Mercurial > ecos

changeset 351:58836890b2a0

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Only build this code if the Linux system provides the required support
author bartv
date Mon, 23 Sep 2002 20:10:28 +0000
parents 60857f22ba51
children 1f5fe8f482d9
files packages/io/usb/slave/current/ChangeLog packages/io/usb/slave/current/host/configure packages/io/usb/slave/current/host/configure.in
diffstat 3 files changed, 238 insertions(+), 84 deletions(-) [+]
line wrap: on
line diff
--- a/packages/io/usb/slave/current/ChangeLog
+++ b/packages/io/usb/slave/current/ChangeLog
@@ -1,3 +1,8 @@
+2002-09-23  Bart Veer  <bartv@ecoscentric.com>
+
+	* host/configure.in:
+	Only build if the required Linux kernel support is present.
+
 2002-09-21  Bart Veer  <bartv@ecoscentric.com>
 
 	* host/usbhost.c:
--- a/packages/io/usb/slave/current/host/configure
+++ b/packages/io/usb/slave/current/host/configure
@@ -853,20 +853,13 @@ case "${host}" in
     * ) SUPPORTED="no"
 esac
 
-
-if test "${SUPPORTED}" = "yes"; then
-  SUPPORTED_TRUE=
-  SUPPORTED_FALSE='#'
-else
-  SUPPORTED_TRUE='#'
-  SUPPORTED_FALSE=
-fi
-
-if test "${SUPPORTED}" = "yes" ; then
+if test "${SUPPORTED}" = "no" ; then
+    echo "configure: warning: USB testing is only supported on Linux hosts" 1>&2
+else   
     # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:870: checking for $ac_word" >&5
+echo "configure:863: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -896,7 +889,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:900: checking for $ac_word" >&5
+echo "configure:893: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -947,7 +940,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:951: checking for $ac_word" >&5
+echo "configure:944: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -979,7 +972,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:983: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:976: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -990,12 +983,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 994 "configure"
+#line 987 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:999: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:992: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1021,12 +1014,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1025: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1018: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1030: checking whether we are using GNU C" >&5
+echo "configure:1023: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1035,7 +1028,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1039: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1032: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1054,7 +1047,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:1058: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:1051: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1090,7 +1083,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1094: checking for $ac_word" >&5
+echo "configure:1087: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1122,7 +1115,7 @@ test -n "$CXX" || CXX="gcc"
 
 
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1126: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
+echo "configure:1119: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1133,12 +1126,12 @@ cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1137 "configure"
+#line 1130 "configure"
 #include "confdefs.h"
 
 int main(){return(0);}
 EOF
-if { (eval echo configure:1142: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1135: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cxx_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1164,12 +1157,12 @@ if test $ac_cv_prog_cxx_works = no; then
   { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1168: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1161: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
-echo "configure:1173: checking whether we are using GNU C++" >&5
+echo "configure:1166: checking whether we are using GNU C++" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1178,7 +1171,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1182: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:1175: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gxx=yes
 else
   ac_cv_prog_gxx=no
@@ -1197,7 +1190,7 @@ ac_test_CXXFLAGS="${CXXFLAGS+set}"
 ac_save_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS=
 echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6
-echo "configure:1201: checking whether ${CXX-g++} accepts -g" >&5
+echo "configure:1194: checking whether ${CXX-g++} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1238,7 +1231,7 @@ for ac_declaration in \
    'void exit (int);'
 do
   cat > conftest.$ac_ext <<EOF
-#line 1242 "configure"
+#line 1235 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 $ac_declaration
@@ -1246,7 +1239,7 @@ int main() {
 exit (42);
 ; return 0; }
 EOF
-if { (eval echo configure:1250: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1243: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   :
 else
   echo "configure: failed program was:" >&5
@@ -1256,14 +1249,14 @@ else
 fi
 rm -f conftest*
   cat > conftest.$ac_ext <<EOF
-#line 1260 "configure"
+#line 1253 "configure"
 #include "confdefs.h"
 $ac_declaration
 int main() {
 exit (42);
 ; return 0; }
 EOF
-if { (eval echo configure:1267: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1260: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   break
 else
@@ -1280,7 +1273,7 @@ fi
 
 
     echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1284: checking whether ln -s works" >&5
+echo "configure:1277: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1301,13 +1294,13 @@ else
 fi
 
     echo $ac_n "checking for object suffix""... $ac_c" 1>&6
-echo "configure:1305: checking for object suffix" >&5
+echo "configure:1298: checking for object suffix" >&5
 if eval "test \"`echo '$''{'ac_cv_objext'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   rm -f conftest*
 echo 'int i = 1;' > conftest.$ac_ext
-if { (eval echo configure:1311: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1304: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   for ac_file in conftest.*; do
     case $ac_file in
     *.c) ;;
@@ -1325,12 +1318,12 @@ OBJEXT=$ac_cv_objext
 ac_objext=$ac_cv_objext
 
     echo $ac_n "checking for Cygwin environment""... $ac_c" 1>&6
-echo "configure:1329: checking for Cygwin environment" >&5
+echo "configure:1322: checking for Cygwin environment" >&5
 if eval "test \"`echo '$''{'ac_cv_cygwin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1334 "configure"
+#line 1327 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1341,7 +1334,7 @@ int main() {
 return __CYGWIN__;
 ; return 0; }
 EOF
-if { (eval echo configure:1345: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1338: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_cygwin=yes
 else
@@ -1358,19 +1351,19 @@ echo "$ac_t""$ac_cv_cygwin" 1>&6
 CYGWIN=
 test "$ac_cv_cygwin" = yes && CYGWIN=yes
 echo $ac_n "checking for mingw32 environment""... $ac_c" 1>&6
-echo "configure:1362: checking for mingw32 environment" >&5
+echo "configure:1355: checking for mingw32 environment" >&5
 if eval "test \"`echo '$''{'ac_cv_mingw32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1367 "configure"
+#line 1360 "configure"
 #include "confdefs.h"
 
 int main() {
 return __MINGW32__;
 ; return 0; }
 EOF
-if { (eval echo configure:1374: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1367: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_mingw32=yes
 else
@@ -1389,7 +1382,7 @@ test "$ac_cv_mingw32" = yes && MINGW32=y
 
 
 echo $ac_n "checking for executable suffix""... $ac_c" 1>&6
-echo "configure:1393: checking for executable suffix" >&5
+echo "configure:1386: checking for executable suffix" >&5
 if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1399,7 +1392,7 @@ else
   rm -f conftest*
   echo 'int main () { return 0; }' > conftest.$ac_ext
   ac_cv_exeext=
-  if { (eval echo configure:1403: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+  if { (eval echo configure:1396: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
     for file in conftest.*; do
       case $file in
       *.c | *.o | *.obj) ;;
@@ -1437,7 +1430,7 @@ ac_exeext=$EXEEXT
     
 
     echo $ac_n "checking "for Visual C++"""... $ac_c" 1>&6
-echo "configure:1441: checking "for Visual C++"" >&5
+echo "configure:1434: checking "for Visual C++"" >&5
     MSVC="no";
     if test "${CC}" = "cl" ; then
        MSVC="yes"
@@ -1476,7 +1469,7 @@ fi
     
 
     echo $ac_n "checking "the default compiler flags"""... $ac_c" 1>&6
-echo "configure:1480: checking "the default compiler flags"" >&5
+echo "configure:1473: checking "the default compiler flags"" >&5
 
             ecosflags_enable_debug="no"
     # Check whether --enable-debug or --disable-debug was given.
@@ -1535,6 +1528,40 @@ fi
 
     echo "$ac_t""done" 1>&6
 
+    
+
+        package_dir=`cd ${srcdir} && /bin/pwd`
+    PACKAGE_VERSION=`dirname ${package_dir}`
+    PACKAGE_VERSION=`basename ${PACKAGE_VERSION}`
+
+                    package_dir=`dirname ${package_dir}`
+    package_dir=`dirname ${package_dir}`
+
+    possibles="${package_dir}/.. ${package_dir}/../.. ${package_dir}/../../.. ${package_dir}/../../../.."
+    possibles="${possibles} ${package_dir}/../../../../.. ${package_dir}/../../../../../.." 
+    
+    repository_root=""
+    for i in ${possibles}; do
+        if test -d "$i/"acsupport""; then
+            repository_root=$i
+            break
+        fi
+    done
+
+    if test "${repository_root}" = "" ; then
+        { echo "configure: error: Failed to identify this package's position within the eCos repository" 1>&2; exit 1; }
+    fi
+        ECOS_REPOSITORY=`cd "${repository_root}/packages/pkgconf/.." && /bin/pwd`
+
+        PACKAGE_DIR=`echo ${package_dir} | sed -e "s:${ECOS_REPOSITORY}/::"`
+
+                        PACKAGE_INSTALL="${PACKAGE_DIR}/${PACKAGE_VERSION}"
+    
+    
+    
+    
+    
+
 
     
 
@@ -1549,7 +1576,7 @@ fi
 
                 
     echo $ac_n "checking for Tcl version""... $ac_c" 1>&6
-echo "configure:1553: checking for Tcl version" >&5
+echo "configure:1580: checking for Tcl version" >&5
     # Check whether --with-tcl-version or --without-tcl-version was given.
 if test "${with_tcl_version+set}" = set; then
   withval="$with_tcl_version"
@@ -1571,7 +1598,7 @@ fi
     echo "$ac_t""${ecos_tcl_version}" 1>&6
 
         echo $ac_n "checking for Tcl installation""... $ac_c" 1>&6
-echo "configure:1575: checking for Tcl installation" >&5
+echo "configure:1602: checking for Tcl installation" >&5
 
     # Check whether --with-tcl-header or --without-tcl-header was given.
 if test "${with_tcl_header+set}" = set; then
@@ -1699,43 +1726,150 @@ fi
 
                 if test "${TK_MAJOR_VERSION}" = "8" ; then
         if test ${TK_MINOR_VERSION} -lt 2 ; then
-            { echo "configure: error: The USB testing support requires at least version 8.2 of Tcl/Tk" 1>&2; exit 1; }
+	    echo "configure: warning: Version 8.2 or greater of Tcl/Tk is required" 1>&2
+	    SUPPORTED="no"
         fi
     fi
-    
-
-        package_dir=`cd ${srcdir} && /bin/pwd`
-    PACKAGE_VERSION=`dirname ${package_dir}`
-    PACKAGE_VERSION=`basename ${PACKAGE_VERSION}`
-
-                    package_dir=`dirname ${package_dir}`
-    package_dir=`dirname ${package_dir}`
+    if test "${SUPPORTED}" = "yes" ; then
+        echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
+echo "configure:1736: checking how to run the C preprocessor" >&5
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    # This must be in double quotes, not single quotes, because CPP may get
+  # substituted into the Makefile and "${CC-cc}" will confuse make.
+  CPP="${CC-cc} -E"
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp.
+  cat > conftest.$ac_ext <<EOF
+#line 1751 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1757: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP="${CC-cc} -E -traditional-cpp"
+  cat > conftest.$ac_ext <<EOF
+#line 1768 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1774: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP="${CC-cc} -nologo -E"
+  cat > conftest.$ac_ext <<EOF
+#line 1785 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1791: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP=/lib/cpp
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+  ac_cv_prog_CPP="$CPP"
+fi
+  CPP="$ac_cv_prog_CPP"
+else
+  ac_cv_prog_CPP="$CPP"
+fi
+echo "$ac_t""$CPP" 1>&6
 
-    possibles="${package_dir}/.. ${package_dir}/../.. ${package_dir}/../../.. ${package_dir}/../../../.."
-    possibles="${possibles} ${package_dir}/../../../../.. ${package_dir}/../../../../../.." 
-    
-    repository_root=""
-    for i in ${possibles}; do
-        if test -d "$i/"acsupport""; then
-            repository_root=$i
-            break
-        fi
-    done
+for ac_hdr in "linux/usb.h" "linux/usbdevice_fs.h"
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:1819: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1824 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1829: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+SUPPORTED="no"
+fi
+done
 
-    if test "${repository_root}" = "" ; then
-        { echo "configure: error: Failed to identify this package's position within the eCos repository" 1>&2; exit 1; }
+        if test "${SUPPORTED}" = "no" ; then
+	    echo "configure: warning: Required Linux kernel functionality does not appear to be available" 1>&2
+        fi
     fi
-        ECOS_REPOSITORY=`cd "${repository_root}/packages/pkgconf/.." && /bin/pwd`
-
-        PACKAGE_DIR=`echo ${package_dir} | sed -e "s:${ECOS_REPOSITORY}/::"`
+fi
+	
+if test "${SUPPORTED}" = "no" ; then
+    echo "configure: warning: The USB testing support cannot be built on this platform." 1>&2
+fi
+	
 
-                        PACKAGE_INSTALL="${PACKAGE_DIR}/${PACKAGE_VERSION}"
-    
-    
-    
-    
-    
 
+if test "${SUPPORTED}" = "yes"; then
+  SUPPORTED_TRUE=
+  SUPPORTED_FALSE='#'
+else
+  SUPPORTED_TRUE='#'
+  SUPPORTED_FALSE=
 fi
 
 
@@ -1903,8 +2037,6 @@ s%@SET_MAKE@%$SET_MAKE%g
 s%@MAINTAINER_MODE_TRUE@%$MAINTAINER_MODE_TRUE%g
 s%@MAINTAINER_MODE_FALSE@%$MAINTAINER_MODE_FALSE%g
 s%@MAINT@%$MAINT%g
-s%@SUPPORTED_TRUE@%$SUPPORTED_TRUE%g
-s%@SUPPORTED_FALSE@%$SUPPORTED_FALSE%g
 s%@CC@%$CC%g
 s%@CXX@%$CXX%g
 s%@LN_S@%$LN_S%g
@@ -1918,11 +2050,14 @@ s%@ecos_LIBS@%$ecos_LIBS%g
 s%@MSVC_SRCDIR@%$MSVC_SRCDIR%g
 s%@MSVC_TRUE@%$MSVC_TRUE%g
 s%@MSVC_FALSE@%$MSVC_FALSE%g
-s%@ecos_tk_libs@%$ecos_tk_libs%g
 s%@ECOS_REPOSITORY@%$ECOS_REPOSITORY%g
 s%@PACKAGE_DIR@%$PACKAGE_DIR%g
 s%@PACKAGE_VERSION@%$PACKAGE_VERSION%g
 s%@PACKAGE_INSTALL@%$PACKAGE_INSTALL%g
+s%@ecos_tk_libs@%$ecos_tk_libs%g
+s%@CPP@%$CPP%g
+s%@SUPPORTED_TRUE@%$SUPPORTED_TRUE%g
+s%@SUPPORTED_FALSE@%$SUPPORTED_FALSE%g
 
 CEOF
 EOF
--- a/packages/io/usb/slave/current/host/configure.in
+++ b/packages/io/usb/slave/current/host/configure.in
@@ -71,9 +71,10 @@ case "${host}" in
     *-*-linux-gnu* ) SUPPORTED="yes";;
     * ) SUPPORTED="no"
 esac
-AM_CONDITIONAL(SUPPORTED, test "${SUPPORTED}" = "yes")
 
-if test "${SUPPORTED}" = "yes" ; then
+if test "${SUPPORTED}" = "no" ; then
+    AC_MSG_WARN([USB testing is only supported on Linux hosts])
+else   
     AC_PROG_CC
     AC_PROG_CXX
     AC_PROG_LN_S
@@ -81,6 +82,7 @@ if test "${SUPPORTED}" = "yes" ; then
     AC_EXEEXT
     ECOS_PROG_MSVC
     ECOS_PROG_STANDARD_COMPILER_FLAGS
+    ECOS_PACKAGE_DIRS
 
     ECOS_PATH_TCL
     dnl Check that the version of tcl is sufficiently recent.
@@ -88,11 +90,23 @@ if test "${SUPPORTED}" = "yes" ; then
     dnl string commands after 8.1
     if test "${TK_MAJOR_VERSION}" = "8" ; then
         if test ${TK_MINOR_VERSION} -lt 2 ; then
-            AC_MSG_ERROR([The USB testing support requires at least version 8.2 of Tcl/Tk])
+	    AC_MSG_WARN([Version 8.2 or greater of Tcl/Tk is required])
+	    SUPPORTED="no"
         fi
     fi
-    ECOS_PACKAGE_DIRS
+    if test "${SUPPORTED}" = "yes" ; then
+        AC_CHECK_HEADERS("linux/usb.h" "linux/usbdevice_fs.h",,SUPPORTED="no")
+        if test "${SUPPORTED}" = "no" ; then
+	    AC_MSG_WARN([Required Linux kernel functionality does not appear to be available])
+        fi
+    fi
 fi
+	
+if test "${SUPPORTED}" = "no" ; then
+    AC_MSG_WARN([The USB testing support cannot be built on this platform.])
+fi
+	
+AM_CONDITIONAL(SUPPORTED, test "${SUPPORTED}" = "yes")
 
 dnl There is no real need for a config.h file at this time, since the code
 dnl is specific to Linux. This may change in future.