http://gcc.gnu.org/onlinedocs/gccint/Makefile.html
http://gcc.gnu.org/install/build.html
I read that, could you please quote the part that documents the current
behavior.
If you wish to use non-default GCC flags when compiling the stage2 and
stage3 compilers, set BOOT_CFLAGS on the command line when doing `make'.
Non-default optimization flags are less well tested here than the
default of `-g -O2', but should still work.
Let me offer a counter quote:
The counter quote is obviously wrong, thanks for the report.
Paolo