From 677e7496ff4020d6b19f1025171a8254b6073c34 Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Wed, 17 Oct 2001 17:47:54 +0000 Subject: [PATCH] Mention the crashes on Yellow Dog GNU/Linux on MacPPC, and provide a work-around. --- etc/PROBLEMS | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/etc/PROBLEMS b/etc/PROBLEMS index 64cf3485f3f..d60b8b14c8e 100644 --- a/etc/PROBLEMS +++ b/etc/PROBLEMS @@ -58,6 +58,43 @@ in the `/gnu/emacs/windows' directory a program called `djtarnt.exe' which can be used to unpack `.tar.gz' and `.zip' archives without mangling them. +* Emacs crashes when dumping itself on Mac PPC running Yellow Dog GNU/Linux. + +The crashes happen inside the function Fmake_symbol; here's a typical +C backtrace printed by GDB: + + 0x190c0c0 in Fmake_symbol () + (gdb) where + #0 0x190c0c0 in Fmake_symbol () + #1 0x1942ca4 in init_obarray () + #2 0x18b3500 in main () + #3 0x114371c in __libc_start_main (argc=5, argv=0x7ffff5b4, envp=0x7ffff5cc, + +This could happen because GCC version 2.95 and later changed the base +of the load address to 0x10000000. Emacs needs to be told about this, +but we currently cannot do that automatically, because that breaks +other versions of GNU/Linux on the MacPPC. Until we find a way to +distinguish between the Yellow Dog and the other varieties of +GNU/Linux systems on the PPC, you will have to manually uncomment the +following section near the end of the file src/m/macppc.h in the Emacs +distribution: + + #if 0 /* This breaks things on PPC GNU/Linux ecept for Yellowdog, + even with identical GCC, as, ld. Let's take it out until we + know what's really going on here. */ + /* GCC 2.95 and newer on GNU/Linux PPC changed the load address to + 0x10000000. */ + #if defined __linux__ + #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) + #define DATA_SEG_BITS 0x10000000 + #endif + #endif + #endif /* 0 */ + +Remove the "#if 0" and "#endif" directives which surround this, save +the file, and then reconfigure and rebuild Emacs. The dumping process +should now succeed. + * JPEG images aren't displayed. This has been reported when Emacs is built with jpeg-6a library. -- 2.39.2