BUT YOU should note that when you compile the kernel you don't compile only it !
You also compile many modules . You have problem namely with module.
So
COPTFLAGS= -O2 -pipe -funroll-loops
has affect only on kernel. But
CFLAGS= -O3 -pipe -funroll-loops
will be used for compiling your modules. In other words kernel will be optimized with -O2 , but modules will be optimized with -O3. Actually you don't have problem with compiling your KERNEL. You have problem with compiling some modules. My solution actually - compiling with option -O2 such modules that cannot be compiled with -O3 . All other modules I has compiled with -O3.
Didier WIROTH wrote:
Hi, thanks for answering
I'm using this in make.conf
COPTFLAGS= -O2 -pipe -funroll-loops
CFLAGS= -O3 -pipe -funroll-loops
Thx for answering.
But... hmm..., I'm not using -O3 for the kernel, or at least I thought I wasn't!?
When using COPTFLAGS in make.conf, isn't CFLAGS ignored when building the kernel? I build the kernel with: make -j2 buildkernel KERNCONF=MYKERNEL
Does it mean that COPTFLAGS & CFLAGS are actually merged?! This: COPTFLAGS= -O2 -pipe -funroll-loops CFLAGS= -O3 -pipe -funroll-loops
Results in this: gcc -O2 -O3 -pipe -funroll-loops
thx
This is because using -O3 adds the option -finline-functions. You should only use -O when compiling the kernel and that's all that is actually supported.
--roop
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