The $(LIBGCC2_CFLAGS) removed in the patch is prehistoric
(before first commit in the FSF repo) but was once needed or at
least seemed like a good idea; I can't recall which. These
days, its major effect is to add "-g", which with the recent
dwarf2 changes is lethal, if you're unlucky. With the default
CRT_CALL_STATIC_FUNCTION it might add, in a dwarf2 frame info
debug section:
.byte 0x4 ;# DW_CFA_advance_loc4
.dword .LCFI4-.LCFI3
where .LCFI4 and .LCFI3 are in different sections due to the
switching-sections-with-asm hack. That kind of expression is
not supported. There have to be a few unlucky circumstances:
the assembler has to not support CFI directives (the gcc
configure-test failing) and the stack frame for
void call_foo(void) { asm(".section .init"); foo(); asm(".text"); }
has to be non-empty; call_foo has to explicitly store its
return-address (as with call insns in RISC ISAs).
Committed after testing that it works as good as defining
CRT_CALL_STATIC_FUNCTION, which would be needed in several
flavors due to PIC and ISA variation.
PR target/49684
* config/cris/t-elfmulti (CRTSTUFF_T_CFLAGS): Don't include
$(LIBGCC2_CFLAGS).
Index: config/cris/t-elfmulti
===================================================================
--- config/cris/t-elfmulti (revision 175272)
+++ config/cris/t-elfmulti (working copy)
@@ -1,4 +1,4 @@
-# Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2007, 2011 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
@@ -31,4 +31,4 @@ MULTILIB_MATCHES = \
MULTILIB_EXTRA_OPTS = mbest-lib-options
INSTALL_LIBGCC = install-multilib
LIBGCC = stmp-multilib
-CRTSTUFF_T_CFLAGS = $(LIBGCC2_CFLAGS) -moverride-best-lib-options
+CRTSTUFF_T_CFLAGS = -moverride-best-lib-options
brgds, H-P
