Re: [PATCH] arch/i386/Makefile,scripts/gcc-version.sh,Makefile small fixes

[Valdis . Kletnieks]

On Sat, 24 Jan 2004 10:17:04 PST, Andrew Morton said:

> > Makefile: 
> > *  There is no point in adding -funit-at-a-time option because it is
> >    enabled by default at levels -Os, -O2 and -O3.
> 
> hm.  Didn't Andi say that adding -fno-unit-at-a-time caused code shrinkage?

Also, at least for the Fedora gcc-ssa compiler, -funit-at-a-time is *not* a
default option (provably so - building with gcc-ssa makes a kernel that hangs
*very* early on (right after 'decompressing the kernel' - I haven't dug into
this yet) - but commenting out this:

# Enable unit-at-a-time mode when possible. It shrinks the
# kernel considerably.
CFLAGS += $(call check_gcc,-funit-at-a-time,)

results in a working kernel.  This is with:

%  gcc-ssa --version
gcc-ssa (GCC) 3.5-tree-ssa 20040115 (Fedora Core Rawhide 3.5ssa-108)

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