Merge branch 'release/experimental/1.0.27-1_experimental1'experimental/1.0.27-1_experimental1

14 files changed, 216 insertions, 166 deletions

diff --git a/sanei/Makefile.am b/sanei/Makefile.am
index c1106ae..a197343 100644
--- a/sanei/Makefile.am
+++ b/sanei/Makefile.am
@@ -4,8 +4,8 @@
 ##  This file is part of the "Sane" build infra-structure.  See
 ##  included LICENSE file for license information.
 
-AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_builddir)/include \
- -I$(top_srcdir)/include
+AM_CPPFLAGS += -I. -I$(srcdir) -I$(top_builddir)/include \
+ -I$(top_srcdir)/include $(USB_CFLAGS)
 
 noinst_LTLIBRARIES = libsanei.la
 
diff --git a/sanei/Makefile.in b/sanei/Makefile.in
index 1fba44d..c6fa654 100644
--- a/sanei/Makefile.in
+++ b/sanei/Makefile.in
@@ -83,11 +83,16 @@ subdir = sanei
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(top_srcdir)/mkinstalldirs $(top_srcdir)/depcomp
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/m4/ltoptions.m4 \
+am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \
+	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intlmacosx.m4 \
+	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
+	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/ltoptions.m4 \
 	$(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \
-	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/acinclude.m4 \
-	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/byteorder.m4 \
-	$(top_srcdir)/m4/stdint.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/m4/nls.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/progtest.m4 \
+	$(top_srcdir)/acinclude.m4 $(top_srcdir)/m4/libtool.m4 \
+	$(top_srcdir)/m4/byteorder.m4 $(top_srcdir)/m4/stdint.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
@@ -180,7 +185,11 @@ DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 ALLOCA = @ALLOCA@
 AMTAR = @AMTAR@
+AM_CFLAGS = @AM_CFLAGS@
+AM_CPPFLAGS = @AM_CPPFLAGS@ -I. -I$(srcdir) -I$(top_builddir)/include \
+	-I$(top_srcdir)/include $(USB_CFLAGS)
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_LDFLAGS = @AM_LDFLAGS@
 AR = @AR@
 AS = @AS@
 AUTOCONF = @AUTOCONF@
@@ -201,7 +210,7 @@ CPPFLAGS = @CPPFLAGS@
 CYGPATH_W = @CYGPATH_W@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
-DISTCLEAN_FILES = @DISTCLEAN_FILES@
+DLH = @DLH@
 DLLTOOL = @DLLTOOL@
 DL_LIBS = @DL_LIBS@
 DSYMUTIL = @DSYMUTIL@
@@ -214,34 +223,42 @@ ECHO_T = @ECHO_T@
 EGREP = @EGREP@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FIG2DEV = @FIG2DEV@
+GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
+GMSGFMT = @GMSGFMT@
+GMSGFMT_015 = @GMSGFMT_015@
 GPHOTO2_CPPFLAGS = @GPHOTO2_CPPFLAGS@
 GPHOTO2_LDFLAGS = @GPHOTO2_LDFLAGS@
 GPHOTO2_LIBS = @GPHOTO2_LIBS@
 GREP = @GREP@
+GS = @GS@
 HAVE_GPHOTO2 = @HAVE_GPHOTO2@
 IEEE1284_LIBS = @IEEE1284_LIBS@
-INCLUDES = @INCLUDES@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_LOCKPATH = @INSTALL_LOCKPATH@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
 JPEG_LIBS = @JPEG_LIBS@
 LATEX = @LATEX@
 LD = @LD@
 LDFLAGS = @LDFLAGS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
-LIBUSB_1_0_CFLAGS = @LIBUSB_1_0_CFLAGS@
-LIBUSB_1_0_LIBS = @LIBUSB_1_0_LIBS@
 LIBV4L_CFLAGS = @LIBV4L_CFLAGS@
 LIBV4L_LIBS = @LIBV4L_LIBS@
-LINKER_RPATH = @LINKER_RPATH@
 LIPO = @LIPO@
 LN_S = @LN_S@
 LOCKPATH_GROUP = @LOCKPATH_GROUP@
+LTALLOCA = @LTALLOCA@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
 MAKEINDEX = @MAKEINDEX@
@@ -250,10 +267,10 @@ MANIFEST_TOOL = @MANIFEST_TOOL@
 MATH_LIB = @MATH_LIB@
 MKDIR_P = @MKDIR_P@
 MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
 MSGMERGE = @MSGMERGE@
 NM = @NM@
 NMEDIT = @NMEDIT@
-NUMBER_VERSION = @NUMBER_VERSION@
 OBJDUMP = @OBJDUMP@
 OBJEXT = @OBJEXT@
 OTOOL = @OTOOL@
@@ -266,10 +283,13 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@
 PACKAGE_URL = @PACKAGE_URL@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
+PDFLATEX = @PDFLATEX@
 PKG_CONFIG = @PKG_CONFIG@
 PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
 PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
 PNG_LIBS = @PNG_LIBS@
+POSUB = @POSUB@
+PPMTOGIF = @PPMTOGIF@
 PRELOADABLE_BACKENDS = @PRELOADABLE_BACKENDS@
 PRELOADABLE_BACKENDS_ENABLED = @PRELOADABLE_BACKENDS_ENABLED@
 PTHREAD_LIBS = @PTHREAD_LIBS@
@@ -291,12 +311,16 @@ SYSLOG_LIBS = @SYSLOG_LIBS@
 SYSTEMD_CFLAGS = @SYSTEMD_CFLAGS@
 SYSTEMD_LIBS = @SYSTEMD_LIBS@
 TIFF_LIBS = @TIFF_LIBS@
+USB_CFLAGS = @USB_CFLAGS@
 USB_LIBS = @USB_LIBS@
+USE_NLS = @USE_NLS@
 VERSION = @VERSION@
 V_MAJOR = @V_MAJOR@
 V_MINOR = @V_MINOR@
 V_REV = @V_REV@
 XGETTEXT = @XGETTEXT@
+XGETTEXT_015 = @XGETTEXT_015@
+XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
@@ -352,9 +376,6 @@ target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
-AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_builddir)/include \
- -I$(top_srcdir)/include
-
 noinst_LTLIBRARIES = libsanei.la
 libsanei_la_SOURCES = sanei_ab306.c sanei_constrain_value.c \
 	sanei_init_debug.c sanei_net.c sanei_wire.c \
@@ -445,22 +466,25 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sanei_wire.Plo@am__quote@
 
 .c.o:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
 
 .c.obj:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.obj$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
 
 .c.lo:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.lo$$||'`;\
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
diff --git a/sanei/sanei_DomainOS.c b/sanei/sanei_DomainOS.c
index 5473151..5473151 100755..100644
--- a/sanei/sanei_DomainOS.c
+++ b/sanei/sanei_DomainOS.c
diff --git a/sanei/sanei_DomainOS.h b/sanei/sanei_DomainOS.h
index ff93503..ff93503 100755..100644
--- a/sanei/sanei_DomainOS.h
+++ b/sanei/sanei_DomainOS.h
diff --git a/sanei/sanei_ab306.c b/sanei/sanei_ab306.c
index c663d38..898acf6 100644
--- a/sanei/sanei_ab306.c
+++ b/sanei/sanei_ab306.c
@@ -81,7 +81,7 @@ inb (u_long port)
 #include "../include/sane/sanei.h"
 #include "../include/sane/sanei_ab306.h"
 
-#if (defined(HAVE_IOPERM) || defined(__FreeBSD__)) && !defined(IO_SUPPORT_MISSING)
+#if (defined(HAVE_IOPERM) || defined(__FreeBSD__) || defined(__DragonFly__)) && !defined(IO_SUPPORT_MISSING)
 
 #include <errno.h>
 #include <fcntl.h>
@@ -102,7 +102,7 @@ inb (u_long port)
 #define PORT_DEV	"/dev/port"
 #define AB306_CIO	0x379		/* control i/o port */
 
-#if defined(__FreeBSD__)	
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 static int dev_io_fd = 0;
 #endif
 
@@ -290,7 +290,7 @@ sanei_ab306_open (const char *dev, int *fdp)
 
   status = sanei_ab306_get_io_privilege (i);
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
   status = sanei_ab306_get_io_privilege (i);
   if (status != SANE_STATUS_GOOD)
     return status;
@@ -369,7 +369,7 @@ sanei_ab306_get_io_privilege (int fd)
 {
   if (port[fd].port_fd < 0)
     {
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
       if (dev_io_fd == 0)
 	dev_io_fd = open ("/dev/io", O_RDONLY);
       if (dev_io_fd < 0)
@@ -461,7 +461,6 @@ sanei_ab306_rdata (int fd, int planes, SANE_Byte * buf, int lines, int bpl)
 {
   Port *p = port + fd;
   int lcnt, pcnt, bcnt, xmax;
-  SANE_Byte *lsave_bp;
   int nstat;
 
   DBG(2, "sanei_ab306_rdata: start\n");
@@ -471,7 +470,6 @@ sanei_ab306_rdata (int fd, int planes, SANE_Byte * buf, int lines, int bpl)
   /* the lines-loop: */
   for (lcnt = 0; lcnt < lines; ++lcnt)
     {
-      lsave_bp = buf;
       /* the planes-loop: */
       for (pcnt = 0; pcnt < planes; ++pcnt)
 	{
@@ -520,7 +518,7 @@ sanei_ab306_exit (void)
 	/* power off the scanner: */
 	ab306_outb (port + i, port[i].base + 1, 0x00);
       }
-#if defined(__FreeBSD)
+#if defined(__FreeBSD) || defined(__DragonFly__)
   if (dev_io_fd >0)
     close (dev_io_fd);
 #endif /* defined(__FreeBSD__) */
diff --git a/sanei/sanei_init_debug.c b/sanei/sanei_init_debug.c
index bb5b755..0abb891 100644
--- a/sanei/sanei_init_debug.c
+++ b/sanei/sanei_init_debug.c
@@ -72,7 +72,7 @@
  * instead, so the debugging env var name matches the docs.
  * This is a particular problem in Turkish, where 'i' does
  * not capitalize to 'I' */
-char
+static char
 toupper_ascii (int c)
 {
   if(c > 0x60 && c < 0x7b)
diff --git a/sanei/sanei_ir.c b/sanei/sanei_ir.c
index 42e82ba..47e1e6e 100644
--- a/sanei/sanei_ir.c
+++ b/sanei/sanei_ir.c
@@ -29,7 +29,8 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <values.h>
+#include <float.h>
+#include <limits.h>
 #include <math.h>
 
 #define BACKEND_NAME sanei_ir	/* name of this module for debugging */
diff --git a/sanei/sanei_magic.c b/sanei/sanei_magic.c
index 167d7dd..bfd56cc 100644
--- a/sanei/sanei_magic.c
+++ b/sanei/sanei_magic.c
@@ -710,7 +710,7 @@ sanei_magic_rotate (SANE_Parameters * params, SANE_Byte * buffer,
 
   DBG(10,"sanei_magic_rotate: finish\n");
 
-  return 0;
+  return ret;
 }
 
 SANE_Status
diff --git a/sanei/sanei_pa4s2.c b/sanei/sanei_pa4s2.c
index c15dd5a..d1be0c0 100644
--- a/sanei/sanei_pa4s2.c
+++ b/sanei/sanei_pa4s2.c
@@ -142,7 +142,7 @@ static int sanei_pa4s2_dbg_init_called = SANE_FALSE;
                           {                                              \
                             DBG_INIT();                                  \
                             DBG(6, "%s: interface called for"            \
-                              " the first time\n", __PRETTY_FUNCTION__); \
+                              " the first time\n", __func__); \
                             sanei_pa4s2_dbg_init_called = SANE_TRUE;     \
                           }
 
@@ -309,7 +309,7 @@ pa4s2_init (SANE_Status *status)
 
   if (first_time == SANE_FALSE)
     {
-      DBG (5, "pa4s2_init: sanei already initalized\n");
+      DBG (5, "pa4s2_init: sanei already initialized\n");
       status = SANE_STATUS_GOOD;
       return 0;
     }
diff --git a/sanei/sanei_pp.c b/sanei/sanei_pp.c
index 6146d1e..dec84ee 100644
--- a/sanei/sanei_pp.c
+++ b/sanei/sanei_pp.c
@@ -126,9 +126,7 @@ inb( u_long port )
 #elif defined(HAVE_LIBIEEE1284)
 # include <ieee1284.h>
 #else
-# if defined(__GNUC__)
-#  warning "No I/O support for this architecture!"
-# endif
+# pragma message "No I/O support for this architecture!"
 # define IO_SUPPORT_MISSING
 #endif
 
@@ -697,7 +695,7 @@ pp_init( void )
 #endif
 
 	if( first_time == SANE_FALSE ) {
-		DBG( 5, "pp_init: already initalized\n" );
+		DBG( 5, "pp_init: already initialized\n" );
 		return SANE_STATUS_GOOD;
     }
 
diff --git a/sanei/sanei_scsi.c b/sanei/sanei_scsi.c
index 6d171d3..2413d8f 100644
--- a/sanei/sanei_scsi.c
+++ b/sanei/sanei_scsi.c
@@ -96,7 +96,7 @@
 #elif defined (HAVE__USR_SRC_LINUX_INCLUDE_SCSI_SG_H)
 # define USE LINUX_INTERFACE
 # include "/usr/src/linux/include/scsi/sg.h"
-#elif defined (HAVE_SYS_SCSICMD)
+#elif defined (HAVE_SYS_SCSICMD_H)
 # define USE SCSO_OS5_INTERFACE
 # include <sys/scsi.h>
 # include <sys/scsicmd.h>
@@ -2719,7 +2719,7 @@ sanei_proc_scsi_find_devices (const char *findvendor, const char *findmodel,
 
     int number, i, j, definedd;
     char line[256], dev_name[128], *c1, *c2, ctmp;
-    const char *string;
+    char *string;
     FILE *proc_fp;
     char *end;
     struct
@@ -2818,7 +2818,7 @@ sanei_proc_scsi_find_devices (const char *findvendor, const char *findmodel,
     while (!feof (proc_fp))
       {
 	fgets (line, sizeof (line), proc_fp);
-	string = sanei_config_skip_whitespace (line);
+	string = (char *) sanei_config_skip_whitespace (line);
 
 	while (*string)
 	  {
@@ -2839,7 +2839,7 @@ sanei_proc_scsi_find_devices (const char *findvendor, const char *findmodel,
 		      }
 		    ctmp = *c2;
 		    *c2 = 0;
-		    string = sanei_config_skip_whitespace (string);
+		    string = (char *) sanei_config_skip_whitespace (string);
 
 		    if (param[i].is_int)
 		      {
diff --git a/sanei/sanei_tcp.c b/sanei/sanei_tcp.c
index a57d7c7..87a73d1 100644
--- a/sanei/sanei_tcp.c
+++ b/sanei/sanei_tcp.c
@@ -70,7 +70,7 @@ sanei_tcp_open(const char *host, int port, int *fdp)
 #endif
 
 	DBG_INIT();
-	DBG(1, "%s: host = %s, port = %d\n", __FUNCTION__, host, port);
+	DBG(1, "%s: host = %s, port = %d\n", __func__, host, port);
 
 #ifdef HAVE_WINSOCK2_H
 	err = WSAStartup(MAKEWORD(2, 2), &wsaData);
diff --git a/sanei/sanei_thread.c b/sanei/sanei_thread.c
index 8db4a21..fcf52c1 100644
--- a/sanei/sanei_thread.c
+++ b/sanei/sanei_thread.c
@@ -71,9 +71,6 @@
 #if !defined USE_PTHREAD && !defined HAVE_OS2_H && !defined __BEOS__
 # include <sys/wait.h>
 #endif
-#if defined USE_PTHREAD
-# include <pthread.h>
-#endif
 
 #define BACKEND_NAME sanei_thread      /**< name of this module for debugging */
 
@@ -135,9 +132,9 @@ sanei_thread_set_invalid( SANE_Pid *pid )
 
 /* Return if PID is a valid PID or not. */
 SANE_Bool
-sanei_thread_is_invalid( SANE_Pid pid )
+sanei_thread_is_valid( SANE_Pid pid )
 {
-	SANE_Bool rc = SANE_FALSE;
+	SANE_Bool rc = SANE_TRUE;
 
 #ifdef WIN32
 #ifdef WINPTHREAD_API
@@ -145,10 +142,10 @@ sanei_thread_is_invalid( SANE_Pid pid )
 #else
 	if (pid.p == 0)
 #endif
-	    rc = SANE_TRUE;
+	    rc = SANE_FALSE;
 #else
-	if (pid == -1)
-	    rc = SANE_TRUE;
+	if (pid == (SANE_Pid) -1)
+	    rc = SANE_FALSE;
 #endif
 
 	return rc;
@@ -491,7 +488,7 @@ sanei_thread_waitpid( SANE_Pid pid, int *status )
 #else
 	int ls;
 #endif
-	SANE_Pid result;
+	SANE_Pid result = pid;
 	int stat;
 
 	stat = 0;
diff --git a/sanei/sanei_usb.c b/sanei/sanei_usb.c
index f210d4f..e4b23dc 100644
--- a/sanei/sanei_usb.c
+++ b/sanei/sanei_usb.c
@@ -62,31 +62,22 @@
 #include <dirent.h>
 #include <time.h>
 
-/* for debug messages */
-#if __STDC_VERSION__ < 199901L
-# if __GNUC__ >= 2
-#  define __func__ __FUNCTION__
-# else
-#  define __func__ "<unknown>"
-# endif
-#endif
-
 
 #ifdef HAVE_RESMGR
 #include <resmgr.h>
 #endif
 
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
 #ifdef HAVE_LUSB0_USB_H
 #include <lusb0_usb.h>
 #else
 #include <usb.h>
 #endif
-#endif /* HAVE_LIBUSB */
+#endif /* HAVE_LIBUSB_LEGACY */
 
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
 #include <libusb.h>
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
 #ifdef HAVE_USBCALLS
 #include <usb.h>
@@ -156,14 +147,14 @@ typedef struct
   SANE_Int interface_nr;
   SANE_Int alt_setting;
   SANE_Int missing;
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
   usb_dev_handle *libusb_handle;
   struct usb_device *libusb_device;
-#endif /* HAVE_LIBUSB */
-#ifdef HAVE_LIBUSB_1_0
+#endif /* HAVE_LIBUSB_LEGACY */
+#ifdef HAVE_LIBUSB
   libusb_device *lu_device;
   libusb_device_handle *lu_handle;
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 }
 device_list_type;
 
@@ -183,13 +174,13 @@ static int device_number=0;
  * count number of time sanei_usb has been initialized */
 static int initialized=0;
 
-#if defined(HAVE_LIBUSB) || defined(HAVE_LIBUSB_1_0)
+#if defined(HAVE_LIBUSB_LEGACY) || defined(HAVE_LIBUSB)
 static int libusb_timeout = 30 * 1000;	/* 30 seconds */
-#endif /* HAVE_LIBUSB */
+#endif /* HAVE_LIBUSB_LEGACY */
 
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
 static libusb_context *sanei_usb_ctx;
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
 #if defined (__linux__)
 /* From /usr/src/linux/driver/usb/scanner.h */
@@ -266,7 +257,7 @@ print_buffer (const SANE_Byte * buffer, SANE_Int size)
     }
 }
 
-#if !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0)
+#if !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB)
 static void
 kernel_get_vendor_product (int fd, const char *name, int *vendorID, int *productID)
 {
@@ -340,7 +331,7 @@ kernel_get_vendor_product (int fd, const char *name, int *vendorID, int *product
 #endif /* defined (__linux__), defined(__BEOS__), ... */
   /* put more os-dependant stuff ... */
 }
-#endif /* !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0) */
+#endif /* !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB) */
 
 /**
  * store the given device in device list if it isn't already
@@ -366,10 +357,10 @@ store_device (device_list_type device)
           * Need to update the LibUSB device pointer, since it might
           * have changed after the latest USB scan.
           */
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
           devices[i].libusb_device = device.libusb_device;
 #endif
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
           devices[i].lu_device = device.lu_device;
 #endif
 
@@ -408,7 +399,7 @@ store_device (device_list_type device)
   devices[pos].open = SANE_FALSE;
 }
 
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
 static char *
 sanei_libusb_strerror (int errcode)
 {
@@ -462,14 +453,14 @@ sanei_libusb_strerror (int errcode)
 	return "Unknown libusb-1.0 error code";
     }
 }
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
 void
 sanei_usb_init (void)
 {
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
   int ret;
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
   DBG_INIT ();
 #ifdef DBG_LEVEL
@@ -483,18 +474,18 @@ sanei_usb_init (void)
     memset (devices, 0, sizeof (devices));
 
   /* initialize USB with old libusb library */
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
   DBG (4, "%s: Looking for libusb devices\n", __func__);
   usb_init ();
 #ifdef DBG_LEVEL
   if (DBG_LEVEL > 4)
     usb_set_debug (255);
 #endif /* DBG_LEVEL */
-#endif /* HAVE_LIBUSB */
+#endif /* HAVE_LIBUSB_LEGACY */
 
 
   /* initialize USB using libusb-1.0 */
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
   if (!sanei_usb_ctx)
     {
       DBG (4, "%s: initializing libusb-1.0\n", __func__);
@@ -511,9 +502,9 @@ sanei_usb_init (void)
 	libusb_set_debug (sanei_usb_ctx, 3);
 #endif /* DBG_LEVEL */
     }
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
-#if !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0)
+#if !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB)
   DBG (4, "%s: SANE is built without support for libusb\n", __func__);
 #endif
 
@@ -553,7 +544,7 @@ int i;
               devices[i].devname=NULL;
             }
         }
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
       if (sanei_usb_ctx)
         {
           libusb_exit (sanei_usb_ctx);
@@ -643,7 +634,7 @@ static void usbcall_scan_devices(void)
 }
 #endif /* HAVE_USBCALLS */
 
-#if !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0)
+#if !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB)
 /** scan for devices using kernel device.
  * Check for devices using kernel device
  */
@@ -742,9 +733,9 @@ static void kernel_scan_devices(void)
       closedir (dir);
     }
 }
-#endif /* !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0) */
+#endif /* !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB) */
 
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
 /** scan for devices using old libusb
  * Check for devices using 0.1.x libusb
  */
@@ -855,9 +846,9 @@ static void libusb_scan_devices(void)
 	}
     }
 }
-#endif /* HAVE_LIBUSB */
+#endif /* HAVE_LIBUSB_LEGACY */
 
-#ifdef HAVE_LIBUSB_1_0
+#ifdef HAVE_LIBUSB
 /** scan for devices using libusb
  * Check for devices using libusb-1.0
  */
@@ -1031,7 +1022,7 @@ static void libusb_scan_devices(void)
   libusb_free_device_list (devlist, 1);
 
 }
-#endif /* HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB */
 
 
 void
@@ -1057,11 +1048,11 @@ sanei_usb_scan_devices (void)
     }
 
   /* Check for devices using the kernel scanner driver */
-#if !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0)
+#if !defined(HAVE_LIBUSB_LEGACY) && !defined(HAVE_LIBUSB)
   kernel_scan_devices();
 #endif
 
-#if defined(HAVE_LIBUSB) || defined(HAVE_LIBUSB_1_0)
+#if defined(HAVE_LIBUSB_LEGACY) || defined(HAVE_LIBUSB)
   /* Check for devices using libusb (old or new)*/
   libusb_scan_devices();
 #endif
@@ -1308,7 +1299,6 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
 {
   int devcount;
   SANE_Bool found = SANE_FALSE;
-  int c, i, a;
 
   DBG (5, "sanei_usb_open: trying to open device `%s'\n", devname);
   if (!dn)
@@ -1341,10 +1331,11 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
 
   if (devices[devcount].method == sanei_usb_method_libusb)
     {
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
       struct usb_device *dev;
       struct usb_interface_descriptor *interface;
       int result, num;
+      int c, i, a;
 
       devices[devcount].libusb_handle =
 	usb_open (devices[devcount].libusb_device);
@@ -1600,13 +1591,14 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
 	    }
 	}
 
-#elif defined(HAVE_LIBUSB_1_0) /* libusb-1.0 */
+#elif defined(HAVE_LIBUSB) /* libusb-1.0 */
 
       int config;
       libusb_device *dev;
       struct libusb_device_descriptor desc;
       struct libusb_config_descriptor *config0;
       int result, num;
+      int c, i, a;
 
       dev = devices[devcount].lu_device;
 
@@ -1902,11 +1894,11 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
 	  libusb_free_config_descriptor (config);
 	}
 
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
       DBG (1, "sanei_usb_open: can't open device `%s': "
 	   "libusb support missing\n", devname);
       return SANE_STATUS_UNSUPPORTED;
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     }
   else if (devices[devcount].method == sanei_usb_method_scanner_driver)
     {
@@ -2108,6 +2100,17 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
 void
 sanei_usb_close (SANE_Int dn)
 {
+  char *env;
+  int workaround = 0;
+
+  DBG (5, "sanei_usb_close: evaluating environment variable SANE_USB_WORKAROUND\n");
+  env = getenv ("SANE_USB_WORKAROUND");
+  if (env)
+    {
+      workaround = atoi(env);
+      DBG (5, "sanei_usb_close: workaround: %d\n", workaround);
+    }
+
   DBG (5, "sanei_usb_close: closing device %d\n", dn);
   if (dn >= device_number || dn < 0)
     {
@@ -2133,31 +2136,37 @@ sanei_usb_close (SANE_Int dn)
 #endif
     }
   else
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       /* This call seems to be required by Linux xhci driver
        * even though it should be a no-op. Without it, the
        * host or driver does not reset it's data toggle bit.
        * We intentionally ignore the return val */
-      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+      if (workaround)
+        {
+          sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+        }
 
       usb_release_interface (devices[dn].libusb_handle,
 			     devices[dn].interface_nr);
       usb_close (devices[dn].libusb_handle);
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       /* This call seems to be required by Linux xhci driver
        * even though it should be a no-op. Without it, the
        * host or driver does not reset it's data toggle bit.
        * We intentionally ignore the return val */
-      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+      if (workaround)
+        {
+          sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+        }
 
       libusb_release_interface (devices[dn].lu_handle,
 				devices[dn].interface_nr);
       libusb_close (devices[dn].lu_handle);
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     DBG (1, "sanei_usb_close: libusb support missing\n");
 #endif
   devices[dn].open = SANE_FALSE;
@@ -2165,19 +2174,28 @@ sanei_usb_close (SANE_Int dn)
 }
 
 void
-sanei_usb_set_timeout (SANE_Int timeout)
+sanei_usb_set_timeout (SANE_Int __sane_unused__ timeout)
 {
-#if defined(HAVE_LIBUSB) || defined(HAVE_LIBUSB_1_0)
+#if defined(HAVE_LIBUSB_LEGACY) || defined(HAVE_LIBUSB)
   libusb_timeout = timeout;
 #else
   DBG (1, "sanei_usb_set_timeout: libusb support missing\n");
-#endif /* HAVE_LIBUSB || HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB_LEGACY || HAVE_LIBUSB */
 }
 
 SANE_Status
 sanei_usb_clear_halt (SANE_Int dn)
 {
-  int ret;
+  char *env;
+  int workaround = 0;
+
+  DBG (5, "sanei_usb_clear_halt: evaluating environment variable SANE_USB_WORKAROUND\n");
+  env = getenv ("SANE_USB_WORKAROUND");
+  if (env)
+    {
+      workaround = atoi(env);
+      DBG (5, "sanei_usb_clear_halt: workaround: %d\n", workaround);
+    }
 
   if (dn >= device_number || dn < 0)
     {
@@ -2185,13 +2203,17 @@ sanei_usb_clear_halt (SANE_Int dn)
       return SANE_STATUS_INVAL;
     }
 
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
+  int ret;
 
   /* This call seems to be required by Linux xhci driver
    * even though it should be a no-op. Without it, the
    * host or driver does not send the clear to the device.
    * We intentionally ignore the return val */
-  sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+  if (workaround)
+    {
+      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+    }
 
   ret = usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
   if (ret){
@@ -2205,13 +2227,17 @@ sanei_usb_clear_halt (SANE_Int dn)
     return SANE_STATUS_INVAL;
   }
 
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
+  int ret;
 
   /* This call seems to be required by Linux xhci driver
    * even though it should be a no-op. Without it, the
    * host or driver does not send the clear to the device.
    * We intentionally ignore the return val */
-  sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+  if (workaround)
+    {
+      sanei_usb_set_altinterface (dn, devices[dn].alt_setting);
+    }
 
   ret = libusb_clear_halt (devices[dn].lu_handle, devices[dn].bulk_in_ep);
   if (ret){
@@ -2224,17 +2250,17 @@ sanei_usb_clear_halt (SANE_Int dn)
     DBG (1, "sanei_usb_clear_halt: BULK_OUT ret=%d\n", ret);
     return SANE_STATUS_INVAL;
   }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   DBG (1, "sanei_usb_clear_halt: libusb support missing\n");
-#endif /* HAVE_LIBUSB || HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB_LEGACY || HAVE_LIBUSB */
 
   return SANE_STATUS_GOOD;
 }
 
 SANE_Status
-sanei_usb_reset (SANE_Int dn)
+sanei_usb_reset (SANE_Int __sane_unused__ dn)
 {
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
   int ret;
 
   ret = usb_reset (devices[dn].libusb_handle);
@@ -2243,7 +2269,7 @@ sanei_usb_reset (SANE_Int dn)
     return SANE_STATUS_INVAL;
   }
 
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
   int ret;
 
   ret = libusb_reset_device (devices[dn].lu_handle);
@@ -2252,9 +2278,9 @@ sanei_usb_reset (SANE_Int dn)
     return SANE_STATUS_INVAL;
   }
 
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   DBG (1, "sanei_usb_reset: libusb support missing\n");
-#endif /* HAVE_LIBUSB || HAVE_LIBUSB_1_0 */
+#endif /* HAVE_LIBUSB_LEGACY || HAVE_LIBUSB */
 
   return SANE_STATUS_GOOD;
 }
@@ -2287,7 +2313,7 @@ sanei_usb_read_bulk (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 	     strerror (errno));
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       if (devices[dn].bulk_in_ep)
 	{
@@ -2306,14 +2332,14 @@ sanei_usb_read_bulk (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       if (devices[dn].bulk_in_ep)
 	{
-	  int ret;
+	  int ret, rsize;
 	  ret = libusb_bulk_transfer (devices[dn].lu_handle,
 				      devices[dn].bulk_in_ep, buffer,
-				      (int) *size, (int *) &read_size,
+				      (int) *size, &rsize,
 				      libusb_timeout);
 
 	  if (ret < 0)
@@ -2323,6 +2349,10 @@ sanei_usb_read_bulk (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 
 	      read_size = -1;
 	    }
+	  else
+	    {
+	      read_size = rsize;
+	    }
 	}
       else
 	{
@@ -2331,12 +2361,12 @@ sanei_usb_read_bulk (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_read_bulk: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB */
+#endif /* not HAVE_LIBUSB_LEGACY */
   else if (devices[dn].method == sanei_usb_method_usbcalls)
   {
 #ifdef HAVE_USBCALLS
@@ -2382,10 +2412,10 @@ sanei_usb_read_bulk (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 
   if (read_size < 0)
     {
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
       if (devices[dn].method == sanei_usb_method_libusb)
 	usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_in_ep);
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
       if (devices[dn].method == sanei_usb_method_libusb)
 	libusb_clear_halt (devices[dn].lu_handle, devices[dn].bulk_in_ep);
 #endif
@@ -2437,7 +2467,7 @@ sanei_usb_write_bulk (SANE_Int dn, const SANE_Byte * buffer, size_t * size)
 	     strerror (errno));
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       if (devices[dn].bulk_out_ep)
 	{
@@ -2456,7 +2486,7 @@ sanei_usb_write_bulk (SANE_Int dn, const SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       if (devices[dn].bulk_out_ep)
 	{
@@ -2464,7 +2494,7 @@ sanei_usb_write_bulk (SANE_Int dn, const SANE_Byte * buffer, size_t * size)
 	  int trans_bytes;
 	  ret = libusb_bulk_transfer (devices[dn].lu_handle,
 				      devices[dn].bulk_out_ep,
-				      buffer,
+				      (unsigned char *) buffer,
 				      (int) *size, &trans_bytes,
 				      libusb_timeout);
 	  if (ret < 0)
@@ -2484,12 +2514,12 @@ sanei_usb_write_bulk (SANE_Int dn, const SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_write_bulk: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else if (devices[dn].method == sanei_usb_method_usbcalls)
   {
 #ifdef HAVE_USBCALLS
@@ -2537,10 +2567,10 @@ sanei_usb_write_bulk (SANE_Int dn, const SANE_Byte * buffer, size_t * size)
   if (write_size < 0)
     {
       *size = 0;
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
       if (devices[dn].method == sanei_usb_method_libusb)
 	usb_clear_halt (devices[dn].libusb_handle, devices[dn].bulk_out_ep);
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
       if (devices[dn].method == sanei_usb_method_libusb)
 	libusb_clear_halt (devices[dn].lu_handle, devices[dn].bulk_out_ep);
 #endif
@@ -2616,7 +2646,7 @@ sanei_usb_control_msg (SANE_Int dn, SANE_Int rtype, SANE_Int req,
 #endif /* not __linux__ */
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       int result;
 
@@ -2633,7 +2663,7 @@ sanei_usb_control_msg (SANE_Int dn, SANE_Int rtype, SANE_Int req,
 	print_buffer (data, len);
       return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       int result;
 
@@ -2650,12 +2680,12 @@ sanei_usb_control_msg (SANE_Int dn, SANE_Int rtype, SANE_Int req,
 	print_buffer (data, len);
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0*/
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB*/
     {
       DBG (1, "sanei_usb_control_msg: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else if (devices[dn].method == sanei_usb_method_usbcalls)
      {
 #ifdef HAVE_USBCALLS
@@ -2692,7 +2722,7 @@ SANE_Status
 sanei_usb_read_int (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 {
   ssize_t read_size = 0;
-#if defined(HAVE_LIBUSB) || defined(HAVE_LIBUSB_1_0)
+#if defined(HAVE_LIBUSB_LEGACY) || defined(HAVE_LIBUSB)
   SANE_Bool stalled = SANE_FALSE;
 #endif
 
@@ -2717,7 +2747,7 @@ sanei_usb_read_int (SANE_Int dn, SANE_Byte * buffer, size_t * size)
       return SANE_STATUS_INVAL;
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       if (devices[dn].int_in_ep)
 	{
@@ -2739,7 +2769,7 @@ sanei_usb_read_int (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       if (devices[dn].int_in_ep)
 	{
@@ -2764,12 +2794,12 @@ sanei_usb_read_int (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 	  return SANE_STATUS_INVAL;
 	}
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_read_int: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else if (devices[dn].method == sanei_usb_method_usbcalls)
     {
 #ifdef HAVE_USBCALLS
@@ -2808,11 +2838,11 @@ sanei_usb_read_int (SANE_Int dn, SANE_Byte * buffer, size_t * size)
 
   if (read_size < 0)
     {
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
       if (devices[dn].method == sanei_usb_method_libusb)
         if (stalled)
 	  usb_clear_halt (devices[dn].libusb_handle, devices[dn].int_in_ep);
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
       if (devices[dn].method == sanei_usb_method_libusb)
         if (stalled)
 	  libusb_clear_halt (devices[dn].lu_handle, devices[dn].int_in_ep);
@@ -2858,7 +2888,7 @@ sanei_usb_set_configuration (SANE_Int dn, SANE_Int configuration)
 #endif /* not __linux__ */
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       int result;
 
@@ -2872,7 +2902,7 @@ sanei_usb_set_configuration (SANE_Int dn, SANE_Int configuration)
 	}
       return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       int result;
 
@@ -2885,12 +2915,12 @@ sanei_usb_set_configuration (SANE_Int dn, SANE_Int configuration)
 	}
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_set_configuration: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else
     {
       DBG (1,
@@ -2928,7 +2958,7 @@ sanei_usb_claim_interface (SANE_Int dn, SANE_Int interface_number)
 #endif /* not __linux__ */
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       int result;
 
@@ -2941,7 +2971,7 @@ sanei_usb_claim_interface (SANE_Int dn, SANE_Int interface_number)
 	}
       return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       int result;
 
@@ -2954,12 +2984,12 @@ sanei_usb_claim_interface (SANE_Int dn, SANE_Int interface_number)
 	}
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_claim_interface: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else
     {
       DBG (1, "sanei_usb_claim_interface: access method %d not implemented\n",
@@ -2995,7 +3025,7 @@ sanei_usb_release_interface (SANE_Int dn, SANE_Int interface_number)
 #endif /* not __linux__ */
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       int result;
 
@@ -3008,7 +3038,7 @@ sanei_usb_release_interface (SANE_Int dn, SANE_Int interface_number)
 	}
       return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       int result;
 
@@ -3021,12 +3051,12 @@ sanei_usb_release_interface (SANE_Int dn, SANE_Int interface_number)
 	}
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_release_interface: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else
     {
       DBG (1,
@@ -3061,7 +3091,7 @@ sanei_usb_set_altinterface (SANE_Int dn, SANE_Int alternate)
 #endif /* not __linux__ */
     }
   else if (devices[dn].method == sanei_usb_method_libusb)
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
       int result;
 
@@ -3074,7 +3104,7 @@ sanei_usb_set_altinterface (SANE_Int dn, SANE_Int alternate)
 	}
       return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       int result;
 
@@ -3088,12 +3118,12 @@ sanei_usb_set_altinterface (SANE_Int dn, SANE_Int alternate)
 	}
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_set_altinterface: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
   else
     {
       DBG (1,
@@ -3104,7 +3134,9 @@ sanei_usb_set_altinterface (SANE_Int dn, SANE_Int alternate)
 }
 
 extern SANE_Status
-sanei_usb_get_descriptor( SANE_Int dn, struct sanei_usb_dev_descriptor *desc )
+sanei_usb_get_descriptor( SANE_Int dn,
+                          struct sanei_usb_dev_descriptor __sane_unused__
+                          *desc )
 {
   if (dn >= device_number || dn < 0)
     {
@@ -3115,7 +3147,7 @@ sanei_usb_get_descriptor( SANE_Int dn, struct sanei_usb_dev_descriptor *desc )
     }
 
   DBG (5, "sanei_usb_get_descriptor\n");
-#ifdef HAVE_LIBUSB
+#ifdef HAVE_LIBUSB_LEGACY
     {
 	  struct usb_device_descriptor *usb_descr;
 
@@ -3130,7 +3162,7 @@ sanei_usb_get_descriptor( SANE_Int dn, struct sanei_usb_dev_descriptor *desc )
 	  desc->max_packet_size = usb_descr->bMaxPacketSize0;
 	  return SANE_STATUS_GOOD;
     }
-#elif defined(HAVE_LIBUSB_1_0)
+#elif defined(HAVE_LIBUSB)
     {
       struct libusb_device_descriptor lu_desc;
       int ret;
@@ -3155,10 +3187,10 @@ sanei_usb_get_descriptor( SANE_Int dn, struct sanei_usb_dev_descriptor *desc )
       desc->max_packet_size = lu_desc.bMaxPacketSize0;
       return SANE_STATUS_GOOD;
     }
-#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#else /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
     {
       DBG (1, "sanei_usb_get_descriptor: libusb support missing\n");
       return SANE_STATUS_UNSUPPORTED;
     }
-#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+#endif /* not HAVE_LIBUSB_LEGACY && not HAVE_LIBUSB */
 }