I have a fresh Ubuntu 7.04 Feisty installation which use by default 4.1.2 Version. The main reason is that I cannot create "library.a" when using gcc 4.1.2. However, my advisor pointed that I need to use 3.3 version, which works properly. So I decided to follow the official manual: build from a "gcc_temp_directory" (outside source code), however, it fails at the ./configure step. I'll appreciate any kind of help . I can post any log you'll need for guess whether my settings are wrong or my dependencies are not solved, etc...I'n not sure if this post should be placed here , but I have no way to solve my problem. Cheers / Frank , espasapalau at gmail dot com -- View this message in context: http://www.nabble.com/Anyone-knows-how-to-%22undergrade%22-gcc-------non-expert-user-tf4361769.html#a12431910 Sent from the gcc - Help mailing list archive at Nabble.com.