--- configure.ac (Asterisk 13.20) +++ configure.ac (working copy) @@ -2149,5 +2149,10 @@ -# possible places for oss definitions +# possible places for OSS definitions +# Linux AST_EXT_LIB_CHECK([OSS], [ossaudio], [], [linux/soundcard.h]) +# NetBSD: Search for a symbol like _oss_ioctl, to link its OSS Audio Emulation Library. +AST_EXT_LIB_CHECK([OSS], [ossaudio], [_oss_ioctl], [sys/soundcard.h]) +# FreeBSD AST_EXT_LIB_CHECK([OSS], [ossaudio], [], [sys/soundcard.h]) +# OpenBSD AST_EXT_LIB_CHECK([OSS], [ossaudio], [oss_ioctl_mixer], [soundcard.h])