diff --git a/qse/Makefile.in b/qse/Makefile.in
index 38b76b61..5fa237b7 100644
--- a/qse/Makefile.in
+++ b/qse/Makefile.in
@@ -126,6 +126,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/cmd/Makefile.in b/qse/cmd/Makefile.in
index 2b9334d9..3e680825 100644
--- a/qse/cmd/Makefile.in
+++ b/qse/cmd/Makefile.in
@@ -111,6 +111,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/cmd/awk/Makefile.in b/qse/cmd/awk/Makefile.in
index 9eb971c3..9a30c4cc 100644
--- a/qse/cmd/awk/Makefile.in
+++ b/qse/cmd/awk/Makefile.in
@@ -98,6 +98,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/cmd/cut/Makefile.in b/qse/cmd/cut/Makefile.in
index 50957925..93bc1b1e 100644
--- a/qse/cmd/cut/Makefile.in
+++ b/qse/cmd/cut/Makefile.in
@@ -97,6 +97,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/cmd/scm/Makefile.in b/qse/cmd/scm/Makefile.in
index 99e40e64..1b2dfcae 100644
--- a/qse/cmd/scm/Makefile.in
+++ b/qse/cmd/scm/Makefile.in
@@ -98,6 +98,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/cmd/scm/scm.c b/qse/cmd/scm/scm.c
index 7fec90fc..bed4d18a 100644
--- a/qse/cmd/scm/scm.c
+++ b/qse/cmd/scm/scm.c
@@ -148,6 +148,7 @@ int scm_main (int argc, qse_char_t* argv[])
 	qse_scm_t* scm;
 	qse_scm_obj_t* obj;
 
+	QSE_ASSERT (0 == 1);
 	if (handle_args (argc, argv) == -1) return -1;
 	
 	scm = qse_scm_open (QSE_NULL, 0, opt_memsize, opt_meminc);
diff --git a/qse/cmd/sed/Makefile.in b/qse/cmd/sed/Makefile.in
index eacec081..288f90f2 100644
--- a/qse/cmd/sed/Makefile.in
+++ b/qse/cmd/sed/Makefile.in
@@ -97,6 +97,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/configure b/qse/configure
index a0af810f..5466ec75 100755
--- a/qse/configure
+++ b/qse/configure
@@ -792,6 +792,7 @@ build_vendor
 build_cpu
 build
 LIBTOOL
+ECHO
 TRUE
 RMDIR
 RM
@@ -5046,6 +5047,98 @@ else
   TRUE="$ac_cv_prog_TRUE"
 fi
 
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}echo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}echo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ECHO+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ECHO"; then
+  ac_cv_prog_ECHO="$ECHO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ECHO="${ac_tool_prefix}echo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ECHO=$ac_cv_prog_ECHO
+if test -n "$ECHO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ECHO" >&5
+$as_echo "$ECHO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_ECHO"; then
+  ac_ct_ECHO=$ECHO
+  # Extract the first word of "echo", so it can be a program name with args.
+set dummy echo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_ECHO+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_ECHO"; then
+  ac_cv_prog_ac_ct_ECHO="$ac_ct_ECHO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_ECHO="echo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_ECHO=$ac_cv_prog_ac_ct_ECHO
+if test -n "$ac_ct_ECHO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_ECHO" >&5
+$as_echo "$ac_ct_ECHO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_ECHO" = x; then
+    ECHO=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    ECHO=$ac_ct_ECHO
+  fi
+else
+  ECHO="$ac_cv_prog_ECHO"
+fi
+
 
 RM="$RM -f"
 
@@ -5599,13 +5692,13 @@ if test "${lt_cv_nm_interface+set}" = set; then :
 else
   lt_cv_nm_interface="BSD nm"
   echo "int some_variable = 0;" > conftest.$ac_ext
-  (eval echo "\"\$as_me:5602: $ac_compile\"" >&5)
+  (eval echo "\"\$as_me:5695: $ac_compile\"" >&5)
   (eval "$ac_compile" 2>conftest.err)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:5605: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval echo "\"\$as_me:5698: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
   (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:5608: output\"" >&5)
+  (eval echo "\"\$as_me:5701: output\"" >&5)
   cat conftest.out >&5
   if $GREP 'External.*some_variable' conftest.out > /dev/null; then
     lt_cv_nm_interface="MS dumpbin"
@@ -6800,7 +6893,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 6803 "configure"' > conftest.$ac_ext
+  echo '#line 6896 "configure"' > conftest.$ac_ext
   if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -8856,11 +8949,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:8859: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:8952: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:8863: \$? = $ac_status" >&5
+   echo "$as_me:8956: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -9195,11 +9288,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:9198: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:9291: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:9202: \$? = $ac_status" >&5
+   echo "$as_me:9295: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -9300,11 +9393,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:9303: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:9396: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:9307: \$? = $ac_status" >&5
+   echo "$as_me:9400: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -9355,11 +9448,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:9358: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:9451: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:9362: \$? = $ac_status" >&5
+   echo "$as_me:9455: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -11739,7 +11832,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11742 "configure"
+#line 11835 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11835,7 +11928,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11838 "configure"
+#line 11931 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13791,11 +13884,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13794: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13887: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:13798: \$? = $ac_status" >&5
+   echo "$as_me:13891: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -13890,11 +13983,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13893: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13986: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13897: \$? = $ac_status" >&5
+   echo "$as_me:13990: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -13942,11 +14035,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13945: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:14038: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13949: \$? = $ac_status" >&5
+   echo "$as_me:14042: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
diff --git a/qse/configure.ac b/qse/configure.ac
index 83b3f9af..7283553e 100644
--- a/qse/configure.ac
+++ b/qse/configure.ac
@@ -30,6 +30,7 @@ dnl check other tools
 AC_CHECK_TOOL(RM, rm)
 AC_CHECK_TOOL(RMDIR, rmdir)
 AC_CHECK_TOOL(TRUE, true)
+AC_CHECK_TOOL(ECHO, echo)
 
 dnl avoid "'/bin/rm: cannot remove `libtoolT': No such file or directory"
 RM="$RM -f"
diff --git a/qse/doc/Makefile.in b/qse/doc/Makefile.in
index 83f860b5..dfa5754d 100644
--- a/qse/doc/Makefile.in
+++ b/qse/doc/Makefile.in
@@ -115,6 +115,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/doc/page/Makefile.in b/qse/doc/page/Makefile.in
index fb8ef9df..a73d6f44 100644
--- a/qse/doc/page/Makefile.in
+++ b/qse/doc/page/Makefile.in
@@ -74,6 +74,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/Makefile.in b/qse/include/Makefile.in
index 2703eabf..57efce2a 100644
--- a/qse/include/Makefile.in
+++ b/qse/include/Makefile.in
@@ -112,6 +112,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/Makefile.in b/qse/include/qse/Makefile.in
index 6e21e968..65fa35d5 100644
--- a/qse/include/qse/Makefile.in
+++ b/qse/include/qse/Makefile.in
@@ -140,6 +140,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/awk/Makefile.in b/qse/include/qse/awk/Makefile.in
index caa63fde..94cd2739 100644
--- a/qse/include/qse/awk/Makefile.in
+++ b/qse/include/qse/awk/Makefile.in
@@ -101,6 +101,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/cmn/Makefile.in b/qse/include/qse/cmn/Makefile.in
index c3003822..c898bb62 100644
--- a/qse/include/qse/cmn/Makefile.in
+++ b/qse/include/qse/cmn/Makefile.in
@@ -104,6 +104,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/cut/Makefile.in b/qse/include/qse/cut/Makefile.in
index e1092e6a..2780b0ea 100644
--- a/qse/include/qse/cut/Makefile.in
+++ b/qse/include/qse/cut/Makefile.in
@@ -101,6 +101,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/http/Makefile.in b/qse/include/qse/http/Makefile.in
index ef4cb4eb..d583894a 100644
--- a/qse/include/qse/http/Makefile.in
+++ b/qse/include/qse/http/Makefile.in
@@ -99,6 +99,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/http/http.h b/qse/include/qse/http/http.h
index b9582aaf..e5c59365 100644
--- a/qse/include/qse/http/http.h
+++ b/qse/include/qse/http/http.h
@@ -87,8 +87,23 @@ struct qse_http_req_t
 	qse_http_octb_t con;
 };
 
+#if 0
+struct qse_http_rep_node_t
+{
+	int type; /* TEXT, RESOURCE */
+	qse_http_req_node_t* next;
+};
+
+typedef struct qse_http_rep_t qse_http_rep_t;
+
+struct qse_http_rep_t
+{
+};
+#endif
+
 typedef struct qse_http_reqcbs_t qse_http_reqcbs_t;
 
+
 struct qse_http_reqcbs_t
 {
 	int (*request) (qse_http_t* http, qse_http_req_t* req);
@@ -122,8 +137,9 @@ struct qse_http_t
 		/* buffers needed to for processing a request */
 		struct
 		{
-			qse_http_octb_t raw;
-			qse_http_octb_t tra;
+			qse_http_octb_t raw; /* buffer to hold raw octets */
+			qse_http_octb_t tra; /* buffer for handling trailers */
+			qse_http_octb_t pen; /* buffer for raw octets during pending period */
 		} b; 
 
 		/* points to the head of the combined header list */
diff --git a/qse/include/qse/scm/Makefile.in b/qse/include/qse/scm/Makefile.in
index 8cd30938..8ef8c136 100644
--- a/qse/include/qse/scm/Makefile.in
+++ b/qse/include/qse/scm/Makefile.in
@@ -99,6 +99,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/include/qse/sed/Makefile.in b/qse/include/qse/sed/Makefile.in
index a81f4fa8..bda0ff88 100644
--- a/qse/include/qse/sed/Makefile.in
+++ b/qse/include/qse/sed/Makefile.in
@@ -101,6 +101,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/Makefile.in b/qse/lib/Makefile.in
index 46ddb490..9486cc04 100644
--- a/qse/lib/Makefile.in
+++ b/qse/lib/Makefile.in
@@ -111,6 +111,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/awk/Makefile.in b/qse/lib/awk/Makefile.in
index 4ee32c97..fa5312fb 100644
--- a/qse/lib/awk/Makefile.in
+++ b/qse/lib/awk/Makefile.in
@@ -138,6 +138,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/cmn/Makefile.in b/qse/lib/cmn/Makefile.in
index c5e7adea..1f822a4e 100644
--- a/qse/lib/cmn/Makefile.in
+++ b/qse/lib/cmn/Makefile.in
@@ -140,6 +140,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/cmn/assert.c b/qse/lib/cmn/assert.c
index ffd9ef42..84e5d6c2 100644
--- a/qse/lib/cmn/assert.c
+++ b/qse/lib/cmn/assert.c
@@ -90,6 +90,20 @@ void qse_assert_failed (
 
 	qse_sio_puts (QSE_SIO_ERR, QSE_T("=[ASSERTION FAILURE]============================================================\n"));
 
+#if 1
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("                         __ \n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T(" _____ _____ _____ _____|  |\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|     |     |  _  |   __|  |\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|  |  |  |  |   __|__   |__|\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|_____|_____|__|  |_____|__|\n"));
+#else
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("                            __ \n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T(" _____ _____ _____ _____   |  |\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|     |     |  _  |   __|  |  |\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|  |  |  |  |   __|__   |  |__|\n"));
+	qse_sio_puts (QSE_SIO_ERR, QSE_T("|_____|_____|__|  |_____|  |__|\n"));
+#endif
+
 	qse_sio_puts (QSE_SIO_ERR, QSE_T("FILE "));
 	qse_sio_puts (QSE_SIO_ERR, file);
 	qse_sio_puts (QSE_SIO_ERR, QSE_T(" LINE "));
diff --git a/qse/lib/cut/Makefile.in b/qse/lib/cut/Makefile.in
index 5f1f7821..d1189585 100644
--- a/qse/lib/cut/Makefile.in
+++ b/qse/lib/cut/Makefile.in
@@ -136,6 +136,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/http/Makefile.in b/qse/lib/http/Makefile.in
index d08a4952..3adaefb1 100644
--- a/qse/lib/http/Makefile.in
+++ b/qse/lib/http/Makefile.in
@@ -117,6 +117,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/http/http.c b/qse/lib/http/http.c
index 7a254794..72e7abb4 100644
--- a/qse/lib/http/http.c
+++ b/qse/lib/http/http.c
@@ -18,7 +18,7 @@
     License along with QSE. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <qse/utl/http.h>
+#include <qse/http/http.h>
 #include <qse/cmn/chr.h>
 #include "../cmn/mem.h"
 
@@ -229,11 +229,13 @@ qse_http_t* qse_http_init (qse_http_t* http, qse_mmgr_t* mmgr)
 
 	init_buffer (http, &http->reqx.b.raw);
 	init_buffer (http, &http->reqx.b.tra);
+	init_buffer (http, &http->reqx.b.pen);
 	init_buffer (http, &http->req.con);
 
 	if (qse_htb_init (&http->req.hdrtab, mmgr, 60, 70, 1, 1) == QSE_NULL) 
 	{
 		fini_buffer (http, &http->req.con);
+		fini_buffer (http, &http->reqx.b.pen);
 		fini_buffer (http, &http->reqx.b.tra);
 		fini_buffer (http, &http->reqx.b.raw);
 		return QSE_NULL;
@@ -247,6 +249,7 @@ void qse_http_fini (qse_http_t* http)
 	qse_htb_fini (&http->req.hdrtab);
 	clear_combined_headers (http);
 	fini_buffer (http, &http->req.con);
+	fini_buffer (http, &http->reqx.b.pen);
 	fini_buffer (http, &http->reqx.b.tra);
 	fini_buffer (http, &http->reqx.b.raw);
 }
@@ -993,8 +996,21 @@ int qse_http_feed (qse_http_t* http, const qse_byte_t* req, qse_size_t len)
 	const qse_byte_t* end = req + len;
 	const qse_byte_t* ptr = req;
 
+#if 0
+	if (http->reqx.pending)
+	{
+	}	
+#endif
+
 	/* does this goto drop code maintainability? */
-	if (http->reqx.s.need > 0) goto content_resume;
+	if (http->reqx.s.need > 0) 
+	{
+		/* we're in need of as many octets as http->reqx.s.need 
+		 * for contents body. make a proper jump to resume
+		 * content handling */
+		goto content_resume;
+	}
+
 	switch (http->reqx.s.chunk.phase)
 	{
 		case GET_CHUNK_LEN:
@@ -1099,14 +1115,16 @@ int qse_http_feed (qse_http_t* http, const qse_byte_t* req, qse_size_t len)
 					}
 					else
 					{
-						/* we need to read as many octets as Content-Length */
+						/* we need to read as many octets as
+						 * Content-Length */
 						http->reqx.s.need = http->req.attr.content_length;
 					}
 
 					if (http->reqx.s.need > 0)
 					{
-						/* content-length or chunked data length specified */
-	
+						/* content-length or chunked data length 
+						 * specified */
+
 						qse_size_t avail;
 	
 					content_resume:
@@ -1230,3 +1248,19 @@ feedme_more:
 	return 0;
 }
 
+int qse_http_addtext (qse_http_t* http, const qse_byte_t* ptr, qse_size_t len)
+{
+}
+
+int qse_http_addresource (qse_http_t* http, const void* ptr, qse_size_t len)
+{
+}
+
+int qse_http_addheader (
+	qse_http_t* http, const qse_byte_t* key, const qse_byte_t* val)
+{
+}
+
+int qse_http_emit (qse_http_t* http)
+{
+}
diff --git a/qse/lib/scm/Makefile.in b/qse/lib/scm/Makefile.in
index 61088db9..f2be2aad 100644
--- a/qse/lib/scm/Makefile.in
+++ b/qse/lib/scm/Makefile.in
@@ -117,6 +117,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/lib/scm/scm.c b/qse/lib/scm/scm.c
index 71ceb517..7478f447 100644
--- a/qse/lib/scm/scm.c
+++ b/qse/lib/scm/scm.c
@@ -22,6 +22,8 @@
 
 QSE_IMPLEMENT_COMMON_FUNCTIONS (scm)
 
+#define IS_NIL(x) ((x) != scm->nil)
+
 static qse_scm_t* qse_scm_init (
 	qse_scm_t*  scm,
 	qse_mmgr_t* mmgr,
@@ -29,9 +31,15 @@ static qse_scm_t* qse_scm_init (
 	qse_size_t  mem_ubound_inc
 );
 
-static void qse_scm_fini (qse_scm_t* scm);
-static qse_scm_val_t* mkcons (
-	qse_scm_t* scm, qse_scm_val_t* car, qse_scm_val_t* cdr);
+static void qse_scm_fini (
+	qse_scm_t* scm
+);
+
+static qse_scm_ent_t* make_pair_entity (
+	qse_scm_t*     scm,
+	qse_scm_ent_t* car, 
+	qse_scm_ent_t* cdr
+);
 
 qse_scm_t* qse_scm_open (
 	qse_mmgr_t* mmgr, qse_size_t xtnsize,
@@ -71,11 +79,11 @@ void qse_scm_close (qse_scm_t* scm)
 
 static QSE_INLINE void delete_all_value_blocks (qse_scm_t* scm)
 {
-	while (scm->mem.vbl)
+	while (scm->mem.ebl)
 	{
-		qse_scm_vbl_t* vbl = scm->mem.vbl;
-		scm->mem.vbl = scm->mem.vbl->next;
-		QSE_MMGR_FREE (scm->mmgr, vbl);
+		qse_scm_enb_t* enb = scm->mem.ebl;
+		scm->mem.ebl = scm->mem.ebl->next;
+		QSE_MMGR_FREE (scm->mmgr, enb);
 	}
 }
 
@@ -83,17 +91,17 @@ static qse_scm_t* qse_scm_init (
 	qse_scm_t* scm, qse_mmgr_t* mmgr, 
 	qse_size_t mem_ubound, qse_size_t mem_ubound_inc)
 {
-#if 0
-	static qse_scm_val_t static_values[3] =
+	static qse_scm_ent_t static_values[3] =
 	{
+		/* dswcount, mark, atom, type */
+
 		/* nil */
-		{ (QSE_SCM_VAL_ATOM | QSE_SCM_VAL_MARK) },
+		{ 0, 1, 1, QSE_SCM_ENT_NIL },
 		/* f */
-		{ (QSE_SCM_VAL_ATOM | QSE_SCM_VAL_MARK) },
+		{ 0, 1, 1, QSE_SCM_ENT_T }, 
 		/* t */
-		{ (QSE_SCM_VAL_ATOM | QSE_SCM_VAL_MARK) }
+		{ 0, 1, 1, QSE_SCM_ENT_F }
 	};
-#endif
 
 	if (mmgr == QSE_NULL) mmgr = QSE_MMGR_GETDFL();
 
@@ -119,17 +127,15 @@ static qse_scm_t* qse_scm_init (
 		return QSE_NULL;
 	}
 
-#if 0
 	/* initialize common values */
 	scm->nil = &static_values[0];
-	scm->f = &static_values[1];
-	scm->t = &static_values[2];
-#endif
+	scm->f   = &static_values[1];
+	scm->t   = &static_values[2];
 
-	scm->mem.vbl = QSE_NULL;
+	scm->mem.ebl = QSE_NULL;
 	scm->mem.free = scm->nil;
 
-	scm->genv = mkcons (scm, scm->nil, scm->nil);
+	scm->genv = make_pair_entity (scm, scm->nil, scm->nil);
 	if (scm->genv == QSE_NULL)
 	{
 		delete_all_value_blocks (scm);
@@ -138,6 +144,8 @@ static qse_scm_t* qse_scm_init (
 		return QSE_NULL;
 	}
 
+	scm->symtab = scm->nil;
+
 	scm->reg.dmp = scm->nil;
 	scm->reg.env = scm->genv;
 
@@ -186,7 +194,7 @@ int qse_scm_attachio (qse_scm_t* scm, qse_scm_io_t* io)
 	if (io->out (scm, QSE_SCM_IO_OPEN, &scm->io.arg.out, QSE_NULL, 0) <= -1)
 	{
 		if (scm->err.num == QSE_SCM_ENOERR)
-			qse_scm_seterror (scm,QSE_SCM_EIO, QSE_NULL, QSE_NULL);
+			qse_scm_seterror (scm, QSE_SCM_EIO, QSE_NULL, QSE_NULL);
 		io->in (scm, QSE_SCM_IO_CLOSE, &scm->io.arg.in, QSE_NULL, 0);
 		return -1;
 	}
@@ -199,60 +207,50 @@ int qse_scm_attachio (qse_scm_t* scm, qse_scm_io_t* io)
 	return 0;
 }
 
-static qse_scm_vbl_t* newvbl (qse_scm_t* scm, qse_size_t len)
+static qse_scm_enb_t* new_entity_block (qse_scm_t* scm, qse_size_t len)
 {
 	/* 
 	 * create a new value block containing as many slots as len
 	 */
 
-	qse_scm_vbl_t* blk;
-	qse_scm_val_t* v;
+	qse_scm_enb_t* blk;
+	qse_scm_ent_t* v;
 	qse_size_t i;
 
-	blk = (qse_scm_vbl_t*) QSE_MMGR_ALLOC (
+	blk = (qse_scm_enb_t*) QSE_MMGR_ALLOC (
 		scm->mmgr, 
-		QSE_SIZEOF(qse_scm_vbl_t) + 
-		QSE_SIZEOF(qse_scm_val_t) * len
+		QSE_SIZEOF(qse_scm_enb_t) + 
+		QSE_SIZEOF(qse_scm_ent_t) * len
 	);
 	if (blk == QSE_NULL)
 	{
-		scm->err.num = QSE_SCM_ENOMEM;
+		qse_scm_seterror (scm, QSE_SCM_ENOMEM, QSE_NULL, QSE_NULL);
 		return QSE_NULL;
 	}
 
 	/* initialize the block fields */
-	blk->ptr = (qse_scm_val_t*)(blk + 1);
+	blk->ptr = (qse_scm_ent_t*)(blk + 1);
 	blk->len = len;
 
 	/* chain the value block to the block list */
-	blk->next = scm->mem.vbl;
-	scm->mem.vbl = blk;
+	blk->next = scm->mem.ebl;
+	scm->mem.ebl = blk;
 
-	/* chain each slot to the free slot list */
+	/* chain each slot to the free slot list using 
+	 * the CDR field of an entity */
 	v = &blk->ptr[0];
 	for (i = 0; i < len -1; i++) 
 	{
-		qse_scm_val_t* tmp = v++;
-		tmp->u.cons.cdr = v;
+		qse_scm_ent_t* tmp = v++;
+		PAIR_CDR(tmp) = v;
 	}
-	v->u.cons.cdr = scm->mem.free;
+	PAIR_CDR(v) = scm->mem.free;
 	scm->mem.free = &blk->ptr[0];
 
 	return blk;
 };
 
-/* TODO: redefine this ... */
-#define IS_ATOM(v)  ((v)->flags & (QSE_SCM_VAL_STRING | QSE_SCM_VAL_NUMBER | QSE_SCM_VAL_PROC)
-
-#define IS_MARKED(v)  ((v)->mark)
-#define SET_MARK(v)   ((v)->mark = 1)
-#define CLEAR_MARK(v) ((v)->mark = 0)
-
-#define ZERO_DSW_COUNT(v) ((v)->dsw_count = 0)
-#define GET_DSW_COUNT(v)  ((v)->dsw_count)
-#define INC_DSW_COUNT(v)  ((v)->dsw_count++)
-
-static void mark (qse_scm_t* scm, qse_scm_val_t* v)
+static void mark (qse_scm_t* scm, qse_scm_ent_t* v)
 {
 	/* 
 	 * mark values non-recursively with Deutsch-Schorr-Waite(DSW) algorithm 
@@ -260,24 +258,23 @@ static void mark (qse_scm_t* scm, qse_scm_val_t* v)
 	 * with the help of additional variables.
 	 */
 
-	qse_scm_val_t* parent, * me;
+	qse_scm_ent_t* parent, * me;
 
-#if 0
 	/* initialization */
 	parent = QSE_NULL;
 	me = v;
 
-	SET_MARK (me);
-	/*if (!IS_ATOM(me))*/ ZERO_DSW_COUNT (me);
+	MARK(me) = 1;
+	/*if (!ATOM(me))*/ DSWCOUNT(me) = 0;
 
 	while (1)
 	{
-		if (IS_ATOM(me) || GET_DSW_COUNT(me) >= 2)
+		if (ATOM(me) || DSWCOUNT(me) >= QSE_COUNTOF(me->u.ref.ent))
 		{
 			/* 
 			 * backtrack to the parent node 
 			 */
-			qse_scm_val_t* child;
+			qse_scm_ent_t* child;
 
 			/* nothing more to backtrack? end of marking */
 			if (parent == QSE_NULL) return;
@@ -289,30 +286,30 @@ static void mark (qse_scm_t* scm, qse_scm_val_t* v)
 			me = parent;
 
 			/* change the parent to the parent of parent */
-			parent = me->u.cona.val[GET_DSW_COUNT(me)];
+			parent = me->u.ref.ent[DSWCOUNT(me)];
 			
 			/* restore the cell contents */
-			me->u.cona.val[GET_DSW_COUNT(me)] = child;
+			me->u.ref.ent[DSWCOUNT(me)] = child;
 
 			/* increment the counter to indicate that the 
-			 * 'count'th field has been processed.
-			INC_DSW_COUNT (me);
+			 * 'count'th field has been processed. */
+			DSWCOUNT(me)++;
 		}
 		else 
 		{
 			/* 
 			 * move on to an unprocessed child 
 			 */
-			qse_scm_val_t* child;
+			qse_scm_ent_t* child;
 
-			child = me->u.cona.val[GET_DSW_COUNT(me)];
+			child = me->u.ref.ent[DSWCOUNT(me)];
 
 			/* process the field */
-			if (child && !ismark(child))
+			if (child && !MARK(child))
 			{
 				/* change the contents of the child chonse 
 				 * to point to the current parent */
-				me->u.cona.val[GET_DSW_COUNT(me)] = parent;
+				me->u.ref.ent[DSWCOUNT(me)] = parent;
 
 				/* link me to the head of parent list */
 				parent = me;
@@ -320,23 +317,23 @@ static void mark (qse_scm_t* scm, qse_scm_val_t* v)
 				/* let me point to the child chosen */
 				me = child;
 
-				SET_MARK (me);
-				/*if (!IS_ATOM(me))*/ ZERO_DSW_COUNT (me);
+				MARK(me) = 1;
+				/*if (!ATOM(me))*/ DSWCOUNT(me) = 0;
 			}
 			else
 			{
-				INC_DSW_COUNT (me)
+				/* increment the count */
+				DSWCOUNT(me)++;
 			}
 		}
 	}
-#endif
 }
 
 
 #if 0
-static void mark (qse_scm_t* scm, qse_scm_val_t* v)
+static void mark (qse_scm_t* scm, qse_scm_ent_t* v)
 {
-	qse_scm_val_t* t, * p, * q;
+	qse_scm_ent_t* t, * p, * q;
 
 	t = QSE_NULL;
 	p = v;
@@ -389,9 +386,9 @@ E6:
 }
 #endif
 
-static void gc (qse_scm_t* scm, qse_scm_val_t* x, qse_scm_val_t* y)
+static void gc (qse_scm_t* scm, qse_scm_ent_t* x, qse_scm_ent_t* y)
 {
-	//mark (scm, scm->oblist);
+	//mark (scm, scm->symtab);
 	mark (scm, scm->genv);
 
 	mark (scm, scm->reg.arg);
@@ -399,45 +396,276 @@ static void gc (qse_scm_t* scm, qse_scm_val_t* x, qse_scm_val_t* y)
 	mark (scm, scm->reg.cod);
 	mark (scm, scm->reg.dmp);
 
+	/* mark the temporaries */
 	mark (scm, x);
 	mark (scm, y);
+
+
+	/* scan the allocated values */
 }
 
-static qse_scm_val_t* mkval (qse_scm_t* scm, qse_scm_val_t* x, qse_scm_val_t* y)
+/*
+
+rsr4 
+
+the following identifiers are syntatic keywors and should not be	
+used as variables.
+
+ =>           do            or
+ and          else          quasiquote
+ begin        if            quote
+ case         lambda        set!
+ cond         let           unquote
+ define       let*          unquote-splicing
+ delay        letrec
+
+however, you can allow for these keywords to be used as variables...
+
+biniding, unbound...
+environment.. a set of visible bindings at some point in a program.
+
+
+
+                  type           atom       cons        
+  number          NUMBER         Y 
+  string          STRING         Y
+  symbol          SYMBOL                    name,NIL
+  syntax          SYNTAX|SYMBOL             name,NIL 
+  proc            PROC           Y
+  pair            PAIR           Y
+  closure
+  continuation
+
+  an atom does not reference any other values.
+  a symbol can be assoicated with property list
+	(put 'a 'name "brian")
+	(put 'a 'city "daegu")
+	-------------------------
+	(define a1 'a)
+	(put a1 'name "brian")
+	(put a1 'city "daegu")
+	-------------------------
+	(get a1 'name)
+	(get a1 'city)
+
+  a procedure is a privimitive routine built-in to scheme.
+  a closure is an anonymous routine defined with lambda.
+  both can be bound to a variable in the environment.
+
+  a syntax is more primitive than a procedure.
+  a syntax is created as if it is a symbol but not registerd 
+  into an environment
+
+         car            cdr
+| STR  | PTR CHR ARR  |  -1           |
+| PROC | PROCNUM      |               |
+| SYM  | REF STR      | REF PROP LIST |
+| SYN  | REF STR      | REF PROP LIST | 
+
+*/
+    
+static qse_scm_ent_t* alloc_entity (
+	qse_scm_t* scm, qse_scm_ent_t* x, qse_scm_ent_t* y)
 {
-	qse_scm_val_t* v;
+	/* find a free value slot and return it.
+	 * two parameters x and y are saved from garbage collection */
+
+	qse_scm_ent_t* v;
 
 	if (scm->mem.free == scm->nil)
 	{
-		gc (scm, x, y);
+		/* if no free slot is available */
+		gc (scm, x, y); /* perform garbage collection */
 		if (scm->mem.free == scm->nil)
 		{
-			if (newvbl (scm,  1000) == QSE_NULL) return QSE_NULL;
+			/* if no free slot is available after garbage collection,
+			 * make new value blocks containing more free slots */
+
+/* TODO: make the value block size configurable */
+			if (new_entity_block (scm, 1000) == QSE_NULL) return QSE_NULL;
 			QSE_ASSERT (scm->mem.free != scm->nil);
 		}
 	}
 
 	v = scm->mem.free;
-	scm->mem.free = v->u.cons.cdr;
+	scm->mem.free = PAIR_CDR(v);
 	
 	return v;
 }
 
-
-static qse_scm_val_t* mkcons (
-	qse_scm_t* scm, qse_scm_val_t* car, qse_scm_val_t* cdr)
+static qse_scm_ent_t* make_pair_entity (
+	qse_scm_t* scm, qse_scm_ent_t* car, qse_scm_ent_t* cdr)
 {
-	qse_scm_val_t* v;
+	qse_scm_ent_t* v;
 
-	v = mkval (scm, car, cdr);
+	v = alloc_entity (scm, car, cdr);
 	if (v == QSE_NULL) return QSE_NULL;
 
-#if 0
-	v->flag = QSE_SCM_VAL_PAIR;
-	v->u.cons.car = car;
-	v->u.cons.cdr = car;
-#endif
+	TYPE(v) = QSE_SCM_ENT_PAIR;
+	ATOM(v) = 0; /* a pair is not an atom as it references other entities */
+	PAIR_CAR(v) = car;
+	PAIR_CDR(v) = cdr;
 
 	return v;
 }
 
+
+static qse_scm_ent_t* make_string_entity (
+	qse_scm_t* scm, const qse_char_t* str, qse_size_t len)
+{
+	qse_scm_ent_t* v;
+
+	v = alloc_entity (scm, scm->nil, scm->nil);
+	if (v == QSE_NULL) return QSE_NULL;
+
+	TYPE(v) = QSE_SCM_ENT_STR;
+	ATOM(v) = 1;
+/* TODO: allocate a string from internal managed region .
+Calling strdup is not an option as it is not managed...
+*/
+	STR_PTR(v) = qse_strxdup (str, len, QSE_MMGR(scm));
+	if (STR_PTR(v) == QSE_NULL) 
+	{
+		qse_scm_seterror (scm, QSE_SCM_ENOMEM, QSE_NULL, QSE_NULL);
+		return QSE_NULL;
+	}
+	STR_LEN(v) = len;
+
+	return v;
+}
+
+static qse_scm_ent_t* make_name_entity (qse_scm_t* scm, const qse_char_t* str)
+{
+	qse_scm_ent_t* v;
+
+	v = alloc_entity (scm, scm->nil, scm->nil);
+	if (v == QSE_NULL) return QSE_NULL;
+
+	TYPE(v) = QSE_SCM_ENT_NAM;
+	ATOM(v) = 1;
+/* TODO: allocate a string from internal managed region .
+Calling strdup is not an option as it is not managed...
+*/
+	LAB_PTR(v) = qse_strdup (str, QSE_MMGR(scm));
+	if (LAB_PTR(v) == QSE_NULL) 
+	{
+		qse_scm_seterror (scm, QSE_SCM_ENOMEM, QSE_NULL, QSE_NULL);
+		return QSE_NULL;
+	}
+	LAB_CODE(v) = 0;
+
+	return v;
+}
+
+static qse_scm_ent_t* make_symbol_entity (qse_scm_t* scm, const qse_char_t* name)
+{
+	qse_scm_ent_t* pair, * sym, * nam;
+
+/* TODO: use a hash table, red-black tree to maintain symbol table 
+ * The current linear search algo is not performance friendly...
+ */
+
+	/* find if the symbol already exists by traversing the pair list 
+	 * and inspecting the symbol name pointed to by CAR of each pair. 
+	 *
+	 * the symbol table is a list of pairs whose CAR points to a symbol
+	 * and CDR is used for chaining.
+	 *   
+	 *   +-----+-----+
+	 *   |     |     |
+	 *   +-----+-----+
+	 *  car |     | cdr        +-----+-----+
+	 *      |     +----------> |     |     |
+	 *      V                  +-----+-----+
+	 *    +--------+          car | 
+      *    | symbol |              V
+	 *    +--------+           +--------+
+	 *                         | symbol |
+	 *                         +--------+
+	 */
+	for (pair = scm->symtab; !IS_NIL(pair); pair = PAIR_CDR(pair))
+	{
+		sym = PAIR_CAR(pair);
+		if (qse_strcmp(name, LAB_PTR(SYM_NAME(sym))) == 0) return sym;
+	}
+	
+	/* no existing symbol with such a name is found.  
+	 * let's create a new symbol. the first step is to create a 
+	 * string entity to contain the symbol name */
+	nam = make_name_entity (scm, name);
+	if (nam == QSE_NULL) return QSE_NULL;
+
+	/* let's allocate the actual symbol entity that references the
+	 * the symbol name entity created above */
+	sym = alloc_entity (scm, nam, scm->nil);
+	if (sym == QSE_NULL) return QSE_NULL;
+	TYPE(sym) = QSE_SCM_ENT_SYM;
+	ATOM(sym) = 0;
+	SYM_NAME(sym) = nam;
+	SYM_PROP(sym) = scm->nil; /* no properties yet */
+
+	/* chain the symbol entity to the symbol table for lookups later */
+	pair = make_pair_entity (scm, sym, scm->symtab);
+	if (pair == QSE_NULL) return QSE_NULL;
+	scm->symtab = pair;
+
+	return sym;
+}
+
+static qse_scm_ent_t* make_syntax_entity (
+	qse_scm_t* scm, const qse_char_t* name, int code)
+{
+	qse_scm_ent_t* v;
+
+	QSE_ASSERTX (code > 0, "Syntax code must be greater than 0");
+
+	v = make_symbol_entity (scm, name);
+	if (v == QSE_NULL) return QSE_NULL;
+
+	/* we piggy-back the syntax code to a symbol name.
+	 * the syntax entity is basically a symbol except that the
+	 * code field of its label entity is set to non-zero. 
+	 */
+	TYPE(v) |= QSE_SCM_ENT_SYNT; 
+	SYNT_CODE(v) = code; 
+
+	return v;
+}
+
+static qse_scm_ent_t* make_proc_entity (
+	qse_scm_t* scm, const qse_char_t* name, int code)
+{
+	qse_scm_ent_t* sym, * proc, * pair;
+
+	/* a procedure entity is a built-in function that
+	 * that can be overridden by a user while a syntax entity
+	 * represents a lower-level syntatic function that can't 
+	 * be overriden. 
+	 * (define lambda 10) is legal but does not change the
+	 *    meaning of lambda when used as a function name. 	
+	 * (define eval 10) changes the meaning of eval totally.
+	 */ 
+
+	/* create a symbol containing the name */
+	sym = make_symbol_entity (scm, name);
+	if (sym == QSE_NULL) return QSE_NULL;
+
+	/* create an actual procecure value which is a number containing
+	 * the opcode for the procedure */
+	proc = alloc_entity (scm, scm->nil, scm->nil);
+	if (proc == QSE_NULL) return QSE_NULL;
+	TYPE(proc) = QSE_SCM_ENT_PROC;
+	ATOM(proc) = 1;
+	PROC_CODE(proc) = code; 
+	
+	/* create a pair containing the name symbol and the procedure value */
+	pair = make_pair_entity (scm, sym, proc);
+	if (pair == QSE_NULL) return QSE_NULL;
+
+	/* link it to the global environment */
+	pair = make_pair_entity (scm, pair, PAIR_CAR(scm->genv));
+	if (pair == QSE_NULL) return QSE_NULL;
+	PAIR_CAR(scm->genv) = pair;
+
+	return proc;
+}
diff --git a/qse/lib/scm/scm.h b/qse/lib/scm/scm.h
index 9f6d5846..54e11ee7 100644
--- a/qse/lib/scm/scm.h
+++ b/qse/lib/scm/scm.h
@@ -40,65 +40,100 @@
 #define QSE_SCM_TOUPPER(scm,c)  QSE_TOUPPER(c)
 #define QSE_SCM_TOLOWER(scm,c)  QSE_TOLOWER(c)
 
-#define QSE_SCM_VAL_STRING         1    /* 0000000000000001 */
-#define QSE_SCM_VAL_NUMBER         2    /* 0000000000000010 */
-#define QSE_SCM_VAL_SYMBOL         4    /* 0000000000000100 */
-#define QSE_SCM_VAL_SYNTAX         8    /* 0000000000001000 */
-#define QSE_SCM_VAL_PROC          16    /* 0000000000010000 */
-
-#define QSE_SCM_VAL_PAIR          32    /* 0000000000100000 */
-#define QSE_SCM_VAL_CLOSURE       64    /* 0000000001000000 */
-#define QSE_SCM_VAL_CONTINUATION 128    /* 0000000010000000 */
-#define QSE_SCM_VAL_MACRO        256    /* 0000000100000000 */
-#define QSE_SCM_VAL_PROMISE      512    /* 0000001000000000 */
-#define QSE_SCM_VAL_ATOM        4096    /* 0001000000000000 */ /* only for gc */
-
-typedef struct qse_scm_val_t qse_scm_val_t;
-struct qse_scm_val_t
+enum qse_scm_ent_type_t
 {
-	qse_uint16_t dsw_count: 2;
-	qse_uint16_t mark:      1;
-	qse_uint16_t types:     13;
+	QSE_SCM_ENT_NIL     = (1 << 0),
+	QSE_SCM_ENT_T       = (1 << 1),
+	QSE_SCM_ENT_F       = (1 << 2),
+	QSE_SCM_ENT_NUM     = (1 << 3),
+	QSE_SCM_ENT_STR     = (1 << 4), 
+	QSE_SCM_ENT_NAM     = (1 << 5),
+	QSE_SCM_ENT_SYM     = (1 << 6),
+	QSE_SCM_ENT_PAIR    = (1 << 7),
+	QSE_SCM_ENT_PROC    = (1 << 8),
+	QSE_SCM_ENT_SYNT    = (1 << 9)
+
+};
+
+#if 0
+#define QSE_SCM_ENT_CLOSURE       64    /* 0000000001000000 */
+#define QSE_SCM_ENT_CONTINUATION 128    /* 0000000010000000 */
+#define QSE_SCM_ENT_MACRO        256    /* 0000000100000000 */
+#define QSE_SCM_ENT_PROMISE      512    /* 0000001000000000 */
+#endif
+
+typedef struct qse_scm_ent_t qse_scm_ent_t;
+
+/**
+ * The qse_scm_ent_t type defines an entity that represents an individual
+ * value in scheme.
+ */
+struct qse_scm_ent_t
+{
+	qse_uint16_t dswcount: 2;
+	qse_uint16_t mark:     1;
+	qse_uint16_t atom:     1;
+	qse_uint16_t type:     12;
 
 	union
 	{
 		struct
 		{
-			qse_char_t* ptr;
-			qse_size_t  len;
-		} str;
+			qse_long_t val;
+		} num; /* number */
 
 		struct
 		{
-			qse_long_t val;
-		} num;
+			/* a string doesn't need to be null-terminated 
+			 * as the length is remembered */
+			qse_char_t* ptr; 
+			qse_size_t  len;
+		} str; /* string */
+
+		struct
+		{
+			qse_char_t* ptr;  /* null-terminated string */
+			int         code; /* used for syntax entities only */
+		} lab; /* label */
+
+		struct
+		{
+			int code;
+		} proc;
 		
 		struct
 		{
-			qse_scm_val_t* car;
-			qse_scm_val_t* cdr;
-		} cons;
-
-		/* arrayed cons. cona must maintain the
-		 * same size as cons */
-		struct
-		{
-			qse_scm_val_t* val[2];
-		} cona; 
+			qse_scm_ent_t* ent[2];
+		} ref; 
 	} u;
 };
 
+#define DSWCOUNT(v)       ((v)->dswcount)
+#define MARK(v)           ((v)->mark)
+#define TYPE(v)           ((v)->type)
+#define ATOM(v)           ((v)->atom)
+#define NUM_VALUE(v)      ((v)->u.num.val)
+#define STR_PTR(v)        ((v)->u.str.ptr)
+#define STR_LEN(v)        ((v)->u.str.len)
+#define LAB_PTR(v)        ((v)->u.lab.ptr)
+#define LAB_CODE(v)       ((v)->u.lab.code)
+#define SYM_NAME(v)       ((v)->u.ref.ent[0])
+#define SYM_PROP(v)       ((v)->u.ref.ent[1])
+#define PAIR_CAR(v)       ((v)->u.ref.ent[0])
+#define PAIR_CDR(v)       ((v)->u.ref.ent[1])
+#define PROC_CODE(v)      ((v)->u.proc.code)
+#define SYNT_CODE(v)      LAB_CODE(SYM_NAME(v))
 
 /**
- * The qse_scm_vbl_t type defines a value block. A value block is allocated
+ * The qse_scm_enb_t type defines a value block. A value block is allocated
  * when more memory is requested and is chained to existing value blocks.
  */
-typedef struct qse_scm_vbl_t qse_scm_vbl_t;
-struct qse_scm_vbl_t
+typedef struct qse_scm_enb_t qse_scm_enb_t;
+struct qse_scm_enb_t
 {
-	qse_scm_val_t* ptr;
+	qse_scm_ent_t* ptr;
 	qse_size_t     len;
-	qse_scm_vbl_t* next;	
+	qse_scm_enb_t* next;	
 };
 
 struct qse_scm_t 
@@ -144,26 +179,29 @@ struct qse_scm_t
 	} r;
 
 	/* common values */
-	qse_scm_val_t* nil;
-	qse_scm_val_t* t;
-	qse_scm_val_t* f;
+	qse_scm_ent_t* nil;
+	qse_scm_ent_t* t;
+	qse_scm_ent_t* f;
 
 	/* global environment */
-	qse_scm_val_t* genv;
+	qse_scm_ent_t* genv;
+
+	/* symbol table */
+	qse_scm_ent_t* symtab;
 
 	/* registers */
 	struct
 	{
-		qse_scm_val_t* arg; /* function arguments */
-		qse_scm_val_t* env; /* current environment */
-		qse_scm_val_t* cod; /* current code */
-		qse_scm_val_t* dmp; /* stack register for next evaluation */
+		qse_scm_ent_t* arg; /* function arguments */
+		qse_scm_ent_t* env; /* current environment */
+		qse_scm_ent_t* cod; /* current code */
+		qse_scm_ent_t* dmp; /* stack register for next evaluation */
 	} reg;
 
 	struct
 	{
-		qse_scm_vbl_t* vbl;  /* value block list */
-		qse_scm_val_t* free;
+		qse_scm_enb_t* ebl;  /* entity block list */
+		qse_scm_ent_t* free;
 	} mem;
 };
 
diff --git a/qse/lib/sed/Makefile.in b/qse/lib/sed/Makefile.in
index a992b932..3d7b873f 100644
--- a/qse/lib/sed/Makefile.in
+++ b/qse/lib/sed/Makefile.in
@@ -136,6 +136,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/regress/Makefile.in b/qse/regress/Makefile.in
index 2a0b23f6..79f67ff3 100644
--- a/qse/regress/Makefile.in
+++ b/qse/regress/Makefile.in
@@ -112,6 +112,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/regress/awk/Makefile.in b/qse/regress/awk/Makefile.in
index fcea42a9..83e84b61 100644
--- a/qse/regress/awk/Makefile.in
+++ b/qse/regress/awk/Makefile.in
@@ -74,6 +74,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/regress/sed/Makefile.in b/qse/regress/sed/Makefile.in
index 7cc26b71..31eb670f 100644
--- a/qse/regress/sed/Makefile.in
+++ b/qse/regress/sed/Makefile.in
@@ -74,6 +74,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/Makefile.in b/qse/samples/Makefile.in
index 30bb4216..3a6467c1 100644
--- a/qse/samples/Makefile.in
+++ b/qse/samples/Makefile.in
@@ -112,6 +112,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/awk/Makefile.in b/qse/samples/awk/Makefile.in
index ba4e253a..9b78545c 100644
--- a/qse/samples/awk/Makefile.in
+++ b/qse/samples/awk/Makefile.in
@@ -147,6 +147,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/cmn/Makefile.in b/qse/samples/cmn/Makefile.in
index cf8dd77d..b479ad87 100644
--- a/qse/samples/cmn/Makefile.in
+++ b/qse/samples/cmn/Makefile.in
@@ -165,6 +165,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/cut/Makefile.in b/qse/samples/cut/Makefile.in
index 8bd03a9e..2e61d620 100644
--- a/qse/samples/cut/Makefile.in
+++ b/qse/samples/cut/Makefile.in
@@ -96,6 +96,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/http/Makefile.in b/qse/samples/http/Makefile.in
index e479e217..d68d7f23 100644
--- a/qse/samples/http/Makefile.in
+++ b/qse/samples/http/Makefile.in
@@ -96,6 +96,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
diff --git a/qse/samples/http/http01.c b/qse/samples/http/http01.c
index e8997269..3457363e 100644
--- a/qse/samples/http/http01.c
+++ b/qse/samples/http/http01.c
@@ -1,4 +1,4 @@
-#include <qse/utl/http.h>
+#include <qse/http/http.h>
 #include <qse/cmn/mem.h>
 #include <qse/cmn/str.h>
 #include <qse/cmn/stdio.h>
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
+#include <netinet/in.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>
@@ -20,12 +21,9 @@ typedef struct client_array_t client_array_t;
 
 struct client_t
 {
-	int                fd;
-	struct sockaddr_in addr;
-	qse_http_t*        http;
-
-	pending_requests???
-	action_t           actions[10];
+	int                     fd;
+	struct sockaddr_storage addr;
+	qse_http_t*             http;
 };
 
 struct client_array_t
@@ -50,28 +48,43 @@ int handle_request (qse_http_t* http, qse_http_req_t* req)
 
 	if (req->method == QSE_HTTP_REQ_GET)
 	{
-	#if 0
-		/* determine what to do with the request 
-		 * and set the right action for it */
-		xtn->action.type = SENDFILE;
-		xtn->action.data.sendfile.path = filename;
-		xtn->action.data.sendfile.ifnewer = xxxx;
-	#endif
+#if 0
+		qse_http_rep_t* rep;
 
-	#if 0
 		int fd = open (req->path.ptr, O_RDONLY);
 		if (fd <= -1)
 		{
+			qse_http_addtext (http, 
+				"<html><title>FILE NOT FOUND</title><body></body></html>");
 		}
 		else
 		{
+		#if 0
+			qse_http_addheader (
+				http, "Content-Type", detect_file_type(req->path.ptr)
+			);
+
+			qse_http_addtext (http, .....);
+			qse_http_adddata (http, 
+
+			qse_http_addoutputdata (http, fd);
+		#endif
+
+			/*
 			struct stat st;
 
 			fstat (fd, &st);
 			sendfile (xtn->array->data[xtn->index].fd, fd, NULL, st.st_size);
 			close (fd);
+			*/
 		}	
-	#endif
+
+		rep = qse_http_emit (http);
+		if (rep == NULL)
+		{
+			/* ERROR */
+		}
+#endif
 	}
 
 	return 0;
@@ -116,18 +129,18 @@ qse_http_reqcbs_t http_reqcbs =
 int mkserver (const char* portstr)
 {
 	int s, flag, port = atoi(portstr);
-	struct sockaddr_in addr;
+	struct sockaddr_in6 addr;
 	
-	s = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
+	s = socket (PF_INET6, SOCK_STREAM, IPPROTO_TCP);
 	if (s <= -1) return -1;
 
 	flag = 1;
 	setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));
 
 	memset (&addr, 0, sizeof(addr));
-	addr.sin_family = AF_INET;
-	addr.sin_addr.s_addr = htonl (INADDR_ANY);
-	addr.sin_port = htons (port);
+	addr.sin6_family = AF_INET6;
+	addr.sin6_port = htons(port);
+	inet_pton (AF_INET6, "::1", &addr.sin6_addr);
 
 	if (bind (s, (struct sockaddr*)&addr, sizeof(addr)) <= -1)
 	{
@@ -183,7 +196,7 @@ static void fini_client_array (client_array_t* array)
 }
 
 static client_t* insert_into_client_array (
-	client_array_t* array, int fd, struct sockaddr_in* addr)
+	client_array_t* array, int fd, struct sockaddr_storage* addr)
 {
 	http_xtn_t* xtn;
 
@@ -219,7 +232,8 @@ static client_t* insert_into_client_array (
 	return &array->data[fd];
 }
 
-static int make_fd_set_from_client_array (client_array_t* ca, int s, fd_set* r, fd_set* w)
+static int make_fd_set_from_client_array (
+	client_array_t* ca, int s, fd_set* r, fd_set* w)
 {
 	int fd, max = s;
 
@@ -285,48 +299,23 @@ int main (int argc, char* argv[])
 		fd_set r, w;
 		struct timeval tv;
 
-	#if 0
-		if (ca->need_cpu)
-		{
-			tv.tv_sec = 0;
-			tv.tv_usec = 0;
-		}
-		else
-		{
-	#endif
-			tv.tv_sec = 1;
-			tv.tv_usec = 0;
-	#if 0
-		}
-	#endif
+		tv.tv_sec = 1;
+		tv.tv_usec = 0;
 
 		max = make_fd_set_from_client_array (&ca, s, &r, &w);
 		n = select (max + 1, &r, &w, NULL, &tv);
 		if (n <= -1)
 		{
 			if (errno == EINTR) continue;
-
 			qse_fprintf (QSE_STDERR, QSE_T("Error: select returned failure\n"));
 			break;
 		}
-		if (n == 0) 
-		{
-	#if 0
-			/* no input and no writable sockets.
-			 */
-			for (fd = 0; fd < ca.capa; fd++)
-			{
-				/* process internal things */
-				qse_http_pump (ca.data[fd].http);
-			}
-	#endif
-			continue;
-		}
+		if (n == 0) continue;
 
 		if (FD_ISSET(s, &r))
 		{
 			int flag;
-			struct sockaddr_in addr;
+			struct sockaddr_storage addr;
 			socklen_t addrlen = sizeof(addr);
 			int c = accept (s, (struct sockaddr*)&addr, &addrlen);
 			if (c <= -1)
@@ -408,7 +397,7 @@ int main (int argc, char* argv[])
 			}
 
 		#if 0
-			if (FD_ISSET(client->fd, &w) && client->has_data_to_send)
+			if (FD_ISSET(client->fd, &w) && client->rep)
 			{
 				/* ready to send output */
 				if (handle_output (xxxxx) <= -1)
diff --git a/qse/samples/sed/Makefile.in b/qse/samples/sed/Makefile.in
index 77f1d045..16d8e589 100644
--- a/qse/samples/sed/Makefile.in
+++ b/qse/samples/sed/Makefile.in
@@ -118,6 +118,7 @@ DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+ECHO = @ECHO@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@