[CMake] Unix makefiles feature request

[Brad King]

Tyler Roscoe wrote:
> On Wed, Jun 24, 2009 at 11:38:56AM -0400, Brad King wrote:
>> Flags can be passed to target_link_libraries too:
>>
>>   add_library(A STATIC a.c)
>>   add_library(B STATIC b.c)
>>   add_executable(main main.c)
>>   target_link_libraries(main -Wl,--start-group A B -Wl,--end-group)
> 
> This is cool and I did not know it. I also don't see it in the
> documentation. Maybe you could add an example similar to what you wrote
> above to the docs for target_link_libraries()?

Actually this was added in CVS HEAD in February.  I've scheduled the
patch for inclusion in 2.6.5.

>> CMake 2.6 also supports circular dependencies for static libraries:
>>
>>   add_library(A STATIC a.c)
>>   add_library(B STATIC b.c)
>>   target_link_libraries(A B)
>>   target_link_libraries(B A)
>>   add_executable(main main.c)
>>   target_link_libraries(main A)
>>
>> The link line will contain
>>
>>  ... -o main libA.a libB.a libA.a libB.a
> 
> I feel like I've read this somewhere (the book perhaps?) but I also
> can't find this in the command docs. Another snippet to add.

Done, and also scheduled for 2.6.5.

-Brad