------- Comment #3 from sdack at gmx dot de 2007-02-16 13:17 ------- Subject: Re: top-level BOOT_CFLAGS not being used for bootstrapping
pinskia at gcc dot gnu dot org schrieb: > ------- Comment #1 from pinskia at gcc dot gnu dot org 2007-02-15 21:28 > ------- > You mentioned BOOT_STRAP in your comment is that correct? > Also did you use "make bootstrap" and not just a plain make? Yes, I did (bootstrap and profiledbootstrap). What happens is, that when I pass i.e. BOOT_CFLAGS="-O3 -s" to make, it actually does get passed, but then is followed by a "-g -O2" resulting in "-O3 -s -O2 -g", which simply clobbers the user's flags. I did not see that earlier when I made that report, sorry. One little thing if I may add: Another triviality is that the Makefiles somehwere do the assumption that following passes will get compiled with gcc and not by an unknown compiler and therefore prepends CFLAGS with -O2 to produce optimized output. This does not cause problems when you pass it -O1 since it will clobber the -O2. However, I think it should not make this assumption or optimisation and leave it all to the user since it might not be wanted or applicable. It is good enough when CFLAGS has a default value that will then be used wherever possible. Sven -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30810
