diff --git a/configure b/configure
index 11e16ac..6f1e1b5 100755
--- a/configure
+++ b/configure
@@ -651,6 +651,8 @@ HCL_SIZEOF_LONG_LONG
 HCL_SIZEOF_CHAR32_T
 HCL_SIZEOF_CHAR16_T
 HCL_SIZEOF_WCHAR_T
+ENABLE_HCLC_FALSE
+ENABLE_HCLC_TRUE
 ENABLE_HCLS_FALSE
 ENABLE_HCLS_TRUE
 ENABLE_LIBLTDL_FALSE
@@ -819,6 +821,7 @@ enable_dynamic_module
 enable_static_module
 enable_libltdl
 enable_hcls
+enable_hclc
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1485,6 +1488,7 @@ Optional Features:
                           library(default. no)
   --enable-libltdl        use libltdl(default. no)
   --enable-hcls           build libhcls and hcls(default. no)
+  --enable-hclc           build libhclc and hclc(default. no)
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -21145,6 +21149,23 @@ else
 fi
 
 
+# Check whether --enable-hclc was given.
+if test "${enable_hclc+set}" = set; then :
+  enableval=$enable_hclc; enable_hclc_is=$enableval
+else
+  enable_hclc_is=no
+
+fi
+
+ if test "${enable_hclc_is}" = "yes"; then
+  ENABLE_HCLC_TRUE=
+  ENABLE_HCLC_FALSE='#'
+else
+  ENABLE_HCLC_TRUE='#'
+  ENABLE_HCLC_FALSE=
+fi
+
+
 HCL_SIZEOF_WCHAR_T=$ac_cv_sizeof_wchar_t
 
 HCL_SIZEOF_CHAR16_T=$ac_cv_sizeof_char16_t
@@ -21347,6 +21368,10 @@ if test -z "${ENABLE_HCLS_TRUE}" && test -z "${ENABLE_HCLS_FALSE}"; then
   as_fn_error $? "conditional \"ENABLE_HCLS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${ENABLE_HCLC_TRUE}" && test -z "${ENABLE_HCLC_FALSE}"; then
+  as_fn_error $? "conditional \"ENABLE_HCLC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 : "${CONFIG_STATUS=./config.status}"
 ac_write_fail=0
diff --git a/configure.ac b/configure.ac
index b0f26f7..f825e42 100644
--- a/configure.ac
+++ b/configure.ac
@@ -643,6 +643,14 @@ AC_ARG_ENABLE([hcls],
 )
 AM_CONDITIONAL(ENABLE_HCLS, test "${enable_hcls_is}" = "yes")
 
+dnl ===== enable-hclc =====
+AC_ARG_ENABLE([hclc],
+	[AS_HELP_STRING([--enable-hclc],[build libhclc and hclc(default. no)])],
+	enable_hclc_is=$enableval,
+	enable_hclc_is=no
+)
+AM_CONDITIONAL(ENABLE_HCLC, test "${enable_hclc_is}" = "yes")
+
 AC_SUBST(HCL_SIZEOF_WCHAR_T, $ac_cv_sizeof_wchar_t)
 AC_SUBST(HCL_SIZEOF_CHAR16_T, $ac_cv_sizeof_char16_t)
 AC_SUBST(HCL_SIZEOF_CHAR32_T, $ac_cv_sizeof_char32_t)
diff --git a/lib/Makefile.am b/lib/Makefile.am
index b5e9519..5d0e7f7 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -81,6 +81,15 @@ libhcls_la_LIBADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS)
 libhcls_la_DEPENDENCIES =
 endif
 
+if ENABLE_HCLC
+pkglib_LTLIBRARIES += libhclc.la
+libhclc_la_SOURCES = hcl-c.c hcl-c.h
+libhclc_la_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
+libhclc_la_LDFLAGS = $(LDFLAGS_LIB_COMMON)
+libhclc_la_LIBADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS)
+libhclc_la_DEPENDENCIES =
+endif
+
 if ENABLE_STATIC_MODULE
 libhcl_la_LIBADD += -lhcl-arr
 libhcl_la_DEPENDENCIES += $(abs_builddir)/../mod/libhcl-arr.la
@@ -101,15 +110,26 @@ endif
 
 if ENABLE_HCLS
 bin_PROGRAMS += hcls
-hcls_SOURCES = main2.c
+hcls_SOURCES = main-s.c
 hcls_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
 hcls_LDFLAGS = $(LDFLAGS_LIB_COMMON)
-hcls_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhcls #-ldyncall_s
+hcls_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhcls
 if ENABLE_STATIC_MODULE
 hcls_DEPENDENCIES = libhcl.la libhcls.la
 endif
 endif
 
+if ENABLE_HCLC
+bin_PROGRAMS += hclc
+hclc_SOURCES = main-c.c
+hclc_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
+hclc_LDFLAGS = $(LDFLAGS_LIB_COMMON)
+hclc_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhclc
+if ENABLE_STATIC_MODULE
+hclc_DEPENDENCIES = libhcl.la libhclc.la
+endif
+endif
+
 install-data-hook:
 	@echo "#ifndef _HCL_CFG_H_" > "$(DESTDIR)$(pkgincludedir)/hcl-cfg.h"
 	@echo "#define _HCL_CFG_H_" >> "$(DESTDIR)$(pkgincludedir)/hcl-cfg.h"
diff --git a/lib/Makefile.in b/lib/Makefile.in
index 349b897..2883f01 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -91,16 +91,20 @@ host_triplet = @host@
 @ENABLE_LIBLTDL_TRUE@am__append_1 = $(LTDL_LIBS)
 @ENABLE_LIBLTDL_FALSE@am__append_2 = $(DL_LIBS)
 @ENABLE_HCLS_TRUE@am__append_3 = libhcls.la
-@ENABLE_STATIC_MODULE_TRUE@am__append_4 = -lhcl-arr -lhcl-dic \
+@ENABLE_HCLC_TRUE@am__append_4 = libhclc.la
+@ENABLE_STATIC_MODULE_TRUE@am__append_5 = -lhcl-arr -lhcl-dic \
 @ENABLE_STATIC_MODULE_TRUE@	-lhcl-str
-@ENABLE_STATIC_MODULE_TRUE@am__append_5 = $(abs_builddir)/../mod/libhcl-arr.la \
+@ENABLE_STATIC_MODULE_TRUE@am__append_6 = $(abs_builddir)/../mod/libhcl-arr.la \
 @ENABLE_STATIC_MODULE_TRUE@	$(abs_builddir)/../mod/libhcl-dic.la \
 @ENABLE_STATIC_MODULE_TRUE@	$(abs_builddir)/../mod/libhcl-str.la
-bin_PROGRAMS = hcl$(EXEEXT) $(am__EXEEXT_1)
+bin_PROGRAMS = hcl$(EXEEXT) $(am__EXEEXT_1) $(am__EXEEXT_2)
 @ENABLE_STATIC_MODULE_FALSE@hcl_DEPENDENCIES = $(am__DEPENDENCIES_4)
-@ENABLE_HCLS_TRUE@am__append_6 = hcls
+@ENABLE_HCLS_TRUE@am__append_7 = hcls
 @ENABLE_HCLS_TRUE@@ENABLE_STATIC_MODULE_FALSE@hcls_DEPENDENCIES = $(am__DEPENDENCIES_4) \
 @ENABLE_HCLS_TRUE@@ENABLE_STATIC_MODULE_FALSE@	$(am__DEPENDENCIES_1)
+@ENABLE_HCLC_TRUE@am__append_8 = hclc
+@ENABLE_HCLC_TRUE@@ENABLE_STATIC_MODULE_FALSE@hclc_DEPENDENCIES = $(am__DEPENDENCIES_4) \
+@ENABLE_HCLC_TRUE@@ENABLE_STATIC_MODULE_FALSE@	$(am__DEPENDENCIES_1)
 subdir = lib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_sign.m4 \
@@ -168,6 +172,13 @@ am__v_lt_1 =
 libhcl_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libhcl_la_LDFLAGS) $(LDFLAGS) -o $@
+am__libhclc_la_SOURCES_DIST = hcl-c.c hcl-c.h
+@ENABLE_HCLC_TRUE@am_libhclc_la_OBJECTS = libhclc_la-hcl-c.lo
+libhclc_la_OBJECTS = $(am_libhclc_la_OBJECTS)
+libhclc_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libhclc_la_LDFLAGS) $(LDFLAGS) -o $@
+@ENABLE_HCLC_TRUE@am_libhclc_la_rpath = -rpath $(pkglibdir)
 am__libhcls_la_SOURCES_DIST = hcl-s.c hcl-s.h
 @ENABLE_HCLS_TRUE@am_libhcls_la_OBJECTS = libhcls_la-hcl-s.lo
 libhcls_la_OBJECTS = $(am_libhcls_la_OBJECTS)
@@ -176,14 +187,21 @@ libhcls_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(libhcls_la_LDFLAGS) $(LDFLAGS) -o $@
 @ENABLE_HCLS_TRUE@am_libhcls_la_rpath = -rpath $(pkglibdir)
 @ENABLE_HCLS_TRUE@am__EXEEXT_1 = hcls$(EXEEXT)
+@ENABLE_HCLC_TRUE@am__EXEEXT_2 = hclc$(EXEEXT)
 PROGRAMS = $(bin_PROGRAMS)
 am_hcl_OBJECTS = hcl-main.$(OBJEXT)
 hcl_OBJECTS = $(am_hcl_OBJECTS)
 hcl_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(hcl_LDFLAGS) $(LDFLAGS) -o $@
-am__hcls_SOURCES_DIST = main2.c
-@ENABLE_HCLS_TRUE@am_hcls_OBJECTS = hcls-main2.$(OBJEXT)
+am__hclc_SOURCES_DIST = main-c.c
+@ENABLE_HCLC_TRUE@am_hclc_OBJECTS = hclc-main-c.$(OBJEXT)
+hclc_OBJECTS = $(am_hclc_OBJECTS)
+hclc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(hclc_LDFLAGS) $(LDFLAGS) -o $@
+am__hcls_SOURCES_DIST = main-s.c
+@ENABLE_HCLS_TRUE@am_hcls_OBJECTS = hcls-main-s.$(OBJEXT)
 hcls_OBJECTS = $(am_hcls_OBJECTS)
 hcls_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
@@ -222,10 +240,12 @@ AM_V_CCLD = $(am__v_CCLD_@AM_V@)
 am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
 am__v_CCLD_0 = @echo "  CCLD    " $@;
 am__v_CCLD_1 = 
-SOURCES = $(libhcl_la_SOURCES) $(libhcls_la_SOURCES) $(hcl_SOURCES) \
+SOURCES = $(libhcl_la_SOURCES) $(libhclc_la_SOURCES) \
+	$(libhcls_la_SOURCES) $(hcl_SOURCES) $(hclc_SOURCES) \
 	$(hcls_SOURCES)
-DIST_SOURCES = $(libhcl_la_SOURCES) $(am__libhcls_la_SOURCES_DIST) \
-	$(hcl_SOURCES) $(am__hcls_SOURCES_DIST)
+DIST_SOURCES = $(libhcl_la_SOURCES) $(am__libhclc_la_SOURCES_DIST) \
+	$(am__libhcls_la_SOURCES_DIST) $(hcl_SOURCES) \
+	$(am__hclc_SOURCES_DIST) $(am__hcls_SOURCES_DIST)
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
@@ -433,7 +453,7 @@ pkginclude_HEADERS = \
 	hcl-utl.h \
 	hcl.h
 
-pkglib_LTLIBRARIES = libhcl.la $(am__append_3)
+pkglib_LTLIBRARIES = libhcl.la $(am__append_3) $(am__append_4)
 libhcl_la_SOURCES = \
 	hcl-prv.h \
 	logfmtv.h \
@@ -463,23 +483,33 @@ libhcl_la_SOURCES = \
 
 libhcl_la_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
 libhcl_la_LDFLAGS = $(LDFLAGS_LIB_COMMON)
-libhcl_la_LIBADD = $(LIBADD_LIB_COMMON) $(am__append_4)
-libhcl_la_DEPENDENCIES = $(am__append_5)
+libhcl_la_LIBADD = $(LIBADD_LIB_COMMON) $(am__append_5)
+libhcl_la_DEPENDENCIES = $(am__append_6)
 @ENABLE_HCLS_TRUE@libhcls_la_SOURCES = hcl-s.c hcl-s.h
 @ENABLE_HCLS_TRUE@libhcls_la_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
 @ENABLE_HCLS_TRUE@libhcls_la_LDFLAGS = $(LDFLAGS_LIB_COMMON)
 @ENABLE_HCLS_TRUE@libhcls_la_LIBADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS)
 @ENABLE_HCLS_TRUE@libhcls_la_DEPENDENCIES = 
+@ENABLE_HCLC_TRUE@libhclc_la_SOURCES = hcl-c.c hcl-c.h
+@ENABLE_HCLC_TRUE@libhclc_la_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
+@ENABLE_HCLC_TRUE@libhclc_la_LDFLAGS = $(LDFLAGS_LIB_COMMON)
+@ENABLE_HCLC_TRUE@libhclc_la_LIBADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS)
+@ENABLE_HCLC_TRUE@libhclc_la_DEPENDENCIES = 
 hcl_SOURCES = main.c 
 hcl_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
 hcl_LDFLAGS = $(LDFLAGS_LIB_COMMON)
 hcl_LDADD = $(LIBADD_LIB_COMMON) -lhcl #-ldyncall_s
 @ENABLE_STATIC_MODULE_TRUE@hcl_DEPENDENCIES = libhcl.la
-@ENABLE_HCLS_TRUE@hcls_SOURCES = main2.c
+@ENABLE_HCLS_TRUE@hcls_SOURCES = main-s.c
 @ENABLE_HCLS_TRUE@hcls_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
 @ENABLE_HCLS_TRUE@hcls_LDFLAGS = $(LDFLAGS_LIB_COMMON)
-@ENABLE_HCLS_TRUE@hcls_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhcls #-ldyncall_s
+@ENABLE_HCLS_TRUE@hcls_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhcls
 @ENABLE_HCLS_TRUE@@ENABLE_STATIC_MODULE_TRUE@hcls_DEPENDENCIES = libhcl.la libhcls.la
+@ENABLE_HCLC_TRUE@hclc_SOURCES = main-c.c
+@ENABLE_HCLC_TRUE@hclc_CPPFLAGS = $(CPPFLAGS_LIB_COMMON)
+@ENABLE_HCLC_TRUE@hclc_LDFLAGS = $(LDFLAGS_LIB_COMMON)
+@ENABLE_HCLC_TRUE@hclc_LDADD = $(LIBADD_LIB_COMMON) $(PTHREAD_LIBS) -lhcl -lhclc
+@ENABLE_HCLC_TRUE@@ENABLE_STATIC_MODULE_TRUE@hclc_DEPENDENCIES = libhcl.la libhclc.la
 all: hcl-cfg.h
 	$(MAKE) $(AM_MAKEFLAGS) all-am
 
@@ -568,6 +598,9 @@ clean-pkglibLTLIBRARIES:
 libhcl.la: $(libhcl_la_OBJECTS) $(libhcl_la_DEPENDENCIES) $(EXTRA_libhcl_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(libhcl_la_LINK) -rpath $(pkglibdir) $(libhcl_la_OBJECTS) $(libhcl_la_LIBADD) $(LIBS)
 
+libhclc.la: $(libhclc_la_OBJECTS) $(libhclc_la_DEPENDENCIES) $(EXTRA_libhclc_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libhclc_la_LINK) $(am_libhclc_la_rpath) $(libhclc_la_OBJECTS) $(libhclc_la_LIBADD) $(LIBS)
+
 libhcls.la: $(libhcls_la_OBJECTS) $(libhcls_la_DEPENDENCIES) $(EXTRA_libhcls_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(libhcls_la_LINK) $(am_libhcls_la_rpath) $(libhcls_la_OBJECTS) $(libhcls_la_LIBADD) $(LIBS)
 install-binPROGRAMS: $(bin_PROGRAMS)
@@ -624,6 +657,10 @@ hcl$(EXEEXT): $(hcl_OBJECTS) $(hcl_DEPENDENCIES) $(EXTRA_hcl_DEPENDENCIES)
 	@rm -f hcl$(EXEEXT)
 	$(AM_V_CCLD)$(hcl_LINK) $(hcl_OBJECTS) $(hcl_LDADD) $(LIBS)
 
+hclc$(EXEEXT): $(hclc_OBJECTS) $(hclc_DEPENDENCIES) $(EXTRA_hclc_DEPENDENCIES) 
+	@rm -f hclc$(EXEEXT)
+	$(AM_V_CCLD)$(hclc_LINK) $(hclc_OBJECTS) $(hclc_LDADD) $(LIBS)
+
 hcls$(EXEEXT): $(hcls_OBJECTS) $(hcls_DEPENDENCIES) $(EXTRA_hcls_DEPENDENCIES) 
 	@rm -f hcls$(EXEEXT)
 	$(AM_V_CCLD)$(hcls_LINK) $(hcls_OBJECTS) $(hcls_LDADD) $(LIBS)
@@ -635,7 +672,8 @@ distclean-compile:
 	-rm -f *.tab.c
 
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hcl-main.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hcls-main2.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hclc-main-c.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hcls-main-s.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-bigint.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-comp.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-debug.Plo@am__quote@
@@ -657,6 +695,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-tmr.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-utf8.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcl_la-utl.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhclc_la-hcl-c.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libhcls_la-hcl-s.Plo@am__quote@
 
 .c.o:
@@ -830,6 +869,13 @@ libhcl_la-utl.lo: utl.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libhcl_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libhcl_la-utl.lo `test -f 'utl.c' || echo '$(srcdir)/'`utl.c
 
+libhclc_la-hcl-c.lo: hcl-c.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libhclc_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libhclc_la-hcl-c.lo -MD -MP -MF $(DEPDIR)/libhclc_la-hcl-c.Tpo -c -o libhclc_la-hcl-c.lo `test -f 'hcl-c.c' || echo '$(srcdir)/'`hcl-c.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libhclc_la-hcl-c.Tpo $(DEPDIR)/libhclc_la-hcl-c.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='hcl-c.c' object='libhclc_la-hcl-c.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libhclc_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libhclc_la-hcl-c.lo `test -f 'hcl-c.c' || echo '$(srcdir)/'`hcl-c.c
+
 libhcls_la-hcl-s.lo: hcl-s.c
 @am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libhcls_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libhcls_la-hcl-s.lo -MD -MP -MF $(DEPDIR)/libhcls_la-hcl-s.Tpo -c -o libhcls_la-hcl-s.lo `test -f 'hcl-s.c' || echo '$(srcdir)/'`hcl-s.c
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libhcls_la-hcl-s.Tpo $(DEPDIR)/libhcls_la-hcl-s.Plo
@@ -851,19 +897,33 @@ hcl-main.obj: main.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcl_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hcl-main.obj `if test -f 'main.c'; then $(CYGPATH_W) 'main.c'; else $(CYGPATH_W) '$(srcdir)/main.c'; fi`
 
-hcls-main2.o: main2.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hcls-main2.o -MD -MP -MF $(DEPDIR)/hcls-main2.Tpo -c -o hcls-main2.o `test -f 'main2.c' || echo '$(srcdir)/'`main2.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hcls-main2.Tpo $(DEPDIR)/hcls-main2.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main2.c' object='hcls-main2.o' libtool=no @AMDEPBACKSLASH@
+hclc-main-c.o: main-c.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hclc_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hclc-main-c.o -MD -MP -MF $(DEPDIR)/hclc-main-c.Tpo -c -o hclc-main-c.o `test -f 'main-c.c' || echo '$(srcdir)/'`main-c.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hclc-main-c.Tpo $(DEPDIR)/hclc-main-c.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main-c.c' object='hclc-main-c.o' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hcls-main2.o `test -f 'main2.c' || echo '$(srcdir)/'`main2.c
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hclc_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hclc-main-c.o `test -f 'main-c.c' || echo '$(srcdir)/'`main-c.c
 
-hcls-main2.obj: main2.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hcls-main2.obj -MD -MP -MF $(DEPDIR)/hcls-main2.Tpo -c -o hcls-main2.obj `if test -f 'main2.c'; then $(CYGPATH_W) 'main2.c'; else $(CYGPATH_W) '$(srcdir)/main2.c'; fi`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hcls-main2.Tpo $(DEPDIR)/hcls-main2.Po
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main2.c' object='hcls-main2.obj' libtool=no @AMDEPBACKSLASH@
+hclc-main-c.obj: main-c.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hclc_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hclc-main-c.obj -MD -MP -MF $(DEPDIR)/hclc-main-c.Tpo -c -o hclc-main-c.obj `if test -f 'main-c.c'; then $(CYGPATH_W) 'main-c.c'; else $(CYGPATH_W) '$(srcdir)/main-c.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hclc-main-c.Tpo $(DEPDIR)/hclc-main-c.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main-c.c' object='hclc-main-c.obj' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hcls-main2.obj `if test -f 'main2.c'; then $(CYGPATH_W) 'main2.c'; else $(CYGPATH_W) '$(srcdir)/main2.c'; fi`
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hclc_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hclc-main-c.obj `if test -f 'main-c.c'; then $(CYGPATH_W) 'main-c.c'; else $(CYGPATH_W) '$(srcdir)/main-c.c'; fi`
+
+hcls-main-s.o: main-s.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hcls-main-s.o -MD -MP -MF $(DEPDIR)/hcls-main-s.Tpo -c -o hcls-main-s.o `test -f 'main-s.c' || echo '$(srcdir)/'`main-s.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hcls-main-s.Tpo $(DEPDIR)/hcls-main-s.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main-s.c' object='hcls-main-s.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hcls-main-s.o `test -f 'main-s.c' || echo '$(srcdir)/'`main-s.c
+
+hcls-main-s.obj: main-s.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT hcls-main-s.obj -MD -MP -MF $(DEPDIR)/hcls-main-s.Tpo -c -o hcls-main-s.obj `if test -f 'main-s.c'; then $(CYGPATH_W) 'main-s.c'; else $(CYGPATH_W) '$(srcdir)/main-s.c'; fi`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/hcls-main-s.Tpo $(DEPDIR)/hcls-main-s.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='main-s.c' object='hcls-main-s.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(hcls_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o hcls-main-s.obj `if test -f 'main-s.c'; then $(CYGPATH_W) 'main-s.c'; else $(CYGPATH_W) '$(srcdir)/main-s.c'; fi`
 
 mostlyclean-libtool:
 	-rm -f *.lo
diff --git a/lib/hcl-c.c b/lib/hcl-c.c
index da18d27..efc683e 100644
--- a/lib/hcl-c.c
+++ b/lib/hcl-c.c
@@ -25,3 +25,206 @@
  */
 
 #include "hcl-c.h"
+#include "hcl-prv.h"
+
+
+struct hcl_client_proto_t
+{
+	hcl_client_t* client;
+
+	struct
+	{
+		hcl_bch_t* ptr;
+		hcl_oow_t len;
+		hcl_oow_t capa;
+	} req;
+	
+	struct
+	{
+		hcl_ooch_t* ptr;
+		hcl_oow_t len;
+		hcl_oow_t capa;
+	} rep;
+};
+
+struct hcl_client_t
+{
+	hcl_mmgr_t* mmgr;
+	hcl_cmgr_t* cmgr;
+	/*hcl_t* dummy_hcl;*/
+};
+
+/* ========================================================================= */
+
+
+static void proto_start_request (hcl_client_proto_t* proto)
+{
+	proto->req.len = 0;
+}
+
+
+static void proto_feed_request_data (hcl_client_proto_t* proto, xxxx);
+{
+}
+
+
+static int proto_end_request (hcl_client_proto_t* proto)
+{
+	if (proto->req.len <= 0) return -1;
+
+	return 0;
+}
+
+
+static void proto_start_response (hcl_client_proto_t* proto)
+{
+}
+
+static void proto_feed_reply_data (hcl_client_proto_t* proto, const hcl_bch_t* ptr, hcl_oow_t len)
+{
+	const hcl_bch_t* end = ptr + len;
+	while (ptr < end)
+	{
+		hcl_bch_t b = *ptr++;
+
+		switch (b)
+		{
+			case '\0':
+		}
+	}
+}
+
+/* ========================================================================= */
+
+hcl_client_t* hcl_client_open (hcl_mmgr_t* mmgr, hcl_oow_t xtnsize, hcl_errnum_t* errnum)
+{
+	hcl_client_t* client;
+#if 0
+	hcl_t* hcl;
+	hcl_vmprim_t vmprim;
+	hcl_tmr_t* tmr;
+	dummy_hcl_xtn_t* xtn;
+	int pfd[2], fcv;
+	unsigned int trait;
+#endif
+
+	client = (hcl_client_t*)HCL_MMGR_ALLOC(mmgr, HCL_SIZEOF(*client) + xtnsize);
+	if (!client) 
+	{
+		if (errnum) *errnum = HCL_ESYSMEM;
+		return HCL_NULL;
+	}
+
+#if 0
+	HCL_MEMSET (&vmprim, 0, HCL_SIZEOF(vmprim));
+	vmprim.log_write = log_write_for_dummy;
+	vmprim.syserrstrb = syserrstrb;
+	vmprim.dl_open = dl_open;
+	vmprim.dl_close = dl_close;
+	vmprim.dl_getsym = dl_getsym;
+	vmprim.vm_gettime = vm_gettime;
+	vmprim.vm_sleep = vm_sleep;
+
+	hcl = hcl_open(mmgr, HCL_SIZEOF(*xtn), 2048, &vmprim, errnum);
+	if (!hcl) 
+	{
+		HCL_MMGR_FREE (mmgr, client);
+		return HCL_NULL;
+	}
+
+	tmr = hcl_tmr_open(hcl, 0, 1024); /* TOOD: make the timer's default size configurable */
+	if (!tmr)
+	{
+		hcl_close (hcl);
+		HCL_MMGR_FREE (mmgr, client);
+		return HCL_NULL;
+	}
+
+	if (pipe(pfd) <= -1)
+	{
+		hcl_tmr_close (tmr);
+		hcl_close (hcl);
+		HCL_MMGR_FREE (mmgr, client);
+		return HCL_NULL;
+	}
+
+#if defined(O_CLOEXEC)
+	fcv = fcntl(pfd[0], F_GETFD, 0);
+	if (fcv >= 0) fcntl(pfd[0], F_SETFD, fcv | O_CLOEXEC);
+	fcv = fcntl(pfd[1], F_GETFD, 0);
+	if (fcv >= 0) fcntl(pfd[1], F_SETFD, fcv | O_CLOEXEC);
+#endif
+#if defined(O_NONBLOCK)
+	fcv = fcntl(pfd[0], F_GETFL, 0);
+	if (fcv >= 0) fcntl(pfd[0], F_SETFL, fcv | O_NONBLOCK);
+	fcv = fcntl(pfd[1], F_GETFL, 0);
+	if (fcv >= 0) fcntl(pfd[1], F_SETFL, fcv | O_NONBLOCK);
+#endif
+	
+	xtn = (dummy_hcl_xtn_t*)hcl_getxtn(hcl);
+	xtn->client = client;
+
+	HCL_MEMSET (client, 0, HCL_SIZEOF(*client) + xtnsize);
+	client->mmgr = mmgr;
+	client->cmgr = hcl_get_utf8_cmgr();
+	client->prim = *prim;
+	client->dummy_hcl = hcl;
+	client->tmr = tmr;
+
+	client->cfg.logmask = ~0u;
+	client->cfg.worker_stack_size = 512000UL; 
+	client->cfg.actor_heap_size = 512000UL;
+
+	HCL_INITNTIME (&client->cfg.worker_idle_timeout, 0, 0);
+	HCL_INITNTIME (&client->cfg.actor_max_runtime, 0, 0);
+
+	client->mux_pipe[0] = pfd[0];
+	client->mux_pipe[1] = pfd[1];
+
+	client->wid_map.free_first = HCL_SERVER_WID_INVALID;
+	client->wid_map.free_last = HCL_SERVER_WID_INVALID;
+	
+	pthread_mutex_init (&client->worker_mutex, HCL_NULL);
+	pthread_mutex_init (&client->tmr_mutex, HCL_NULL);
+	pthread_mutex_init (&client->log_mutex, HCL_NULL);
+
+	/* the dummy hcl is used for this client to perform primitive operations
+	 * such as getting system time or logging. so the heap size doesn't 
+	 * need to be changed from the tiny value set above. */
+	hcl_setoption (client->dummy_hcl, HCL_LOG_MASK, &client->cfg.logmask);
+	hcl_setcmgr (client->dummy_hcl, client->cmgr);
+	hcl_getoption (client->dummy_hcl, HCL_TRAIT, &trait);
+#if defined(HCL_BUILD_DEBUG)
+	if (client->cfg.trait & HCL_SERVER_TRAIT_DEBUG_GC) trait |= HCL_DEBUG_GC;
+	if (client->cfg.trait & HCL_SERVER_TRAIT_DEBUG_BIGINT) trait |= HCL_DEBUG_BIGINT;
+#endif
+	hcl_setoption (client->dummy_hcl, HCL_TRAIT, &trait);
+	
+	
+#else
+
+	HCL_MEMSET (client, 0, HCL_SIZEOF(*client) + xtnsize);
+	client->mmgr = mmgr;
+	client->cmgr = hcl_get_utf8_cmgr();
+
+#endif
+
+	return client;
+}
+
+void hcl_client_close (hcl_client_t* client)
+{
+	HCL_MMGR_FREE (client->mmgr, client);
+}
+
+int hcl_client_start (hcl_client_t* client, const hcl_bch_t* addrs)
+{
+
+	/* connect */
+	/* send request */
+}
+
+
+int hcl_client_sendreq (hcl_client_t* client, const hcl_bch_t* addrs)
+{
+}
diff --git a/lib/hcl-c.h b/lib/hcl-c.h
index 3a36683..5e94c1c 100644
--- a/lib/hcl-c.h
+++ b/lib/hcl-c.h
@@ -30,4 +30,27 @@
 #include <hcl.h>
 
 
+typedef struct hcl_client_t hcl_client_t;
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+HCL_EXPORT hcl_client_t* hcl_client_open (
+	hcl_mmgr_t*        mmgr,
+	hcl_oow_t          xtnsize,
+	/*hcl_client_prim_t* prim,*/
+	hcl_errnum_t*      errnum
+);
+
+HCL_EXPORT void hcl_client_close (
+	hcl_client_t* client
+);
+
+
+#if defined(__cplusplus)
+}
+#endif
+
 #endif
diff --git a/lib/main2.c b/lib/main-s.c
similarity index 100%
rename from lib/main2.c
rename to lib/main-s.c