NetBSD/arc 9.0 /usr/mdec/boot includes extra debug info?

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

Hi,

I notice NetBSD/arc 9.0 bootloader (/usr/mdec/boot) silently hang,
while a boot binary I build from netbsd-9 tree just works.

It looks /usr/mdec/boot in NetBSD/arc 9.0 base.tgz includes debug info:

---
# tar -ztvf /usr/INSTALL/base.tgz | grep /usr/mdec/boot
-r--r--r--  0 root   wheel   282217 Feb 14 09:06 ./usr/mdec/boot
# ls -l /usr/mdec/boot
-r--r--r--  1 root  wheel  282217 Feb 14 09:06 /usr/mdec/boot
# size -Ax /usr/mdec/boot
/usr/mdec/boot  :
section       size         addr
.text       0xb4c0   0x80f00000
.text.st     0x304   0x80f0b4c0
.rodata     0x12d0   0x80f0b7d0
.reginfo      0x18   0x80f0ca98
.MIPS.ab      0x18   0x80f0cab0
.data        0x170   0x80f0cad0
.sbss        0x484   0x80f0cc40
.bss         0x280   0x80f0d0d0
.gnu.att      0x10          0x0
.debug_i   0x1c404          0x0
.debug_a    0x51b3          0x0
.debug_l    0xc431          0x0
.debug_a     0x660          0x0
.debug_r     0x830          0x0
.debug_l    0x4d60          0x0
.debug_s    0x32a9          0x0
Total      0x43bc9


# 
---

while a boot binary I build locally doesn't include them:
---
% pwd
/s/netbsd-9/src/sys/arch/arc/stand/boot
% ls -l obj.arc/boot
-rwxr-xr-x  1 tsutsui  wheel  58552 Jun  2 22:40 obj.arc/boot*
% /s/netbsd-9/src/obj.arc/tooldir.NetBSD-9.0-i386/bin/mipsel--netbsd-size -Ax obj.arc/boot
obj.arc/boot  :
section      size         addr
.text      0xb4c0   0x80f00000
.text.st    0x304   0x80f0b4c0
.rodata    0x12b0   0x80f0b7d0
.reginfo     0x18   0x80f0ca78
.MIPS.ab     0x18   0x80f0ca90
.data       0x170   0x80f0cab0
.sbss       0x484   0x80f0cc20
.bss        0x280   0x80f0d0b0
.gnu.att     0x10          0x0
Total      0xd328


% 
---

Is there any possible build.sh options (or mk.conf definitions)
for the release binaries that could cause such difference?

/usr/mdec/boot in daily netbsd-9/202006012200Z build also includes
those debug info, but no clue in logs due to -N0 option.
 https://releng.netbsd.org/builds/netbsd-9/202006012200Z/arc.build

---
Izumi Tsutsui