Hi, the latest configure automatic detects ALSA headers on the system. But it seems the code requires a specific version of ALSA: gcc -c -Wall -Wno-switch -Wundef -Wsign-compare -Wno-char-subscripts -Wpacked -Wunused-parameter -g -O3 -Demacs -I. -I/workarea/rpm/SOURCES/xemacs-21.5.26/src -DHAVE_CONFIG_H -I/usr/X11R6/include /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c: In function `set_volume': /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:231: error: void value not ignored as it ought to be /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:254: error: `SND_MIXER_SCHN_REAR_CENTER' undeclared (first use in this function) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:254: error: (Each undeclared identifier is reported only once /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:254: error: for each function it appears in.) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:262: error: `SND_MIXER_SCHN_SIDE_LEFT' undeclared (first use in this function) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:266: error: `SND_MIXER_SCHN_SIDE_RIGHT' undeclared (first use in this function) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c: In function `reset_volume': /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:298: error: `SND_MIXER_SCHN_REAR_CENTER' undeclared (first use in this function) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:306: error: `SND_MIXER_SCHN_SIDE_LEFT' undeclared (first use in this function) /workarea/rpm/SOURCES/xemacs-21.5.26/src/alsaplay.c:310: error: `SND_MIXER_SCHN_SIDE_RIGHT' undeclared (first use in this function) make[1]: *** [alsaplay.o] Error 1 I'm trying to compile it on RHEL4u3 which has ALSA 1.0.6: $ rpm -q alsa-lib-devel alsa-lib-devel-1.0.6-5.RHEL4 $ fgrep SND_MIXER_SCH /usr/include/alsa/* /usr/include/alsa/mixer.h: SND_MIXER_SCHN_UNKNOWN = -1, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_FRONT_LEFT = 0, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_FRONT_RIGHT, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_FRONT_CENTER, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_REAR_LEFT, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_REAR_RIGHT, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_WOOFER, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_LAST = 31, /usr/include/alsa/mixer.h: SND_MIXER_SCHN_MONO = SND_MIXER_SCHN_FRONT_LEFT I guess the ALSA autoconfig check needs to check for a minimum version. Regards, Stefan --- Stefan Becker E-Mail: Stefan.Becker(a)nokia.com