tce-load -i 

cd alsa-lib-1.0.28

CFLAGS="-march=i486 -mtune=i686 -Os -pipe" CXXFLAGS="-march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local [--with-configdir=/usr/local/etc/alsa]

find . -name Makefile -type f -exec sed -i 's/-O2//g' {} \;

[will not compile with -lto]

make
sudo make install

ALSA lib pcm_direct.c:1656:(snd1_pcm_direct_parse_open_conf) The field ipc_gid must be a valid group (create group audio)
Playback open error: -22,Invalid argument

Edit /usr/local/share/alsa/alsa.conf group audio -> staff