05.11.2012 17:42, Andriy Gapon wrote:
on 05/11/2012 16:51 Dimitry Andric said the following:
On 2012-11-05 12:41, Volodymyr Kostyrko wrote:
When CLANG_IS_CC build fails at sys/boot/i386/boot2:
ld -static -N --gc-sections -nostdlib -m elf_i386_fbsd -Ttext 0x2000 -o
boot2.out /usr/obj/usr/src/sys/boot/i386/boot2/../btx/lib/crt0.o boot2.o
sio.o
objcopy -S -O binary boot2.out boot2.bin
btxld -v -E 0x2000 -f bin -b
/usr/obj/usr/src/sys/boot/i386/boot2/../btx/btx/btx -l boot2.ldr -o
boot2.ld -P 1 boot2.bin
kernel: ver=1.02 size=690 load=9000 entry=9010 map=16M pgctl=1:1
client: fmt=bin size=1575 text=0 data=0 bss=0 entry=0
output: fmt=bin size=1e05 text=200 data=1c05 org=0 entry=0
-5 bytes available
This seems to be caused by r242562, which is an MFC of r241301. The
code changes are quite trivial though. Strangely enough, on head it
does build successfully, but head is using a newer version of clang, so
that may explain the difference. Investigating...
I suspect that some earlier space-saving commit was not MFC-ed to stable/9.
This can be easily checked:
# cd /usr/src/sys/boot/i386/boot2/
# make clean
# svn up
Updated to revision 242616.
# setenv PATH /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# unsetenv CCACHE_PATH
# /usr/local/bin/clang -v
clang version 3.2 (trunk)
Target: amd64-portbld-freebsd9.1
Thread model: posix
# echo CC=/usr/local/bin/clang >> /etc/src.conf
# echo CXX=/usr/local/bin/clang++ >> /etc/src.conf
# make
....
ld -static -N --gc-sections -nostdlib -m elf_i386_fbsd -Ttext 0x2000 -o
boot2.out /usr/obj/usr/src/sys/boot/i386/boot2/../btx/lib/crt0.o boot2.o
sio.o
objcopy -S -O binary boot2.out boot2.bin
btxld -v -E 0x2000 -f bin -b
/usr/obj/usr/src/sys/boot/i386/boot2/../btx/btx/btx -l boot2.ldr -o
boot2.ld -P 1 boot2.bin
kernel: ver=1.02 size=690 load=9000 entry=9010 map=16M pgctl=1:1
client: fmt=bin size=154d text=0 data=0 bss=0 entry=0
output: fmt=bin size=1ddd text=200 data=1bdd org=0 entry=0
35 bytes available
dd if=boot2.ld of=boot2 obs=7680 conv=osync
14+1 records in
1+0 records out
7680 bytes transferred in 0.000099 secs (77433305 bytes/sec)
I bet on clang 3.2.
--
Sphinx of black quartz, judge my vow.
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