[CMake] Resetting CMAKE_Fortran_FLAGS for a specific file

[marco restelli]

2014-08-13 15:53 GMT+0200, Mark Abraham <mark.j.abraham at gmail.com>:
> On Wed, Aug 13, 2014 at 3:18 AM, marco restelli <mrestelli at gmail.com>
> wrote:
>
>> Hi Petr,
>>    thanks, very informative!
>>
>> 2014-08-13 9:20 GMT+0200, Petr Kmoch <petr.kmoch at gmail.com>:
>> > Hi Marco.
>> >
>> > Sane compilers allow later command-line options to override earlier
>> > ones,
>> > so what you're doing should be fine. Unfortunately, I know some Fortran
>> > compilers are not sane in this regard.
>>
>> Here, I would really like to reduce as much as possible the flags
>> regardless of the chosen compiler, so "undoing" the chosen flags
>> seems to me cumbersome and compiler dependent, compared to resetting
>> them altogether. I like the idea of OBJECT libraries better (it also
>> solves other problems I have, I did not know about it!).
>>
>> > If you really need to solve this by explicitly modifying the global
>> > list
>> > for a particular file, the only thing I can think of is move those
>> > files
>> to
>> > a separate CMakeList and turn them into an object library:
>>
>> This almost works, I have a problem specifying liking dependencies for
>> the OBJECT libraries. With a normal library, I can use
>>
>> TARGET_LINK_LIBRARIES( my_library ${other_libs_my_library_depends_on} )
>>
>> but if my_library is OBJECT I see the error
>>
>>   Object library target "my_library" may not link to anything.
>>
>
> See http://www.cmake.org/cmake/help/v3.0/command/add_library.html for the
> correct way to do things with object libraries - for this purpose, they are
> closer to source files than libraries, which makes sense given that there's
> not actually a library written to disk anywhere.

Mark, thanks, but here I don't find anything that answers my question,
namely specifying that my OBJECT library (i.e. the files included in
it) require other libraries for linking.

Marco