Any reason why configure isn't choosing `config/mh-solaris' over `config/mh-sysv4' ? It probably should. $ configure --prefix=/usr/local/egcs Configuring for a i386-pc-solaris2.5.1 host. Created "Makefile" in /export/tmp/egcs using "/usr/local/SourceTrees/egcs-1.0/config/mh-sysv4" Links are now set up to build a native compiler for i386-pc-solaris2.5.1