How can I open openexr image on qt widget

Nathan Miguel

I wanted to know how I can open images in openexr format in qt, I got to do this with png, gif and etc, which are compatible with pixelmap

mrjj

Hi
https://api.kde.org/frameworks/kimageformats/html/index.html
Supports OpenEXR but as far as i know Qt does not naively support it.

Nathan Miguel

@mrjj Thanks for the help, but you have some idea how to install this or use pq my cmake is giving error and decompression in the dependency list here

mrjj

@Nathan-Miguel
Hi
https://community.kde.org/Guidelines_and_HOWTOs/Build_from_source/Details#kimageformats

If you list the excact errors, im hopefull that someone can guess what is missing.

You might need to install openEXR first so plugin can find it.

Nathan Miguel

@mrjj I used msvs 15, 17 win 64

0_1544445819960_02f9bf27-618c-4e5c-b4c1-d021640d8d8c-image.png

The C compiler identification is MSVC 19.16.27024.1
The CXX compiler identification is MSVC 19.16.27024.1
Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Detecting C compile features
Detecting C compile features - done
Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
Detecting CXX compile features
Detecting CXX compile features - done
Could NOT find ECM (missing: ECM_DIR)

ECM (required version >= 5.53.0), Extra CMake Modules., https://projects.kde.org/projects/kdesupport/extra-cmake-modules

CMake Error at C:/Program Files/CMake/share/cmake-3.13/Modules/FeatureSummary.cmake:459 (message):
feature_summary() Error: REQUIRED package(s) are missing, aborting CMake
run.
Call Stack (most recent call first):
CMakeLists.txt:8 (feature_summary)

Configuring incomplete, errors occurred!
See also "C:/Git/kimageformats/build/CMakeFiles/CMakeOutput.log".

mrjj

@Nathan-Miguel said in How can I open openexr image on qt widget:

Extra CMake Modules., https://projects.kde.org/projects/kdesupport/extra-cmake-modules

It seems to want these also. But im not sure.
something like

git clone git://anongit.kde.org/extra-cmake-modules
cd extra-cmake-modules
mkdir build && cd build    
cmake ..
make && sudo make install

but hold the horse a moment. Im only guessing so give it
a few hours in case someone knows exactly if thats correct.

Update:
yep, should do it.

VRonin

KDE requires their extra CMake modules. You can install them as any other KDE module

For a guide on how to compile and use the libraries see https://forum.qt.io/post/377923

Nathan Miguel

@mrjj Sorry for the delay, but has some way to do this "make" on windows, because this seems to be compilavel so for linux

Nathan Miguel

@VRonin @mrjj It worked out right here but now I'm with error in the qt files

The C compiler identification is MSVC 19.16.27024.1
The CXX compiler identification is MSVC 19.16.27024.1
Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Detecting C compile features
Detecting C compile features - done
Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
Detecting CXX compile features
Detecting CXX compile features - done

No qmake Qt5 binary found. Can't check QT_INSTALL_PREFIX
Looking for GLIBC
Looking for GLIBC - not found
Could not set up the appstream test. appstreamcli is missing.
CMake Error at CMakeLists.txt:21 (find_package):
Could not find a package configuration file provided by "Qt5Gui" (requested
version 5.9.0) with any of the following names:

Qt5GuiConfig.cmake
qt5gui-config.cmake

Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set
"Qt5Gui_DIR" to a directory containing one of the above files. If "Qt5Gui"
provides a separate development package or SDK, be sure it has been
installed.

Configuring incomplete, errors occurred!
See also "C:/Git/kimageformats/build/CMakeFiles/CMakeOutput.log".
See also "C:/Git/kimageformats/build/CMakeFiles/CMakeError.log".

jsulm

@Nathan-Miguel I guess you need to use MinGW

Nathan Miguel

@jsulm I used mingw but it gave an eros too.

The C compiler identification is unknown
The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:3 (project):
The CMAKE_C_COMPILER:

cl

is not a full path and was not found in the PATH.

To use the NMake generator with Visual C++, cmake must be run from a shell
that can use the compiler cl from the command line. This environment is
unable to invoke the cl compiler. To fix this problem, run cmake from the
Visual Studio Command Prompt (vcvarsall.bat).

Tell CMake where to find the compiler by setting either the environment
variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
the compiler, or to the compiler name if it is in the PATH.

CMake Error at CMakeLists.txt:3 (project):
The CMAKE_CXX_COMPILER:

cl

is not a full path and was not found in the PATH.

To use the NMake generator with Visual C++, cmake must be run from a shell
that can use the compiler cl from the command line. This environment is
unable to invoke the cl compiler. To fix this problem, run cmake from the
Visual Studio Command Prompt (vcvarsall.bat).

Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.

Configuring incomplete, errors occurred!
See also "C:/Git/kimageformats/build/CMakeFiles/CMakeOutput.log".
See also "C:/Git/kimageformats/build/CMakeFiles/CMakeError.log".

Nathan Miguel

@jsulm @mrjj @VRonin is almost, I just need to find this folder that is highlighted and know how to include openexr libraries

0_1544455619120_be69ec44-c472-4c01-8856-6506abcb4921-image.png

Could not set up the appstream test. appstreamcli is missing.
CMake Warning at CMakeLists.txt:23 (find_package):
By not providing "FindKF5Archive.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"KF5Archive", but CMake did not find one.

Could not find a package configuration file provided by "KF5Archive" with
any of the following names:

KF5ArchiveConfig.cmake
kf5archive-config.cmake

Add the installation prefix of "KF5Archive" to CMAKE_PREFIX_PATH or set
"KF5Archive_DIR" to a directory containing one of the above files. If
"KF5Archive" provides a separate development package or SDK, be sure it has
been installed.

Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
Could NOT find OpenEXR (missing: OpenEXR_ILMIMF_LIBRARY OpenEXR_HALF_LIBRARY OpenEXR_IEX_LIBRARY OpenEXR_IMATH_LIBRARY OpenEXR_ILMTHREAD_LIBRARY OpenEXR_INCLUDE_DIR)
The following REQUIRED packages have been found:

ECM (required version >= 5.53.0), Extra CMake Modules., https://projects.kde.org/projects/kdesupport/extra-cmake-modules
Qt5Gui (required version >= 5.9.0)

-- The following OPTIONAL packages have not been found:

KF5Archive
Required for the QImage plugin for Krita and OpenRaster images
PkgConfig
OpenEXR, A library for handling OpenEXR high dynamic-range image files, http://www.openexr.com/
Required for the QImage plugin for OpenEXR images

Configuring done
Generating done

SGaist

Did you get OpenEXR first ?

VRonin

It worked out right here but now I'm with error in the qt files
No qmake Qt5 binary found. Can't check QT_INSTALL_PREFIX

You need to run qtenv2.bat as explained in the link I posted

but has some way to do this "make" on windows

Once you selected the right generator just call cmake --build . (don't forget the dot at the end) and CMake will automatically call the correct build tool

Could not find a package configuration file provided by "KF5Archive" with

weird, KArchive is not listed as a dependency for KImageFormats. In any case it's a Tier1 Module of KDE

The following OPTIONAL packages have not been found:

KF5Archive

so it's just optional, cool.

P.S.
In my experience CMake GUI messed up my config more than it helped me build projects, I find it easier just doing it via the terminal

Nathan Miguel

@SGaist Well I'm finishing compiling the remaining dependencies, but the only thing that gave me error was to install the fade pro python library "https://stefanseefeld.github.io/faber" I performed all the right steps but the system can not find directory or error on line 139

SGaist

Can you give more details about what you did and what failed ?

Nathan Miguel

@SGaist

CMAKE TERMINAL:

PS C:\Git\openexr\build> cmake --build .
[  0%] Built target eLut
[  1%] Built target toFloat
[  1%] Built target Half
[  2%] Built target Half_static
[  2%] Built target Iex
[  3%] Built target Iex_static
[  4%] Building CXX object IlmBase/IexMath/CMakeFiles/IexMath.dir/IexMathFloatExc.cpp.obj
In file included from C:/Git/openexr/IlmBase/Iex/IexMathExc.h:40:0,
                 from C:/Git/openexr/IlmBase/IexMath/IexMathFloatExc.h:58,
                 from C:\Git\openexr\IlmBase\IexMath\IexMathFloatExc.cpp:43:
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:149:29: error: function 'Iex_2_3::ArgExc::ArgExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ArgExc, BaseExc)    // Invalid arguments to a function call
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:149:29: error: function 'Iex_2_3::ArgExc::ArgExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ArgExc, BaseExc)    // Invalid arguments to a function call
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:149:29: error: function 'Iex_2_3::ArgExc::ArgExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ArgExc, BaseExc)    // Invalid arguments to a function call
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:149:29: error: function 'Iex_2_3::ArgExc::ArgExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ArgExc, BaseExc)    // Invalid arguments to a function call
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::ArgExc::~ArgExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:149:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, ArgExc, BaseExc)    // Invalid arguments to a function call
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:151:29: error: function 'Iex_2_3::LogicExc::LogicExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, LogicExc, BaseExc)  // General error in a program's logic,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:151:29: error: function 'Iex_2_3::LogicExc::LogicExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, LogicExc, BaseExc)  // General error in a program's logic,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:151:29: error: function 'Iex_2_3::LogicExc::LogicExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, LogicExc, BaseExc)  // General error in a program's logic,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:151:29: error: function 'Iex_2_3::LogicExc::LogicExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, LogicExc, BaseExc)  // General error in a program's logic,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::LogicExc::~LogicExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:151:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, LogicExc, BaseExc)  // General error in a program's logic,
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:156:29: error: function 'Iex_2_3::InputExc::InputExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, InputExc, BaseExc)  // Invalid input data, e.g. from a file
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:156:29: error: function 'Iex_2_3::InputExc::InputExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, InputExc, BaseExc)  // Invalid input data, e.g. from a file
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:156:29: error: function 'Iex_2_3::InputExc::InputExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, InputExc, BaseExc)  // Invalid input data, e.g. from a file
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:156:29: error: function 'Iex_2_3::InputExc::InputExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, InputExc, BaseExc)  // Invalid input data, e.g. from a file
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::InputExc::~InputExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:156:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, InputExc, BaseExc)  // Invalid input data, e.g. from a file
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:158:29: error: function 'Iex_2_3::IoExc::IoExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, IoExc, BaseExc)     // Input or output operation failed
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:158:29: error: function 'Iex_2_3::IoExc::IoExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, IoExc, BaseExc)     // Input or output operation failed
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:158:29: error: function 'Iex_2_3::IoExc::IoExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, IoExc, BaseExc)     // Input or output operation failed
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:158:29: error: function 'Iex_2_3::IoExc::IoExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, IoExc, BaseExc)     // Input or output operation failed
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::IoExc::~IoExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:158:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, IoExc, BaseExc)     // Input or output operation failed
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:160:29: error: function 'Iex_2_3::MathExc::MathExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, MathExc, BaseExc)  // Arithmetic exception; more specific
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:160:29: error: function 'Iex_2_3::MathExc::MathExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, MathExc, BaseExc)  // Arithmetic exception; more specific
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:160:29: error: function 'Iex_2_3::MathExc::MathExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, MathExc, BaseExc)  // Arithmetic exception; more specific
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:160:29: error: function 'Iex_2_3::MathExc::MathExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, MathExc, BaseExc)  // Arithmetic exception; more specific
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::MathExc::~MathExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:160:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, MathExc, BaseExc)  // Arithmetic exception; more specific
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:164:29: error: function 'Iex_2_3::ErrnoExc::ErrnoExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ErrnoExc, BaseExc)  // Base class for exceptions corresponding
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:164:29: error: function 'Iex_2_3::ErrnoExc::ErrnoExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ErrnoExc, BaseExc)  // Base class for exceptions corresponding
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:164:29: error: function 'Iex_2_3::ErrnoExc::ErrnoExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ErrnoExc, BaseExc)  // Base class for exceptions corresponding
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:164:29: error: function 'Iex_2_3::ErrnoExc::ErrnoExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, ErrnoExc, BaseExc)  // Base class for exceptions corresponding
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::ErrnoExc::~ErrnoExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:164:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, ErrnoExc, BaseExc)  // Base class for exceptions corresponding
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:169:29: error: function 'Iex_2_3::NoImplExc::NoImplExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NoImplExc, BaseExc) // Missing method exception e.g. from a
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:169:29: error: function 'Iex_2_3::NoImplExc::NoImplExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NoImplExc, BaseExc) // Missing method exception e.g. from a
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:169:29: error: function 'Iex_2_3::NoImplExc::NoImplExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NoImplExc, BaseExc) // Missing method exception e.g. from a
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:169:29: error: function 'Iex_2_3::NoImplExc::NoImplExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NoImplExc, BaseExc) // Missing method exception e.g. from a
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::NoImplExc::~NoImplExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:169:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, NoImplExc, BaseExc) // Missing method exception e.g. from a
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:175:29: error: function 'Iex_2_3::NullExc::NullExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NullExc, BaseExc)   // A pointer is inappropriately null.
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:175:29: error: function 'Iex_2_3::NullExc::NullExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NullExc, BaseExc)   // A pointer is inappropriately null.
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:175:29: error: function 'Iex_2_3::NullExc::NullExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NullExc, BaseExc)   // A pointer is inappropriately null.
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:175:29: error: function 'Iex_2_3::NullExc::NullExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, NullExc, BaseExc)   // A pointer is inappropriately null.
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::NullExc::~NullExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:175:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, NullExc, BaseExc)   // A pointer is inappropriately null.
 ^~~~~~~~~~~~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:177:29: error: function 'Iex_2_3::TypeExc::TypeExc()' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, TypeExc, BaseExc)   // An object is an inappropriate type,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:135:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name()                         throw(): base (0)    {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:177:29: error: function 'Iex_2_3::TypeExc::TypeExc(const char*)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, TypeExc, BaseExc)   // An object is an inappropriate type,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:136:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const char* text)        throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:177:29: error: function 'Iex_2_3::TypeExc::TypeExc(const string&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, TypeExc, BaseExc)   // An object is an inappropriate type,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:137:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (const std::string &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:177:29: error: function 'Iex_2_3::TypeExc::TypeExc(std::stringstream&)' definition is marked dllimport
 DEFINE_EXC_EXP (IEX_EXPORT, TypeExc, BaseExc)   // An object is an inappropriate type,
                             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:138:13: note: in definition of macro 'DEFINE_EXC_EXP'
         exp name (std::stringstream &text) throw(): base (text) {}  \
             ^~~~
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:139:13: error: function 'Iex_2_3::TypeExc::~TypeExc()' definition is marked dllimport
         exp ~name() throw() { }                                     \
             ^
C:/Git/openexr/IlmBase/Iex/IexBaseExc.h:177:1: note: in expansion of macro 'DEFINE_EXC_EXP'
 DEFINE_EXC_EXP (IEX_EXPORT, TypeExc, BaseExc)   // An object is an inappropriate type,
 ^~~~~~~~~~~~~~
IlmBase\IexMath\CMakeFiles\IexMath.dir\build.make:62: recipe for target 'IlmBase/IexMath/CMakeFiles/IexMath.dir/IexMathFloatExc.cpp.obj' failed
mingw32-make.exe[2]: *** [IlmBase/IexMath/CMakeFiles/IexMath.dir/IexMathFloatExc.cpp.obj] Error 1
CMakeFiles\Makefile2:1294: recipe for target 'IlmBase/IexMath/CMakeFiles/IexMath.dir/all' failed
mingw32-make.exe[1]: *** [IlmBase/IexMath/CMakeFiles/IexMath.dir/all] Error 2
Makefile:161: recipe for target 'all' failed
mingw32-make.exe: *** [all] Error 2

CMAKE GUI 

CMake Warning at CMakeLists.txt:143 (message):
  Viewers are currently out of order.  Building anyway


Found OpenGL: opengl32   
Could NOT find FLTK (missing: FLTK_LIBRARIES FLTK_INCLUDE_DIR) 
CMake Warning at CMakeLists.txt:147 (message):
  FLTK not found, exrdisplay will not be built


ILMBASE_PACKAGE_PREFIX = C:/Program Files (x86)/OpenEXR
INFO,Skipping Python bindings
INFO,Skipping OpenEXR Viewers
Configuring done
Generating done

Nathan Miguel

@SGaist I also try to compile without selecting these options python lib and openexr viewer as well as in the image. python was because I could not install the "Faber" and the viewer was because I could not install the fltk tbm

0_1544561882581_b9d74928-2620-44ed-adbe-646b3994041a-image.png

Nathan Miguel

@SGaist If you have a problem with linux on linux, I would like to install linux on linux, because it is horrible to program on windows in C ++ on my opinion

SGaist

@Nathan-Miguel said in How can I open openexr image on qt widget:

@SGaist If you have a problem with linux on linux, I would like to install linux on linux, because it is horrible to program on windows in C ++ on my opinion

Install Linux on Linux ? What do you mean by that ?

In any case, you don't really need the viewer since you want to use Qt to show the images.

Nathan Miguel

@SGaist sorry for my keyboard and brazil, sometimes it fixes the errors alone, but what I wanted to say and if it would be easier to program this in linux and if you have how to compile windows files direct in linux. But continuing, where I can find this "FLTK_GL_LIBRARY", and about python it seems that cmake is using 2.7 and not the 3.7 to install the python boost.

CMake Warning at CMakeLists.txt: 143 (message):
   Viewers are currently out of order. Building anyway


ILMBASE_PACKAGE_PREFIX = C: / Program Files (x86) / OpenEXR
INFO, Skipping Python bindings
OPENEXR_PACKAGE_PREFIX =
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please make them or make sure they are set and tested correctly in the CMake files:
FLTK_GL_LIBRARY
     linked by target "exrdisplay" in directory C: / Git / openexr / OpenEXR_Viewers / exrdisplay

Configuring incomplete, errors occurred!
See also "C: /Git/openexr/build/CMakeFiles/CMakeOutput.log".

Nathan Miguel

@SGaist I've been able to compile all but that's missing so I can finish compiling Kimageformat, "https://api.kde.org/frameworks/karchive/html/index.html"

Could not set up the appstream test. appstreamcli is missing.
Could NOT find BZip2 (missing: BZIP2_LIBRARIES BZIP2_INCLUDE_DIR)
Could NOT find LibLZMA (missing: LIBLZMA_INCLUDE_DIR LIBLZMA_LIBRARY LIBLZMA_HAS_AUTO_DECODER LIBLZMA_HAS_EASY_ENCODER LIBLZMA_HAS_LZMA_PRESET)
The following OPTIONAL packages have been found:

* Qt5Network

The following REQUIRED packages have been found:

* ECM (required version> = 5.53.0), Extra CMake Modules., Https://projects.kde.org/projects/kdesupport/extra-cmake-modules
* ZLIB, Support for gzip compressed files and data streams, http://www.zlib.net
Required by the core KDE libraries and some critical kioslaves
* Qt5Core

The following features have been disabled:

* QCH, API documentation in QCH format (for eg Qt Assistant, Qt Creator & KDevelop)

The following OPTIONAL packages have not been found:

* LibLZMA, Support for xz compressed files and data streams, http://tukaani.org/xz/
Support for xz compressed files and data streams

The following RECOMMENDED packages have not been found:

* BZip2, Support for BZip2 compressed files and data streams, https://sourceware.org/bzip2/
Support for BZip2 compressed files and data streams

Configuring done
Generating done

Nathan Miguel

@SGaist Sorry bother, but now I've been able to install everything, thanks to everyone, but how can I include this in my project

VRonin

@Nathan-Miguel said in How can I open openexr image on qt widget:

but how can I include this in my project

http://doc.qt.io/qt-5/third-party-libraries.html
http://doc.qt.io/qtcreator/creator-project-qmake-libraries.html

Nathan Miguel

@VRonin only have a problem, I just see these files for me and what does not accept other formats of includes other than .h, .lib, .a

0_1544644496765_a7f24467-ca07-4d98-8be5-32182a76f268-image.png

0_1544644529928_043c200c-dcdd-4d9e-b2a2-63f0898d01dd-image.png

SGaist

You don't have to link against them. They are plugins that will be loaded at run time.

You may have to add a call to QCoreApplication::addLibraryPath for your application to find them.

Nathan Miguel

@SGaist there is a problem so, cmake is not wanting to include the openexr library in kimageformat, and this makes my program compatible with psd, krikta and others except openexr

0_1544722625396_6bd37dd2-d3a2-4fc1-aa59-81b5575e481e-image.png

Nathan Miguel

@SGaist I was able to make cmake find them but I still have an error compiling openexr's ".lib"

0_1544753199859_97a920a1-a53e-4933-893d-8a771b85212f-image.png

CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `K_IStream::read(char*, int)':
C:/Git/kimageformats/src/imageformats/exr.cpp:61: undefined reference to `Iex_2_3::throwErrnoExc(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `EXRHandler::read(QImage*)':
C:/Git/kimageformats/src/imageformats/exr.cpp:169: undefined reference to `Imf_2_3::globalThreadCount()'
C:/Git/kimageformats/src/imageformats/exr.cpp:169: undefined reference to `Imf_2_3::RgbaInputFile::RgbaInputFile(Imf_2_3::IStream&, int)'
C:/Git/kimageformats/src/imageformats/exr.cpp:170: undefined reference to `Imf_2_3::RgbaInputFile::dataWindow() const'
C:/Git/kimageformats/src/imageformats/exr.cpp:178: undefined reference to `Imf_2_3::RgbaInputFile::setFrameBuffer(Imf_2_3::Rgba*, unsigned long long, unsigned long long)'
C:/Git/kimageformats/src/imageformats/exr.cpp:179: undefined reference to `Imf_2_3::RgbaInputFile::readPixels(int, int)'C:/Git/kimageformats/src/imageformats/exr.cpp:169: undefined reference to `Imf_2_3::RgbaInputFile::~RgbaInputFile()'
C:/Git/kimageformats/src/imageformats/exr.cpp:169: undefined reference to `Imf_2_3::RgbaInputFile::~RgbaInputFile()'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `EXRHandler::canRead(QIODevice*)':
C:/Git/kimageformats/src/imageformats/exr.cpp:212: undefined reference to `Imf_2_3::isImfMagic(char const*)'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `Iex_2_3::InputExc::InputExc(char const*)':
C:/PROGRA~1/OpenEXR/include/OpenEXR/IexBaseExc.h:156: undefined reference to `Iex_2_3::BaseExc::BaseExc(char const*)'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `Iex_2_3::InputExc::~InputExc()':
C:/PROGRA~1/OpenEXR/include/OpenEXR/IexBaseExc.h:156: undefined reference to `Iex_2_3::BaseExc::~BaseExc()'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `K_IStream::K_IStream(QIODevice*, QByteArray const&)':
C:/Git/kimageformats/src/imageformats/exr.cpp:40: undefined reference to `Imf_2_3::IStream::IStream(char const*)'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj):exr.cpp:(.rdata$_ZTV9K_IStream[_ZTV9K_IStream]+0x20): undefined reference to `Imf_2_3::IStream::isMemoryMapped() const'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj):exr.cpp:(.rdata$_ZTV9K_IStream[_ZTV9K_IStream]+0x30): undefined reference to `Imf_2_3::IStream::readMemoryMapped(int)'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj): In function `K_IStream::~K_IStream()':
C:/Git/kimageformats/src/imageformats/exr.cpp:36: undefined reference to `Imf_2_3::IStream::~IStream()'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj):exr.cpp:(.rdata$_ZTVN7Iex_2_38InputExcE[_ZTVN7Iex_2_38InputExcE]+0x20): undefined reference to `Iex_2_3::BaseExc::what() const'
CMakeFiles\kimg_exr.dir/objects.a(exr.cpp.obj):exr.cpp:(.rdata$.refptr._ZN4half8_toFloatE[.refptr._ZN4half8_toFloatE]+0x0): undefined reference to `half::_toFloat'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[2]: *** [src\imageformats\CMakeFiles\kimg_exr.dir\build.make:107: bin/imageformats/kimg_exr.dll] Error 1
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:200: src/imageformats/CMakeFiles/kimg_exr.dir/all] Error 2
mingw32-make.exe: *** [Makefile:140: all] Error 2

SGaist

Can you check in which OpenEXR library you have these symbols ? It's likely the llmlmf library but better double check.

Nathan Miguel

@SGaist strange, because all the libs here are good, until the includes are complete

0_1544875563064_887a0e51-2f6d-478f-a2f8-f155effb02bf-image.png

SGaist

I didn't meant you are missing a library, just wondering which one contains the missing symbols and thus if you are linking against it.

Nathan Miguel

@SGaist The log says that "moc_predefs.h" is giving the library error to generate kimg_exr.dll, more briefly, but what can I do to correct it, I tried to switch between VS and mingw

[ 1%] Automatic MOC for target kimg_exr

AutoMoc subprocess error

The content generation command for "moc_predefs.h" failed.

Command

C:/Qt/Tools/mingw730_64/bin/g++.exe -dM -E -c "C:/Program Files/CMake/share/cmake-3.13/Modules/CMakeCXXCompilerABI.cpp" -IC:/Git/kimageformats/build/src/imageformats -IC:/Git/kimageformats/src/imageformats -IC:/Qt/5.12.0/mingw73_64/include -IC:/Qt/5.12.0/mingw73_64/include/QtGui -IC:/Qt/5.12.0/mingw73_64/include/QtANGLE -IC:/Qt/5.12.0/mingw73_64/include/QtCore -IC:/Qt/5.12.0/mingw73_64/./mkspecs/win32-g++ "-IC:/Program Files/OpenEXR/include/OpenEXR" -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_FROM_BYTEARRAY -DQT_NO_CAST_TO_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_SIGNALS_SLOTS_KEYWORDS -DQT_NO_URL_CAST_FROM_STRING -DQT_USE_QSTRINGBUILDER -DUNICODE -DWIN32_LEAN_AND_MEAN -DWINVER=0x0600 -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D_USE_MATH_DEFINES -D_WIN32_IE=0x0600 -D_WIN32_WINNT=0x0600 -DWIN32

Output

src\imageformats\CMakeFiles\kimg_exr_autogen.dir\build.make:56: recipe for target 'src/imageformats/CMakeFiles/kimg_exr_autogen' failed
mingw32-make.exe[2]: *** [src/imageformats/CMakeFiles/kimg_exr_autogen] Error 1
CMakeFiles\Makefile2:569: recipe for target 'src/imageformats/CMakeFiles/kimg_exr_autogen.dir/all' failed
mingw32-make.exe[1]: *** [src/imageformats/CMakeFiles/kimg_exr_autogen.dir/all] Error 2
Makefile:139: recipe for target 'all' failed
mingw32-make.exe: *** [all] Error 2

SGaist

You can't mix and match C++ libraries built with VS and MinGW, you have to always use the same compiler.

VRonin

I tried to build it myself but I must admit I too struggle with getting openexr to link. I will post my progress below anyway to make it more accessible to other people to try and fix this. The commands should create a zip file containing each dependency and a zip file containing the KDE API libraries but I can't get the final link over the line

The series of commands I used can be replicated to build all the dependencies and the library (as you can see, I built with Qt5.12 on MSVC 2015):

set cmake_path=C:\Program Files\CMake\bin
set 7zip_path=C:\Program Files\7-Zip
set git_path=C:\Program Files\Git\bin
set qt_path=C:\Qt\5.12\msvc2015_64
set curl_path=C:\libcurl\bin
set compiler_path=C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC
set comp_platform=amd64
set use_mingw=false
set originalWD=%CD%
set PATH=%cmake_path%;%git_path%;%curl_path%;%7zip_path%;%PATH%
call "%qt_path%\bin\qtenv2.bat"
cd %originalWD%
echo on
if %use_mingw%==true set PATH=%compiler_path%;%PATH%
if %use_mingw%==false call "%compiler_path%\vcvarsall.bat" %comp_platform%
if %use_mingw%==true (set CMAKEGENERATOR="MinGW Makefiles") else (set CMAKEGENERATOR="NMake Makefiles")
mkdir .\bzip2src && cd .\bzip2src
curl -k -L https://sourceforge.net/projects/gnuwin32/files/bzip2/1.0.5/bzip2-1.0.5-src.zip --output bzip2.zip
7z x bzip2.zip
del /F /Q  bzip2.zip
cd src\bzip2\1.0.5\bzip2-1.0.5\
mkdir build && cd build
echo cmake_minimum_required(VERSION 3.5) >> ..\CMakeLists.txt
echo project(bzip2 C) >> ..\CMakeLists.txt
echo set(bzip2_VERSION 1.0.5) >> ..\CMakeLists.txt
echo set(bzip2_SRCS >> ..\CMakeLists.txt
echo bzlib.c >> ..\CMakeLists.txt
echo blocksort.c >> ..\CMakeLists.txt
echo huffman.c >> ..\CMakeLists.txt
echo crctable.c >> ..\CMakeLists.txt
echo compress.c >> ..\CMakeLists.txt
echo decompress.c >> ..\CMakeLists.txt
echo randtable.c >> ..\CMakeLists.txt
echo ) >> ..\CMakeLists.txt
echo add_library(bzip2 SHARED ${bzip2_SRCS}) >> ..\CMakeLists.txt
echo install(TARGETS bzip2 >> ..\CMakeLists.txt
echo EXPORT bzip2 >> ..\CMakeLists.txt
echo RUNTIME DESTINATION bin COMPONENT library >> ..\CMakeLists.txt
echo LIBRARY DESTINATION lib COMPONENT library >> ..\CMakeLists.txt
echo ARCHIVE DESTINATION lib COMPONENT library >> ..\CMakeLists.txt
echo ) >> ..\CMakeLists.txt
echo install(FILES bzlib.h >> ..\CMakeLists.txt
echo DESTINATION include >> ..\CMakeLists.txt
echo COMPONENT headers >> ..\CMakeLists.txt
echo ) >> ..\CMakeLists.txt
cmake -G %CMAKEGENERATOR% -DCMAKE_INSTALL_PREFIX=../../../../../../bzip2 -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\..\..\..\..\
set PATH=%CD%\bzip2;%PATH%
7z a -tzip bzip2.zip .\bzip2\*
mkdir .\liblzma && cd .\liblzma
curl -k -L https://tukaani.org/xz/xz-5.2.4-windows.zip --output liblzma.zip
7z x liblzma.zip
del /F /Q liblzma.zip
if %use_mingw%==true (ren bin_i686 lib) else (mkdir lib && mkdir bin)
if %use_mingw%==false curl -k -L https://tukaani.org/xz/xz-5.2.4.tar.gz --output liblzma.tar.gz
if %use_mingw%==false 7z x liblzma.tar.gz
if %use_mingw%==false del /F /Q liblzma.tar.gz
if %use_mingw%==false 7z x liblzma.tar
if %use_mingw%==false del /F /Q liblzma.tar
if %use_mingw%==false cd xz-5.2.4\windows\vs2013
if %comp_platform%==x86 if %use_mingw%==false msbuild xz_win.sln /property:Configuration=Release /property:Platform=Win32 && xcopy /Y /I /K Release\Win32\liblzma_dll\*.dll ..\..\..\bin && xcopy /Y /I /K Release\Win32\liblzma_dll\*.lib ..\..\..\lib
if %comp_platform%==amd64 if %use_mingw%==false msbuild xz_win.sln /property:Configuration=Release /property:Platform=x64 && xcopy /Y /I /K Release\x64\liblzma_dll\*.dll ..\..\..\bin && xcopy /Y /I /K Release\x64\liblzma_dll\*.lib ..\..\..\lib
if %use_mingw%==false cd ..\..\..\
set PATH=%CD%;%PATH%
cd ..\
7z a -tzip liblzma.zip .\liblzma\include\
7z a -tzip liblzma.zip .\liblzma\lib\
if %use_mingw%==false 7z a -tzip liblzma.zip .\liblzma\bin\
git clone https://github.com/madler/zlib.git zlibBuild
cd zlibBuild
mkdir .\build && cd .\build
cmake -G %CMAKEGENERATOR% -DCMAKE_INSTALL_PREFIX=../../zlib -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\
7z a -tzip zlib.zip .\zlib\*
set PATH=%CD%\zlib;%PATH%
git clone https://github.com/openexr/openexr.git OpenEXRsrc
cd OpenEXRsrc
mkdir .\build && cd .\build
cmake -G %CMAKEGENERATOR% -DOPENEXR_NAMESPACE_VERSIONING=OFF -DOPENEXR_BUILD_PYTHON_LIBS=OFF -DCMAKE_DEBUG_POSTFIX=d -DOPENEXR_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=../../OpenEXR -DCMAKE_BUILD_TYPE=DEBUG ../
cmake --build .
cmake --build . --target install
cmake -G %CMAKEGENERATOR% -DOPENEXR_NAMESPACE_VERSIONING=OFF -DOPENEXR_BUILD_PYTHON_LIBS=OFF -DOPENEXR_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=../../OpenEXR -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\
7z a -tzip OpenEXR.zip .\OpenEXR\*
set PATH=%CD%\OpenEXR;%PATH%
git clone git://anongit.kde.org/extra-cmake-modules ECM
cd ECM
mkdir .\build && cd .\build
cmake -G %CMAKEGENERATOR% -DBUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=../../ECMbuild -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\
set PATH=%CD%\ECMbuild;%PATH%
git clone git://anongit.kde.org/karchive.git KArchive
cd KArchive
mkdir .\build && cd .\build
cmake -G %CMAKEGENERATOR% -DBUILD_TESTING=OFF -DCMAKE_DEBUG_POSTFIX=d -DCMAKE_INSTALL_PREFIX=../../KDEAPI -DCMAKE_BUILD_TYPE=DEBUG ../
cmake --build .
cmake --build . --target install
cmake -G %CMAKEGENERATOR% -DBUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=../../KDEAPI -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\
set PATH=%CD%\KDEAPI;%PATH%
git clone git://anongit.kde.org/kimageformats.git KImageFormats
cd KImageFormats
mkdir .\build && cd .\build
cmake -G %CMAKEGENERATOR% -DBUILD_TESTING=OFF -DCMAKE_DEBUG_POSTFIX=d -DCMAKE_INSTALL_PREFIX=../../KDEAPI -DCMAKE_BUILD_TYPE=DEBUG ../
cmake --build .
cmake --build . --target install
cmake -G %CMAKEGENERATOR% -DBUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=../../KDEAPI -DCMAKE_BUILD_TYPE=RELEASE ../
cmake --build .
cmake --build . --target install
cd ..\..\
7z a -tzip KDElib.zip .\KDEAPI\*

You'll need to have installed 7-zip, curl, CMake and git.
You'll need to change the initial lines to match your system:

set cmake_path=C:\Program Files\CMake\bin: path to the CMake executable
set 7zip_path=C:\Program Files\7-Zip: path to the 7-zip executable
set git_path=C:\Program Files\Git\bin: path to the git executable
set qt_path=C:\Qt\5.12\msvc2015_64: path to your qt directory
set curl_path=C:\libcurl\bin: path to the curl executable
set compiler_path=C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC: path to the compiler binary folder
set comp_platform=amd64 can be either amd64 or x86 determines if the build is 64 or 32 bit
set use_mingw=false set to true if you use MinGW or false if you use MSVC

One final thing, if you use MinGW you might need to adjust the line if %use_mingw%==true (ren bin_i686 lib) else (mkdir lib && mkdir bin) changing bin_i686 to the name of the folder containing the libraries that match your compiler (there are 3 available)

Nathan Miguel

@SGaist @VRonin you save my lifeeeeeee. but Well I chose to use VS because mingw gave object error, but how can I include it in qt now, you can give a clearer explanation because documentation is confusing

VRonin

@Nathan-Miguel said in How can I open openexr image on qt widget:

but how can I include it in qt

I imagine you mean Qt Creator. Right click on your project -> add library -> external library -> select the .lib file and the include directory (the d suffix should be detected automatically).

Nathan Miguel

@VRonin even the libs was fine, but in question my qt still does not open and I still have some doubts,

Do I need to add the openexr and libs includes?
Can I continue using the QPixelmap label?
In kimageformat did not come any include in .h, do I have to use .desktop or use the openexr includes to open the image?

This is the function I'm using to open an image

void MainWindow::on_actionOpen_Image_triggered()
{
    QString filter = "Imagens (*.bmp *.cur *.gif *icns *.ico *.jpg *.jpeg *.pdm *.pgm *.png *.ppm *.svg *.tga *.tif *.tiff *.wbmp *.webp *.xmb *.xpm) ;; All Files (*.*)";
    QString filename = QFileDialog::getOpenFileName(this, "Open", QDir::homePath(), filter);
    QFile file(filename);
    QImage image(filename);
    if (!image.isNull())
        {
             QImage image(filename);
             image = image.scaledToWidth(ui->labelimg->width(), Qt::SmoothTransformation);
             image = image.scaledToWidth(ui->labelimg->height(), Qt::SmoothTransformation);
             ui->labelimg->setPixmap(QPixmap::fromImage(image));
        }
    else
        {
            QMessageBox::warning(this, "Error", "Image can not open");
            filename = "";
        }

}

SGaist

Where did you install the plugins ?
You can also set the QT_DEBUG_PLUGINS environment variable to 1 in the Run part of the Project panel to see what is happening.

Nathan Miguel

@SGaist The .desktop files are in the files and programs folder, the libs continued in the folder on I compiled, which was in C: / Git / kimageformat / build, and the dll were for the qt compiler itself, msvc2017-64 in the plugin / image folder

One more thing, in this directory "C: \ Qt \ 5.12.0 \ msvc2017_64 \ plugins \ imageformats", I realized that the "tga" format, had tbm support here, and gives the same error when I try to open open exr in the app debug "QImage :: scaleWidth: Image is a null image".

First I used the .dll, .pdb files with this name "kimg_exr", then renamed "qexr", both the dll and the pdb, but it still did not work, nor with the native tga that worked right.

And if it is useful these are my includes

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDesktopServices>
#include <QMessageBox>
#include <QUrl>
#include <QFile>
#include <QFileDialog>
#include <QImage>
#include <QPixmap>
#include <QImageIOPlugin>
#include <QImageIOHandler>

source code: https://github.com/nathanmiguel123/Denoiser-Script

SGaist

Did you call nmake install at some point ?

Important: Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

How can I open openexr image on qt widget

AutoMoc subprocess error

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