cmake does not work

[Devanshu Jain]

Hi Tomaz,
The CXX_COMPILER_FLAGS part of cmakeLists.txt looks like:

********-----------------********

include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
if(COMPILER_SUPPORTS_CXX11)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
elseif(COMPILER_SUPPORTS_CXX0X)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
else()
        message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11
support. Please use a different C++ compiler.")
endif()

*************---------------------************

 How should I add fPIC to this.




On Thu, Jul 10, 2014 at 8:51 PM, Tomaz Canabrava <tcanabrava at kde.org> wrote:

> On Thu, Jul 10, 2014 at 12:17 PM, Devanshu Jain
> <devanshu.jain919 at gmail.com> wrote:
> > I already tried that but I think cmake does not realise -fPIC/fPIE as a
> > valid option. So it considers that a file exists with the same name and
> > shows me the following error:
> > CMake Error: The source directory
> > "/home/devanshu/Documents/PMC/plasma-mediacenter/build/-fPIC" does not
> > exist.
>
> What? no no no,
> You must add -fPIC as the CXX_COMPILER_FLAGS, how's your CMakeLists.txt?
> It seems that you are adding -fPIC at the wrong location.
>
> >
> > On Thu, Jul 10, 2014 at 8:41 PM, Tomaz Canabrava <tcanabrava at kde.org>
> wrote:
> >>
> >> Devanshu,
> >>
> >> I know it's frustrating to begin in a very complex and huge software
> >> as KDE and Plasma, belive me - this happened to me 6 years ago.
> >> It's very important to try to understand the errors that you have
> >> before asking for help, really. Holding hands is cool but not the most
> >> efficient way to learn.
> >>
> >> for instance, in the second one
> >>
> >>  /usr/include/qt5/QtCore/
> >> qglobal.h:1008:4: error: #error "You must build your code with
> >> position independent code if Qt was built with -reduce-relocations. "
> >> "Compile your code with -fPIC or -fPIE."
> >>  #  error "You must build your code with position independent code if
> >> Qt was built with -reduce-relocations. "\
> >>
> >> This means that your Qt was build with -reduce-relocations and you
> >> must compile your code with -fPIC , as the error says.
> >> so, go to your CMake and add -fPIC to the CXX_COMPILER_FLAGS , and try
> >> again. :)
> >>
> >> Tomaz
> >> _______________________________________________
> >> Plasma-devel mailing list
> >> Plasma-devel at kde.org
> >> https://mail.kde.org/mailman/listinfo/plasma-devel
> >
> >
> >
> > _______________________________________________
> > Plasma-devel mailing list
> > Plasma-devel at kde.org
> > https://mail.kde.org/mailman/listinfo/plasma-devel
> >
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