that at least some of the libraries in the output of
pkg-config opencv --libs
are archive libraries. It is incorrect to put archive libraries before sources that need them (test_1.cpp in this case): the order of sources and libraries on the link line matters.
Try
g++ -o test_1 test_1.cpp `pkg-config opencv --cflags --libs`
I was having the same problem, but I found out pkg-config opencv --cflags is printing "-I/usr/include/opencv" instead of "-I/usr/include/opencv2"... Maybe a package bug on Ubuntu?
I am using cmake and had similar problems.
Something weird is going on with the cmake configuration files.
For me the problems were solved by simply setting OPENCV_FOUND to TRUE and OpenCV_FOUND to TRUE.
Also I had to set OpenCV_DIR to /usr/local/share/OpenCV.
See also CMake error configuring opencv
#EmployedRussian 's answer worked for me too. For those who are wondering how to specify this command in Eclipse, use this post -
https://www.eclipse.org/forums/index.php?t=msg&goto=233377&
Instead of adding gtk+, use opencv;
Instead of adding the new flags to 'Miscellaneous linker flags', add the new flags at the end after ${INPUT} in -
Project->Right click->Properties->C/C++ Build ->Settings->GCC C++ linker->Expert Settings: command line pattern