hello,
I'm currently trying to create x86_64 crosschain and found several issues :
1)glibc won't compile on linux plateforms if threads aren't compiled
2)methods given on the wiki help to create a 1rst stage crosscompiler that can't
compile glibc with threads
this issue is fixed by installing glibc's headers on the target filesystem first
and then create the crosscompiler....
but strangely there is a new issue that appears then :
the ./xgcc commands in gcc/Makefile.in dont use the --with-local-prefix= as
-isystem
=> headers of the "target" aren't used.... then thread support can't be
activated, then glibc can't be compiled...
this is fixed by doing :
--- gcc-3.4.3/gcc/Makefile.in 2005-05-21 10:35:08.613136000 +0200
+++ gcc-3.4.3-new/gcc/Makefile.in 2005-05-21 11:33:50.124784872 +0200
@@ -286,7 +286,7 @@
# The GCC to use for compiling libgcc.a and crt*.o.
# Usually the one we just built.
# Don't use this as a dependency--use $(GCC_PASSES) or $(GCC_PARTS).
-GCC_FOR_TARGET = $(STAGE_CC_WRAPPER) ./xgcc -B./ -B$(build_tooldir)/bin/
-isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include
-L$(objdir)/../ld
+GCC_FOR_TARGET = $(STAGE_CC_WRAPPER) ./xgcc -B./ -B$(build_tooldir)/bin/
-isystem $(build_tooldir)/include -isystem $(local_prefix)/include -isystem
$(build_tooldir)/sys-include -L$(objdir)/../ld
but then I get 2 different comportements when compiling gcc :
1) if I compile from the top source directory I get the same result as if the
patch wasn't applied
(in fact instead of ./xgcc I get /usr/src/sorcery/gcc-3.4.3/gcc/xgcc
[/usr/src/sorcery/gcc-3.4.3 is the top build dir]) seems that those values
commes from configure script...
2)if I do a cd gcc && make then everything finish fine..... and I have a
crosscompiler with thread support....
--
Summary: creating first stage compiler
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jlm_devel at laposte dot net
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21698
