On 2017-May-10, at 8:37 PM, bob prohaska <fbs at www.zefox.net> wrote:
> With freebsd at
> FreeBSD www.zefox.com 12.0-CURRENT FreeBSD 12.0-CURRENT #50 r318138: Wed May
> 10 10:30:51 PDT 2017 b...@www.zefox.com:/usr/obj/usr/src/sys/RPI2 arm
>
> ports at
> Revision: 440570
>
> and using
> root@www:/usr/ports/www/firefox # make CFLAGS='-mcpu=cortex-a7' -DBATCH >
> make.log &
>
> the compilation seems to halt with
> /usr/ports/www/firefox/work/firefox-53.0.2/media/webrtc/trunk/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S:88:3:
> error: instruction requires: armv6t2
> sbfx r11, r6, #12, #16
> ^
> /usr/ports/www/firefox/work/firefox-53.0.2/media/webrtc/trunk/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S:99:3:
> error: instruction requires: armv6t2
> sbfx r11, r6, #12, #16
> ^
> /usr/ports/www/firefox/work/firefox-53.0.2/media/webrtc/trunk/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S:142:3:
> error: instruction requires: armv6t2
> sbfx r8, r6, #12, #16
> ^
> gmake[6]: ***
> [/usr/ports/www/firefox/work/firefox-53.0.2/config/rules.mk:989:
> filter_ar_fast_q12_armv7.o] Error 1
>
> I'm told this is likely caused by CFLAGS='-mcpu=cortex-a7', which is
> needed to avoid a "NEON not enabled" error earlier in the compile.
If the .S files (assembler source files) are used via the
likes of (from looking at some vintage of config/rules.mk
on the web):
$(SOBJS):
$(REPORT_BUILD)
$(AS) -o $@ $(DEFINES) $(ASFLAGS) $($(notdir $<)_FLAGS)
$(LOCAL_INCLUDES) -c $<
then the -mcpu=cortex-a7 is likely not involved.
Instead such a context would suggest needing to supply
some option in ASFLAGS for the $(ASFLAGS) expansion, an
option appropriate to whatever the assembler command is
[expansion of $(AS)].
===
Mark Millard
markmi at dsl-only.net
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