Might be nice to prevent these, if easy/possible. ../../gcc-4.5/gcc/config/t-darwin:25: warning: overriding commands for target `darwin.o' ../../gcc-4.5/gcc/config/t-darwin:25: warning: ignoring old commands for target `darwin.o' ../../gcc-4.5/gcc/config/t-darwin:31: warning: overriding commands for target `darwin-c.o' ../../gcc-4.5/gcc/config/t-darwin:31: warning: ignoring old commands for target `darwin-c.o' ../../gcc-4.5/gcc/config/t-darwin:35: warning: overriding commands for target `darwin-f.o' ../../gcc-4.5/gcc/config/t-darwin:35: warning: ignoring old commands for target `darwin-f.o' ../../gcc-4.5/gcc/config/t-darwin:40: warning: overriding commands for target `darwin-driver.o' ../../gcc-4.5/gcc/config/t-darwin:40: warning: ignoring old commands for target `darwin-driver.o' ../../gcc-4.5/gcc/config/t-darwin:48: warning: overriding commands for target `crt3.o' ../../gcc-4.5/gcc/config/t-darwin:48: warning: ignoring old commands for target `crt3.o'
I believe this was fixed by r159979... 2010-05-28 Iain Sandoe <iains@gcc.gnu.org> * config.gcc (*-*-darwin*): Adjust t-make fragments for Darwin.
indeed - closing as fixed.