Tiger installer [was: Re: ANN: Mac installer pkg for GHC - 6.8.2.20080211 trial release (Leopard, Intel)]

[Manuel M T Chakravarty]

Christian Maeder:
> Manuel M T Chakravarty wrote:
>>> $ ./HelloWorld-Tiger
>>> Hello World!
>>> $ ./HelloWorld-Leopard
>>> Bus error
>
> only setting
>
>  export MACOSX_DEPLOYMENT_TARGET=10.4
>
> on Leopard during compilation should make it run on a Tiger, too.

I tried that, too, but it somehow only works partially.  If I build  
ghc with that environment setting, the GHC binary still has some  
Leopard symbols in it (though much less than without that setting).   
Specifically, I am seeing

   dyld: bind: ghc-6.9.20080219:_fcntl$UNIX2003$lazy_ptr =  
libSystem.B.dylib:_fcntl$UNIX2003, *0x0108a413 = 0x92c7b7bc

on running

   env DYLD_PRINT_BINDINGS= compiler/stage2/ghc-6.9.20080219

Any idea why that may be?  In contrast, if I instruct GHC's build  
system to use

   -optl-isysroot -optl/Developer/SDKs/MacOSX10.4u.sdk -optl-mmacosx- 
version-min=10.4 -optl-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk

on all CC and LD targets, I don't seem to have any Leopard symbols  
anymore.  FWIW, Xcode 3.0 also seem to use explicit SDK options.

Manuel