diff -urN ax25-tools-0.0.8.old/hdlcutil/hdrvcomm.h ax25-tools-0.0.8/hdlcutil/hdrvcomm.h
--- ax25-tools-0.0.8.old/hdlcutil/hdrvcomm.h	2001-04-09 19:10:48.000000000 -0700
+++ ax25-tools-0.0.8/hdlcutil/hdrvcomm.h	2004-01-23 23:51:18.000000000 -0800
@@ -42,7 +42,7 @@
 
 #ifdef HDRVC_KERNEL
 #include <linux/hdlcdrv.h>
-#include <linux/soundmodem.h>
+#include "soundmodem.h"
 #include <linux/baycom.h>
 #endif /* HDRVC_KERNEL */
 
diff -urN ax25-tools-0.0.8.old/hdlcutil/soundmodem.h ax25-tools-0.0.8/hdlcutil/soundmodem.h
--- ax25-tools-0.0.8.old/hdlcutil/soundmodem.h	1969-12-31 16:00:00.000000000 -0800
+++ ax25-tools-0.0.8/hdlcutil/soundmodem.h	2004-01-23 23:49:25.000000000 -0800
@@ -0,0 +1,90 @@
+/*
+ * The Linux soundcard driver for 1200 baud and 9600 baud packet radio
+ * (C) 1996-1998 by Thomas Sailer, HB9JNX/AE4WA
+ */
+
+#ifndef _SOUNDMODEM_H
+#define _SOUNDMODEM_H
+
+/* -------------------------------------------------------------------- */
+/*
+ * structs for the IOCTL commands
+ */
+
+struct sm_debug_data {
+	unsigned int int_rate;
+	unsigned int mod_cycles;
+	unsigned int demod_cycles;
+	unsigned int dma_residue;
+};
+
+struct sm_diag_data {
+	unsigned int mode;
+	unsigned int flags;
+	unsigned int samplesperbit;
+	unsigned int datalen;
+	short *data;
+};
+
+struct sm_mixer_data {
+	unsigned int mixer_type;
+	unsigned int sample_rate;
+	unsigned int bit_rate;
+	unsigned int reg;
+	unsigned int data;
+};
+
+struct sm_config {
+	int hardware;
+	int mode;
+};
+
+struct sm_ioctl {
+	int cmd;
+	union {
+		struct sm_config cfg;
+		struct sm_diag_data diag;	
+		struct sm_mixer_data mix;
+		struct sm_debug_data dbg;
+	} data;
+};
+
+/* -------------------------------------------------------------------- */
+
+/*
+ * diagnose modes
+ */
+#define SM_DIAGMODE_OFF            0
+#define SM_DIAGMODE_INPUT          1
+#define SM_DIAGMODE_DEMOD          2
+#define SM_DIAGMODE_CONSTELLATION  3
+
+/*
+ * diagnose flags
+ */
+#define SM_DIAGFLAG_DCDGATE    (1<<0)
+#define SM_DIAGFLAG_VALID      (1<<1)
+
+/*
+ * mixer types
+ */
+#define SM_MIXER_INVALID       0
+#define SM_MIXER_AD1848        0x10
+#define SM_MIXER_CRYSTAL       0x11
+#define SM_MIXER_CT1335        0x20
+#define SM_MIXER_CT1345        0x21
+#define SM_MIXER_CT1745        0x22
+
+/*
+ * ioctl values
+ */
+#define SMCTL_DIAGNOSE         0x82
+#define SMCTL_GETMIXER         0x83
+#define SMCTL_SETMIXER         0x84
+#define SMCTL_GETDEBUG         0x85
+
+/* -------------------------------------------------------------------- */
+
+#endif /* _SOUNDMODEM_H */
+
+/* --------------------------------------------------------------------- */