How to add macro for the LIBS in the .PRO file

ManiRon

I am using two library one for windows and another for Linux. Now i want to define an macro for both of them such that while i run my application in windows i can add Windows Macro and vice versa.
For example: DEFINES += "Windows="LIBS += -L$$PWD/release/ -ldata""
DEFINES += "Linux="LIBS += -L$$PWD/release/ -lLinuxdata""

LIBS += Windows

Like this anything is possible

Cobra91151

Hi! You can add libs like this:

unix {
   LIBS += -L"$$PWD/release/" -lLinuxdata
}

win32 {
   LIBS += -L"$$PWD/release/" -ldata
}

Ratzz

@ManiRon
If you are adding lib via add Library from Qt Creator it gives option for different platforms. something like this.

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/Qwt_Plot/lib/ -lqwt
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/Qwt_Plot/lib/ -lqwtd
else:unix:!macx: LIBS += -L$$PWD/Qwt_Plot/lib/ -lqwt

alt text

Or you can add the code manually in the .pro file

ManiRon

@Ratzz i want to specify macro for this

ManiRon

My point is i want to define macro for the both the library path and use only one by defining that macro to the LIBS +=. so that which ever i have defined in LIBS should be used .

Cobra91151

@ManiRon

Why do you want to create your macro if it already done by Qt?

Code:

unix {
   LIBS += -L"$$PWD/release/" -lLinuxdata
}

win32 {
   LIBS += -L"$$PWD/release/" -ldata
}

unix will be used on Unix systems, it includes the Linux.
win32 will be used on Windows systems.

You can define your macro, for example:

DEFINES += MY_MACRO=true

I can only think that you want something like that:

DEFINES += MY_LIB_PATH="$$PWD/release/"

So you can define the one path to libraries and use it:

unix {
   LIBS += -L"$$MY_LIB_PATH" -lLinuxdata
}

win32 {
   LIBS += -L"$$MY_LIB_PATH" -ldata
}

But you still need unix/win32 checks.

ManiRon

@Cobra91151

For xenomai and fedora what should i define
for example:

for linux : unix, Windows: win32, similarly for Fedora : ?,
and Xenomai : ?

Cobra91151

@ManiRon

For Xenomai and Fedora should work unix and for Windows - win32.

From the Qt documentation:

Platform Scope Values
In addition to the win32, macx, and unix values used in many scope conditions, various other built-in platform and compiler-specific values can be tested with scopes. These are based on platform specifications provided in Qt's mkspecs directory. For example, the following lines from a project file show the current specification in use and test for the linux-g++ specification:

message($$QMAKESPEC)

linux-g++ {
    message(Linux)
}
You can test for any other platform-compiler combination as long as a specification exists for it in the mkspecs directory.

The scope unix is true for the Symbian platform.

Official Qt docs: http://doc.qt.io/archives/qt-4.8/qmake-advanced-usage.html

ManiRon

@Cobra91151 Sir i am trying to add

uinx{
LIBS+= -L$$PWD/.../lib/linus/-lData
LIBS+= -L$$PWD/.../lib/Xenomai/-lData1 -lrtdm -lrt -lxenomai
}

I am adding the linux and xenomai library and trying to compile . but it throws error. As it detects the linux library and it couldnt find the xenomai library it throws error.
My question is i want to define all my library and based on the platform or OS i am running it should detect its particular library.
For example : linux, xenomai, windiows. These are the platforms i am running the application. Why i ask this is because every time i have to add the corresponding library and compile it and the run the application . So is there any solution for this?

Cobra91151

@ManiRon

@ManiRon said in How to add macro for the LIBS in the .PRO file:

@Cobra91151 Sir i am trying to add

uinx{
LIBS+= -L$$PWD/.../lib/linus/-lData
LIBS+= -L$$PWD/.../lib/Xenomai/-lData1 -lrtdm -lrt -lxenomai
}

I am adding the linux and xenomai library and trying to compile . but it throws error. As it detects the linux library and it couldnt find the xenomai library it throws error.
My question is i want to define all my library and based on the platform or OS i am running it should detect its particular library.
For example : linux, xenomai, windiows. These are the platforms i am running the application. Why i ask this is because every time i have to add the corresponding library and compile it and the run the application . So is there any solution for this?

First all of all, you typed uinx, it should be unix, so the errors might be with it. Secondly, Xenomai is built with the Linux kernel, so in your case it will load both libs.

So, you have to be more specific with your checks, read my post above:
In addition to the win32, macx, and unix values used in many scope conditions, various other built-in platform and compiler-specific values...

ManiRon

@Cobra91151

for xenomai what should i do sir?

While giving unix it runs the library for linux and if i want to do the same for xenomai what should i specify?

And i want to know where this message($$QMAKESPEC) will be displayed?

Cobra91151

@ManiRon

Xenomai should have something, I use Windows OS, so I don't know exactly. message($$QMAKESPEC) will be displayed in the General Messages in the Qt Creator. Check the output message($$QMAKESPEC) and reply. I will try to help you.

ManiRon

@Cobra91151 Ok sir

ManiRon

@ManiRon
I tried with windows it returned win32-g++ ?

Cobra91151

@ManiRon said in How to add macro for the LIBS in the .PRO file:

@ManiRon
I tried with windows it returned win32-g++ ?

Ok. So you can use it on Windows, but you have to check it with Xenomai. By the way, win32-g++ means that you use MinGW compiler. Reply when you get the output for Xenomai.

ManiRon

@Cobra91151 ok Sir

ManiRon

@Cobra91151

I have a doubt?

ManiRon

@Cobra91151

i generated a code in .pro file as

win32-g++{
LIBS += path
}
linux-g++ {
LIBS += path
}

i am creating a bundle with the .exe and the required files and if i run this in a PC which does not have QT will it work

Cobra91151

@ManiRon said in How to add macro for the LIBS in the .PRO file:

@Cobra91151

I have a doubt?

@ManiRon said in How to add macro for the LIBS in the .PRO file:

@Cobra91151

i generated a code in .pro file as

win32-g++{
LIBS += path
}
linux-g++ {
LIBS += path
}

i am creating a bundle with the .exe and the required files and if i run this in a PC which does not have QT will it work

You have doubt about what? Is linux-g++ scope condition from Xenomai output?

Also, you have to provide all the necessary Qt libs if the Qt is not static (on the PC which does not have Qt) otherwise it wont work. For example, for Windows, you have to run windeployqt.exe to get Qt shared libs.

Official docs about the deployment for Windows: http://doc.qt.io/qt-5/windows-deployment.html

Cobra91151

@ManiRon

So, you should have something like this in the pro file:

TARGET = TestApp #Your executable filename without the extension

win32-g++ {
    LIBS += path
    QMAKE_POST_LINK = $$(QTDIR)/bin/windeployqt.exe $$shell_quote($$DESTDIR/$$shell_quote($$TARGET).exe) --no-compiler-runtime
}

This will add one more build step to the project, but it will help to deploy all the necessary Qt libs. By the way, it will work only for Windows deployment and shared libs Qt version.

Linux deployment Qt docs here: http://doc.qt.io/qt-5/linux-deployment.html