Re: [AD] CMake on Mac OS X

[Evert Glebbeek <eglebbk@xxxxxxxxxx>]

On 9 Sep 2008, at 09:33, Peter Wang wrote:
> I found this http://gcc.gnu.org/ml/gcc/2005-06/msg00186.html
> and the following message.
>
> As a hack, could someone try this:

Didn't fixit for me, unfortunately, but I did some more reading and  
searching (and then searching based on new errors that came up) until  
I found a combination of flags that does seem to compile (I haven't  
had time to actually test things, and I wont until tonight):

Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt      (revision 10775)
+++ CMakeLists.txt      (working copy)
@@ -548,6 +548,7 @@
         set_target_properties(${target}
             PROPERTIES
             COMPILE_FLAGS "${more_extra_flags} ${LIBRARY_CFLAGS} - 
DALLEGRO_SRC"
+            LINK_FLAGS "-single_module -flat_namespace -undefined  
suppress"
             OUTPUT_NAME ${nam}
             )

You apparently don't need to pass "-Wl," (and it also doesn't work  
with "-undefined suppress" because that has a space in it). You need - 
undefined suppress (or -undefined warning) to get rid of a complaint  
about an unresolved __mangled_main_address, which generates a  
complaint about two level namespace something or other, which goes  
away when you pass -flat_namespace.
Now, I have no idea what all of this means exactly. I'll try to  
figure that out. Apart from -single_module at the linker stage, I  
have the impression that you can also pass -fno-common to the  
compiler (actually, I should just test that), but I have no idea  
which is better.

Evert