toolchain/49928: can not build arm OABI files

[martin%NetBSD.org@localhost]

>Number:         49928
>Category:       toolchain
>Synopsis:       can not build arm OABI files
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 25 12:50:00 +0000 2015
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.17
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-rest.duskware.de 7.99.17 NetBSD 7.99.17 (GENERIC) #106: Mon May 18 15:54:46 CEST 2015 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/ssd/src/sys/arch/shark/compile/GENERIC shark
Architecture: earmv4
Machine: shark
>Description:

The current toolchain seems to offer no (working) way to generate OABI elf 
binaries. This prevents us from offering a smooth update path for old ARM users
where architectures have switched to EABI in netbsd-7.

The option selected by share/mk/bsd.own.mk and commpat/arm/oabi/bsd.oabi.mk
is

	ARM_APCS_FLAGS=      -mabi=apcs-gnu -mfloat-abi=soft

but this creates eabi files.

>How-To-Repeat:

build.sh -V MKCOMPAT=yes -m *arm*

>Fix:
n/a