The minimum requirements referenced in install.texi for GNAT seem to be out of date. Someone more Ada knowledgeable needs to confirm a minimum version for 4.0.0 and 4.1.0.
For sure, to avoid problems building a cross GNAT, you should have a native GNAT version that is the same as the version you are building cross. It would be nice to make this distinction here. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21247 for a report. ========================================================================= In order to build GNAT, the Ada compiler, you need a working GNAT compiler (GNAT version 3.14 or later, or GCC version 3.1 or later), including GNAT tools such as @command{gnatmake} and @command{gnatlink}, since the Ada front end is written in Ada (with some GNAT-specific extensions), and GNU make. ========================================================================= -- Summary: [doc] gnat version requirements in install.texi Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: other AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: joel at gcc dot gnu dot org CC: corsepiu at gcc dot gnu dot org,gcc-bugs at gcc dot gnu dot org,laurent at guerby dot net http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21629