On Mon, Nov 14, 2011 at 08:18:16AM +0100, Rolf Eike Beer wrote:
> > diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake
> > index 8d6f5df..bdcaf9d 100644
> > --- a/Modules/Compiler/GNU.cmake
> > +++ b/Modules/Compiler/GNU.cmake
> > @@ -24,6 +24,15 @@ macro(__compiler_gnu lang)
> > set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
> > set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
> >
> > + # Older versions of gcc (< 4.5) contain a bug causing them to report a
> > missing + # header file as a warning if depfiles are enabled, causing
> > check_header_file + # tests to always succeed. Work around this by
> > disabling dependency tracking + # in try_compile mode.
> > + GET_PROPERTY(_IN_TC GLOBAL PROPERTY IN_TRY_COMPILE)
> > + if(NOT _IN_TC OR CMAKE_FORCE_DEPFILES)
> > + set(CMAKE_DEPFILE_FLAGS_${lang} "-MMD -MF <DEPFILE>")
> > + endif()
> > +
> > # Initial configuration flags.
> > set(CMAKE_${lang}_FLAGS_INIT "")
> > set(CMAKE_${lang}_FLAGS_DEBUG_INIT "-g")
>
> This may only affect Ninja, but it looks like a general bug. Shouldn't this
> be
> it's own commit then?
The Ninja generator is the only user of CMAKE_DEPFILE_FLAGS_${lang}
variables. I will add this in its own commit to make it clear that
these variables can also be used by other generators.
Thanks,
--
Peter
--
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