re: bootstrap with -fnew-abi?

[<bkoz@haight.constant.com>]

  Is it possible to bootstrap with the -fnew-abi option for g++, so
  that -fnew-abi is set by default for the resulting g++-compiler? No
  anser in the FAQ!

just change the relevant bits in gcc/cp/decl2.c (440):

int flag_new_abi;

to 

int flag_new_abi = 1;

There is a thread about using new flags on the libstdc++-v3 list:
search for "HOWTO-honor-std" in the archives of the mailing list. 
http://sourceware.cygnus.com/libstdc++

-Benjamin

This patch will also work:

Index: decl2.c
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/cp/decl2.c,v
retrieving revision 1.256
diff -c -p -r1.256 decl2.c
*** decl2.c	1999/09/12 02:45:26	1.256
--- decl2.c	1999/09/13 20:14:50
*************** int flag_weak = 1;
*** 437,443 ****
  
  /* Nonzero to enable experimental ABI changes.  */
  
! int flag_new_abi;
  
  /* Nonzero to not ignore namespace std. */
  
--- 437,443 ----
  
  /* Nonzero to enable experimental ABI changes.  */
  
! int flag_new_abi = 1;
  
  /* Nonzero to not ignore namespace std. */