> make all-am
> make[1]: Entering directory '/tmp/tmpfs/bcg729-1.0.0/asterisk-g72x-1.3'
> /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I.
> -I/usr/local/include -DG72X_ASTERISK=130 -I"/usr/include"
> -DG72X_BCG729 -Wall -D_GNU_SOURCE -DG72X_9 -O3 -fomit-frame-pointer
> -march= -flto -MT codec_g729_la-codec_g72x.lo -MD -MP -MF
> .deps/codec_g729_la-codec_g72x.Tpo -c -o codec_g729_la-codec_g72x.lo
> `test -f 'codec_g72x.c' || echo './'`codec_g72x.c
> libtool: compile: gcc -DHAVE_CONFIG_H -I. -I/usr/local/include
> -DG72X_ASTERISK=130 -I/usr/include -DG72X_BCG729 -Wall -D_GNU_SOURCE
> -DG72X_9 -O3 -fomit-frame-pointer -march= -flto -MT
> codec_g729_la-codec_g72x.lo -MD -MP -MF
> .deps/codec_g729_la-codec_g72x.Tpo -c codec_g72x.c -fPIC -DPIC -o
> .libs/codec_g729_la-codec_g72x.o
> gcc: error: missing argument to '-march='
> Makefile:641: recipe for target 'codec_g729_la-codec_g72x.lo' failed
> make[1]: *** [codec_g729_la-codec_g72x.lo] Error 1
> make[1]: Leaving directory '/tmp/tmpfs/bcg729-1.0.0/asterisk-g72x-1.3'
> Makefile:416: recipe for target 'all' failed
> make: *** [all] Error 2
>
> I found the following but not having a lot of luck with it:
>
https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=144115
>