[Bug bootstrap/11317] make bootstrap-lean fails with #error Unrecognized value in TARGET_CPU_DEFAULT

[ebotcazou at gcc dot gnu dot org]

------- Additional Comments From ebotcazou at gcc dot gnu dot org  2004-05-04 17:18 -------
> Eric, maybe you want to add a note to install.texi about this?

Good idea.  What about the following wording?

Index: install.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/install.texi,v
retrieving revision 1.278
diff -u -p -r1.278 install.texi
--- install.texi        19 Apr 2004 21:11:47 -0000      1.278
+++ install.texi        4 May 2004 17:14:17 -0000
@@ -3459,6 +3459,13 @@ that supports only 32-bit binaries, one
 @option{--disable-multilib}, since we will not be able to build the
 64-bit target libraries.

+GCC 3.3 and GCC 3.4 trigger code generation bugs in earlier versions of
+the GNU compiler (especially GCC 3.0.x versions), which leads to the
+miscompilation of the stage1 compiler and the subsequent failure of the
+bootstrap process.  A workaround is to use GCC 3.2.3 as an intermediary
+stage, i.e. to bootstrap that compiler with the base compiler and then
+use it to bootstrap the final compiler.
+
 GCC 3.4 triggers a code generation bug in versions 5.4 (Sun ONE Studio 7)
 and 5.5 (Sun ONE Studio 8) of the Sun compiler, which causes a bootstrap
 failure in form of a miscompilation of the stage1 compiler by the Sun

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11317