[CMake] osx 10.6 10.5 compability issue

[Yngve Levinsen]

So I tried, and noticed a few things:

1. When I set CMAKE_OSX_DEPLOYMENT_TARGET the setting does NOT show up
if I do "ccmake ." in the build folder. Is this correct behaviour?

2. I use fortran as a linker language. At first I thought I set it
wrongly since it did not have any effect and I could not see a change
when doing "ccmake ." I then created an empty test project with c++
and noticed that I needed the linker flag "-mmacosx-version-min=10.5".
I added this to CMake_Fortran_LINK_FLAGS, which seems to work.

I then obviously had the problem that the libgfortran.dylib was not
created with the 10.5 compatibility, but this is the fault of macports
and have nothing to do with cmake.

Cheers,
Yngve

On 28 April 2011 18:08, Yngve Inntjore Levinsen
<yngve.levinsen at gmail.com> wrote:
> Hi Michael,
>
> I notice you know a lot about CMake and OSX, thanks once again! I'll give it
> a try asap.
>
> Cheers,
>
> Yngve
>
> On Thursday 28 April 2011 06:04:18 PM Michael Jackson wrote:
>
>> You probably want to set the "CMAKE_OSX_DEPLOYMENT_TARGET" to 10.5 and
>> recompile.
>
>> ___________________________________________________________
>
>> Mike Jackson www.bluequartz.net
>
>> Principal Software Engineer mike.jackson at bluequartz.net
>
>> BlueQuartz Software Dayton, Ohio
>
>>
>
>> On Apr 28, 2011, at 11:58 AM, Yngve Inntjore Levinsen wrote:
>
>>
>
>> > Dear all,
>
>> >
>
>> > I have compiled my code in OSX Snow Leopard, and then a colleague using
>> > OSX Leopard wanted to use the bundle. However, he had some strange error
>> > saying something like:
>
>> > dyld error: unknown required load command
>
>> >
>
>> > (sorry I don't have the exact error print at hand)
>
>> >
>
>> > I tried to google it and it looks like it is some kind of
>> > incompatibility with the dylibs between the two OS versions. Is there some
>> > flag I can set in CMakeLists.txt so that I compile a compatible version
>> > which will work on OSX Leopard as well? Or do you have another solution?
>
>> >
>
>> > Please ask any questions if something is unclear! I apologize if this
>> > has been answered before, but I couldn't find it.
>
>> >
>
>> > Best Regards,
>
>> > Yngve I. Levinsen
>
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