How to add include path in Qt Creator?

I have a project I'm working on in Qt creator that requires a third-party library. I want to add the headers to the include path for the project. How do I do this?

If you are using qmake, the standard Qt build system, just add a line to the .pro file as documented in the qmake Variable Reference:

INCLUDEPATH += <your path>

If you are using your own build system, you create a project by selecting "Import of Makefile-based project". This will create some files in your project directory including a file named <your project name>.includes. In that file, simply list the paths you want to include, one per line. Really all this does is tell Qt Creator where to look for files to index for auto completion. Your own build system will have to handle the include paths in its own way.

As explained in the Qt Creator Manual, <your path> must be an absolute path, but you can avoid OS-, host- or user-specific entries in your .pro file by using $$PWD which refers to the folder that contains your .pro file, e.g.

INCLUDEPATH += $$PWD/code/include

Adding Libraries to Projects, For your own libraries and 3rd party libraries, you need to specify the paths. Qt Creator tries to guess the include path for an external library, but you need to� I am using Qt Creator, Recently I am using a webcam and openCV, it works well. Now, it will add a depth camera. After installing the SDK, I want to add it on the .pro file.. But I could not use the new class from the depth camera. Please help. This is the previous .pro: @: FORMS += dialogapplication.ui dialogsetup.ui. INCLUDEPATH += C:\opencv2

To add global include path use custom command for qmake in Projects/Build/Build Steps section in "Additional arguments" like this: "QT+=your_qt_modules" "DEFINES+=your_defines"

I think that you can use any command from *.pro files in that way.

How to correctly add include path?, Hi I am using Qt Creator, Recently I am using a webcam and openCV, it works well. Now, it will add a depth camera. After installing the SDK,� Just double-click on "your project name".pro in the Projects window and add the include path at the bottom of the.pro file like I've done. If you are using qmake, the standard Qt build system, just add a line to the.profile as documented in the qmake Variable Reference: INCLUDEPATH += <your path>

For anyone completely new to Qt Creator like me, you can modify your project's .pro file from within Qt Creator:

Just double-click on "your project name".pro in the Projects window and add the include path at the bottom of the .pro file like I've done.

How to add include directory to Qt project – Code Yarns , The method to add an include directory to a Qt project depends on how the then add this line to it: If you have Qt Creator open with the project, you can If the project has a .includes file, then just add the path directly to it:� As simple as it sounds, most of the time it’s a hassle to add the required libraries to your Qt projects. You have to add the include path, the libraries and if you are aiming to have a cross-platform project, you need to account for Windows, macOS and Linux operating systems separately. Well, there are … Continue reading "Adding External Libraries to Qt Projects"

If you use custom Makefiles, you can double click on the .includes file and add it there.

How to add include path in Qt Creator? - path - php, I have a project I'm working on in Qt creator that requires a third-party library. I want to add the headers to the include path for the project. How do I do this? Qt Creator automatically adds the include path for an internal library. For all libraries, select the target platforms for the application, library, or plugin. Specify whether the library is statically or dynamically linked. For a statically linked internal library, Qt Creator adds dependencies (PRE_TARGETDEPS) in the project file.

how can add include headers and libs in qtcreator?, Hello all im trying to find the option to add another path to headers files i like to add to my compilation but i can't find the option in qtcreator can� The proper way to do this is like this: LIBS += -L/path/to -lpsapi This way it will work on all platforms supported by Qt. The idea is that you have to separate the directory from the library name (without the extension and without any 'lib' prefix).

[PDF] Getting started with Qt, provides a compiler for Qt creator. 2. Install Qt. Using Qt's editor and compiler include msvc_2012_opengl folder if you wish to use Visual Studio 2012. 2. Add environment variable for QTDIR as the path to your msvc_201x_opengl folder. Select Tools > Options > Kits > Compilers > Add > Custom > C or C++. In the Name field, enter a name for the compiler. In the Compiler path field, enter the path to the directory where the compiler is located. In the Make path field, enter the path to the directory where the make tool is located.

Support for Generic Projects in Qt Creator, Since Qt Creator 1.1, generic projects are supported in addition to qmake projects. belong to your project and which include directories/defines you want to pass to your compiler. To add or remove files later, edit the .files file in Qt Creator.

Comments
  • Okay. This will work for me just fine. Is there a global setting for include paths?
  • Not that I know of, but that doesn't mean there isn't. I don't see anything in the options that looks like that.
  • Never mind. Your answer mentions INCLUDE_PATH but you meant INCLUDEPATH. I'll fix your answer :)
  • It is better to use the QMAKE_CXXFLAGS variables instead, because the INCLUDEPATH is buggy(at least at present moment -- QT5). I.e. when I included INCLUDEPATH += ../../../, the QT just randomly chosen directory in this path, and the compiler got the option -I../../../GUI.
  • @Hi-Angel: It seems the INCLUDEPATH specified is relative to the build directory, not relative to the directory with the .pro as one might easily assume. As shown in my edit to the answer, you can use `$$PWD' to get a clearly defined folder to start the include path with.
  • Using absolute file paths is a very bad idea. Always try to use relative file path system. QT is designed for being cross platform. And if you compile same code on a Linux machine, the compiler will fail to find those file names like C:\ Moreover, even if you rename the source folder or move it somewhere else on your own computer, it will still fail, and you will have to edit the .pro file everytime