[CMake] Accepted way to add "-fPIC" onto CMAKE_CXX_FLAGS?

[Jean-Christophe Fillion-Robin]

Hi Michael,

To apply the flag on a specific target, consider looking at:
https://github.com/commontk/Log4Qt/blob/patched/CMakeLists.txt#L116

Hth
Jc

On Mon, Jun 18, 2012 at 8:23 PM, Michael Jackson <
mike.jackson at bluequartz.net> wrote:

> Thanks everyone for the help. I really have a typo in my CMake code so
> thanks for every one for finding that. Basically we build a few libraries
> which other parts of our code depend on. One particular library has to be a
> shared library but links statically to the other libraries in order to
> avoid some STL issues that are on VS 2008 and 2010. I bet these issues are
> not around on GCC with Linux so I bet I need to basically put in a
> safeguard to only build shared libraries on Linux and no-where else but I
> need to test that theory.
>  I like the source files properties idea but I would need to apply that to
> just about every source file in our project. For now an all encompassing
> -fPIC for everything should solve the issue for the moment until a better
> fix in the form of a rewritten API can be put in.
>
> Thanks everyone for helping
> ___________________________________________________________
> Mike Jackson                    Principal Software Engineer
> BlueQuartz Software                            Dayton, Ohio
> mike.jackson at bluequartz.net              www.bluequartz.net
>
> On Jun 18, 2012, at 8:09 PM, Alain Leblanc wrote:
>
> >
> > Starting to dislike the gmail program.
> >
> > So here's a corrected message , to the list this time:
> >
> > =======================================
> >
> > This is how I've been doing for years. Doesn't mean it's the right way :)
> >
> > Here -O3 and -DLINUX don't apply to your case, and ${SRC_FILES} has been
> assigned with the file() command. Using ${UNIX}, but ${LINUX} would work as
> well, maybe.
> >
> > if (${UNIX})
> > set (EXTRA_OPTIONS "-O3  -Wno-deprecated -fPIC -DLINUX")
> > endif (${UNIX})
> > .
> > .
> > .
> > set_source_files_properties(${SRC_FILES}
> >      PROPERTIES
> >      COMPILE_FLAGS  "${EXTRA_OPTIONS}")
> >
> >
> >
> > On 06/18/2012 05:09 PM, Michael Jackson wrote:
> >> Linux really wants to have -fPIC for some of my code and I am trying to
> detect linux and then add this flag for my project but I am having no luck.
> >>
> >> if (LINUX)
> >>      set(CMAKE_CXX_FLAGS ${CMAKE_CSS_FLAGS} "-fPIC")
> >> endif()
> >>
> >> Is this NOT the way I should be doing this? It doesn't really "fell"
> correct but nothing else (including this) seems to work.
> >>
> >> Help?
> >>
> >> Thanks
> >> ___________________________________________________________
> >> Mike Jackson                    Principal Software Engineer
> >> BlueQuartz Software                            Dayton, Ohio
> >> mike.jackson at bluequartz.net              www.bluequartz.net
> >>
> >> --
> >>
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>
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>
> Visit other Kitware open-source projects at
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>
> Please keep messages on-topic and check the CMake FAQ at:
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>
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