On Sun, Apr 15, 2012 at 3:36 AM, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > On 15 April 2012 14:08, niXman wrote: >> Hello list! >> >> When configuring gcc, I noticed that sometimes in '--enable-languages' >> in addition to languages, 'lto' is also specified. >> For what? > > Link-Time Optimisation is enabled automatically unless you say --disable-lto > >> Is it really necessary to specify 'lto' in the list of languages? > > I don't understand the question. It's not necessary for you to > specify it, because it's added automatically. It's necessary for the > configure script to add it if you want LTO support. If you don't want > LTO support, configure with --disable-lto. I think the question was more why --enable-languages=lto instead of --enable-lto.
