an FAQ

[Bruno Haible <haible at ilog dot fr>]

Hi,

It will certainly become an FAQ why compilation of gcc 3.2 fails after
glibc 2.3 has been installed. Here is a patch to answer this FAQ, and
update some parts of the text to refer to gcc 3.2 as minimum
requirement.

Some parts of the FAQ still refer to gcc 2.8.1, glibc 2.0 and libc5.
Would you agree to throw out these nowadays-never-asked-questions?
I can provide a patch.

Bruno


2002-10-02  Bruno Haible  <bruno@clisp.org>

	* FAQ.in: Tell how to rebuild gcc-3.2.

diff -u -r1.132 FAQ.in
--- FAQ.in	5 Sep 2002 09:26:45 -0000	1.132
+++ FAQ.in	2 Oct 2002 13:23:16 -0000
@@ -66,11 +66,10 @@
 
 You should always try to use the latest official release.  Older versions
 may not have all the features GNU libc requires.  The current releases of
-gcc (2.95 or newer) should work with the GNU C library (for powerpc see
-?powerpc; for ARM see ?arm; for MIPS see ?mips).
+gcc (3.2 or newer) should work with the GNU C library (for MIPS see ?mips).
 
-Please note that gcc 2.95 and 2.95.x cannot compile glibc on Alpha due to
-problems in the complex float support.
+When configuring gcc, you need to pass it the configuration option
+'--enable-__cxa_atexit'.
 
 ??	When I try to compile glibc I get only error messages.
 	What's wrong?
@@ -96,21 +95,6 @@
 necessary features, but this is moot because glibc hasn't been ported to
 them.
 
-??powerpc	Which compiler should I use for powerpc?
-
-{GK} You want to use at least gcc 2.95 (together with the right versions
-of all the other tools, of course).  See also ?excpt.
-
-??arm	Which tools should I use for ARM?
-
-{PB} You should use egcs 1.1 or a later version.  For ELF systems some
-changes are needed to the compiler; a patch against egcs-1.1.x can be found
-at:
-
-<ftp://ftp.netwinder.org/users/p/philb/egcs-1.1.1pre2-diff-981126>
-
-Binutils 2.10.1 or later is also required.
-
 ??	Do I need some more things to compile the GNU C Library?
 
 {UD} Yes, there are some more :-).
@@ -305,9 +289,7 @@
 
 There are some failures which are not directly related to the GNU libc:
 - Some compilers produce buggy code.  No compiler gets single precision
-  complex numbers correct on Alpha.  Otherwise, the egcs 1.1 release should be
-  ok; gcc 2.8.1 might cause some failures; gcc 2.7.2.x is so buggy that
-  explicit checks have been used so that you can't build with it.
+  complex numbers correct on Alpha.  Otherwise, gcc-3.2 should be ok.
 - The kernel might have bugs.  For example on Linux/Alpha 2.0.34 the
   floating point handling has quite a number of bugs and therefore most of
   the test cases in the math subdirectory will fail.  Linux 2.2 has
@@ -367,8 +349,8 @@
 
 ??mips	Which tools should I use for MIPS?
 
-{AJ} You should use the current development version of gcc 3.0 or newer from
-CVS.  gcc 2.95.x does not work correctly on mips-linux.
+{AJ} You should use the current development version of gcc 3.2 or newer from
+CVS.
 
 You need also recent binutils, anything before and including 2.11 will not
 work correctly.  Either try the Linux binutils 2.11.90.0.5 from HJ Lu or the
@@ -635,7 +617,7 @@
 	glibc 2.x?
 
 {AJ} There's only correct support for glibc 2.0.x in gcc 2.7.2.3 or later.
-But you should get at least gcc 2.95.2.1 (or later versions) instead.
+But you should get at least gcc 2.95.3 (or later versions) instead.
 
 ??	The `gencat' utility cannot process the catalog sources which
 	were used on my Linux libc5 based system.  Why?
@@ -1025,7 +1007,7 @@
 {BH} You are using g++ 2.95.2? After upgrading to glibc 2.2, you need to
 apply a patch to the include files in /usr/include/g++, because the fpos_t
 type has changed in glibc 2.2.  The patch is at
-http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
+http://www.haible.de/bruno/gccinclude-glibc-2.2-compat.diff
 
 ??	When recompiling GCC, I get compilation errors in libio.
 
@@ -1033,6 +1015,12 @@
 This version is needed because the fpos_t type and a few libio internals
 have changed in glibc 2.2, and gcc 2.95.3 contains a corresponding patch.
 
+??	When recompiling GCC, I get compilation errors in libstdc++.
+
+{BH} You are trying to recompile gcc 3.2?  You need to patch gcc 3.2,
+because some last minute changes were made in glibc 2.3 which were not
+known when gcc 3.2 was released.  The patch is at
+http://www.haible.de/bruno/gcc-3.2-glibc-2.3-compat.diff
 
 ??	Why shall glibc never get installed on GNU/Linux systems in
 /usr/local?