Build world with DEBUG_FLAGS='-g -O0'

[Dmitry Krivenok]

Hello Hackers,

I'm trying to build FreeBSD-CURRENT (r206494) with DEBUG_FLAGS='-g -O0'.

Below are the commands I executed:

export DEBUG_FLAGS='-g -O0'

cd /usr/src/

time make buildworld


I got the following error:

...

...

===> sys/boot/i386/boot2 (all)

objcopy -S -O binary boot1.out boot1

dd if=/dev/zero of=boot2.ldr bs=512 count=1

1+0 records in

1+0 records out

512 bytes transferred in 0.000142 secs (3603160 bytes/sec)

cc -Os  -fno-guess-branch-probability  -fomit-frame-pointer
-fno-unit-at-a-time  -mno-align-long-strings  -mrtd  -mno-mmx -mno-3dnow
-mno-sse -mno-sse2 -mno

-sse3  -DUFS1_AND_UFS2  -DFLAGS=0x80  -DSIOPRT=0x3f8  -DSIOFMT=0x3
-DSIOSPD=9600  -I/usr/src/sys/boot/i386/boot2/../../common
-I/usr/src/sys/boot/i386/boot

2/../btx/lib -I.  -Wall -Waggregate-return -Wbad-function-cast -Wcast-align
-Wmissing-declarations -Wmissing-prototypes -Wnested-externs  -Wpointer-arith
-W

shadow -Wstrict-prototypes -Wwrite-strings  -Winline --param
max-inline-insns-single=100 -ffreestanding
-mpreferred-stack-boundary=2  -mno-mmx
-mno-3dnow -mn

o-sse -mno-sse2 -mno-sse3 -m32 -march=i386 -g -O0 -std=gnu99   -S -o
boot2.s.tmp /usr/src/sys/boot/i386/boot2/boot2.c

sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s

rm -f boot2.s.tmp

as  --32 -o boot2.o boot2.s

cc -Os  -fno-guess-branch-probability  -fomit-frame-pointer
-fno-unit-at-a-time  -mno-align-long-strings  -mrtd  -mno-mmx -mno-3dnow
-mno-sse -mno-sse2 -mno

-sse3  -DUFS1_AND_UFS2  -DFLAGS=0x80  -DSIOPRT=0x3f8  -DSIOFMT=0x3
-DSIOSPD=9600  -I/usr/src/sys/boot/i386/boot2/../../common
-I/usr/src/sys/boot/i386/boot

2/../btx/lib -I.  -Wall -Waggregate-return -Wbad-function-cast -Wcast-align
 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs  -Wpointer-arith
-W

shadow -Wstrict-prototypes -Wwrite-strings  -Winline --param
max-inline-insns-single=100 -ffreestanding
-mpreferred-stack-boundary=2  -mno-mmx
-mno-3dnow -mn

o-sse -mno-sse2 -mno-sse3 -m32 -march=i386 -g -O0 -std=gnu99   -c
/usr/src/sys/boot/i386/boot2/sio.S

ld -static -N --gc-sections -nostdlib -m elf_i386_fbsd -Ttext 0x2000 -o
boot2.out /usr/src/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/src/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=20ed text=0 data=0 bss=0 entry=0

output: fmt=bin size=297d text=200 data=277d org=0 entry=0

-2941 bytes available

*** Error code 1



Stop in /usr/src/sys/boot/i386/boot2.

*** Error code 1



Stop in /usr/src/sys/boot/i386.

*** Error code 1



Stop in /usr/src/sys/boot.

*** Error code 1



Stop in /usr/src/sys.

*** Error code 1



Stop in /usr/src.

*** Error code 1



Stop in /usr/src.

*** Error code 1



Stop in /usr/src.



real    87m23.033s

user    53m7.195s

sys     30m10.744s


Error message "-2941 bytes available" is not clear for me :)
What's wrong?

Thank you beforehand!

P.S.
Note that compiling with DEBUG_FLAGS='-g' works fine.

-- 
Sincerely yours, Dmitry V. Krivenok
e-mail: krivenok.dmitry at gmail.com
skype: krivenok_dmitry
jabber: krivenok_dmitry at jabber.ru
icq: 242-526-443