[cfe-dev] Results of the FreeBSD Ports build with CC=clang

[रजनीश]

>> -O4: You could patch the packages, although I'm slightly hesitant to
>> suggest that... anyone have any better suggestions?
>
> This is tricky.  I wonder if there is some magic that the clang driver
> can do for -O4 when the linker doesn't support LTO?

FYI,

Issue is that second -O4 is being picked up and the first one is not  
ignored.
So you have duplicate optimization arguments being passed along with  
greater than 4.
Either it should be duplicate error or second one should be ignored  
that is probably what gcc is doing.
cc -O2 -pipe -fno-strict-aliasing -O4 -I/src -DVAD1 -std=gnu99 -fstack- 
protector -c sp_enc.c
cc: warning: argument unused during compilation: '-O2'

cc -O2 -pipe -fno-strict-aliasing -O6 -Wall -W -pedantic -c stmpclean.c
cc: warning: argument unused during compilation: '-O2'
clang-cc: for the -O option: : '6' invalid optimization level! ***  
Error code 1

http://pointyhat.freebsd.org/errorlogs/i386-errorlogs/e.8-exp.20090507142441/amrcoder-1.0.log
http://pointyhat.freebsd.org/errorlogs/i386-errorlogs/e.8-exp.20090507142441/stmpclean-0.3.log