re PR other/54324 (GCC install document does not list minimum required g++ version)

	PR other/54324
	* doc/install.texi (Tools/packages necessary for building GCC):
	Suggest --disable-stage1-checking for older GCC's.

From-SVN: r194586

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 70d3ee5aba59397483996ef1d784a7158b9902ff..5d5c97d93c3d599756a1a4423763819b5f3e3945 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-12-18  Aldy Hernandez  <aldyh@redhat.com>
+
+       PR other/54324
+       * doc/install.texi (Tools/packages necessary for building GCC):
+       Suggest --disable-stage1-checking for older GCC's.
+
 2012-12-18  Aldy Hernandez  <aldyh@redhat.com>
 
        PR other/54324

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index e534216b08462a24080daef378f5f073116fda19..8273a87a361d54ef47e401ff9f16789260e68361 100644 (file)
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -254,6 +254,11 @@ To build all languages in a cross-compiler or other configuration where
 GCC binary (version 3.4 or later) because source code for language
 frontends other than C might use GCC extensions.
 
+Note that to bootstrap GCC with versions of GCC earlier than 3.4, you
+may need to use @option{--disable-stage1-checking}, though
+bootstrapping the compiler with such earlier compilers is strongly
+discouraged.
+
 @item GNAT
 
 In order to build the Ada compiler (GNAT) you must already have GNAT