yann@1393: diff -durN gcc-4.4.0.orig/gcc/doc/invoke.texi gcc-4.4.0/gcc/doc/invoke.texi
yann@1393: --- gcc-4.4.0.orig/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200
yann@1393: +++ gcc-4.4.0/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200
yann@1393: @@ -5411,6 +5411,11 @@
yann@1393:  Please note the warning under @option{-fgcse} about
yann@1393:  invoking @option{-O2} on programs that use computed gotos.
yann@1393:  
yann@1393: +NOTE: In Gentoo, @option{-D_FORTIFY_SOURCE=2} is set by default, and is
yann@1393: +activated when @option{-O} is set to 2 or higher.  This enables additional
yann@1393: +compile-time and run-time checks for several libc functions.  To disable,
yann@1393: +specify either @option{-U_FORTIFY_SOURCE} or @option{-D_FORTIFY_SOURCE=0}.
yann@1393: +
yann@1393:  @item -O3
yann@1393:  @opindex O3
yann@1393:  Optimize yet more.  @option{-O3} turns on all optimizations specified
yann@1393: diff -durN gcc-4.4.0.orig/gcc/gcc.c gcc-4.4.0/gcc/gcc.c
yann@1393: --- gcc-4.4.0.orig/gcc/gcc.c	2009-03-17 22:25:59.000000000 +0100
yann@1393: +++ gcc-4.4.0/gcc/gcc.c	2009-05-27 21:38:11.000000000 +0200
yann@1393: @@ -807,6 +807,7 @@
yann@1393:   %{H} %C %{D*&U*&A*} %{i*} %Z %i\
yann@1393:   %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
yann@1393:   %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
yann@1393: + %{!D_FORTIFY_SOURCE:%{!D_FORTIFY_SOURCE=*:%{!U_FORTIFY_SOURCE:-D_FORTIFY_SOURCE=2}}}\
yann@1393:   %{E|M|MM:%W{o*}}";
yann@1393:  
yann@1393:  /* This contains cpp options which are common with cc1_options and are passed