enhanced --enable-unicode to accept ucs4 and ucs2 in addition to yes/no.

redefined the moo_uch_t type to follow the enable-unicode value

configure

@@ -803,7 +803,6 @@ with_gnu_ld
 with_sysroot
 enable_libtool_lock
 enable_debug
-enable_override_uch
 enable_unicode
 enable_cxx
 enable_dynamic_module
@@ -1453,10 +1452,9 @@ Optional Features:
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-debug          build the library in the debug mode (default. no)
-  --enable-override-uch   Use the specified unicode character type (default.
-                          no)
   --enable-unicode        Use the unicode character type as the default
-                          character type (default. yes)
+                          character type. one of yes, no, ucs2, ucs4 (default.
+                          yes)
   --enable-cxx            build the library for C++ if a C++ compiler is
                           available (default. yes)
   --enable-dynamic-module enable dynamic module capability(default. yes)
@@ -19417,44 +19415,6 @@ $as_echo "#define HCL_BUILD_RELEASE 1" >>confdefs.h
 
 fi
 
-
-# Check whether --enable-override-uch was given.
-if test "${enable_override_uch+set}" = set; then :
-  enableval=$enable_override_uch; enable_override_uch=$enableval
-else
-  enable_override_uch=no
-
-fi
-
-if test "${enable_override_uch}" = "wchar_t"
-then
-	test "${ac_cv_sizeof_wchar_t}" = "0" && enable_override_uch=no
-	test "${ac_cv_sizeof_wchar_t}" = "1" && enable_override_uch=no
-elif test "${enable_override_uch}" = "char16_t"
-then
-	test "${ac_cv_sizeof_char16_t}" = "0" && enable_override_uch=no
-elif test "${enable_override_uch}" = "char32_t"
-then
-	test "${ac_cv_sizeof_char32_t}" = "0" && enable_override_uch=no
-fi
-
-if test "${enable_override_uch}" = "wchar_t"
-then
-
-$as_echo "#define HCL_OVERRIDE_UCH_TYPE wchar_t" >>confdefs.h
-
-elif test "${enable_override_uch}" = "char16_t"
-then
-
-$as_echo "#define HCL_OVERRIDE_UCH_TYPE char16_t" >>confdefs.h
-
-elif test "${enable_override_uch}" = "char32_t"
-then
-
-$as_echo "#define HCL_OVERRIDE_UCH_TYPE char32_t" >>confdefs.h
-
-fi
-
 # Check whether --enable-unicode was given.
 if test "${enable_unicode+set}" = set; then :
   enableval=$enable_unicode; enable_unicode=$enableval
@@ -19468,6 +19428,16 @@ then
 
 $as_echo "#define HCL_ENABLE_UNICODE 1" >>confdefs.h
 
+elif test "${enable_unicode}" = "ucs2"
+then
+
+$as_echo "#define HCL_ENABLE_UNICODE 2" >>confdefs.h
+
+elif test "${enable_unicode}" = "ucs4"
+then
+
+$as_echo "#define HCL_ENABLE_UNICODE 4" >>confdefs.h
+
 fi
 
 # Check whether --enable-cxx was given.

configure.ac

@@ -408,43 +408,20 @@ else
 	AC_SUBST(BUILD_MODE, "release")
 fi
 
-
-AC_ARG_ENABLE([override-uch],
-	[AS_HELP_STRING([--enable-override-uch],[Use the specified unicode character type (default. no)])],
-	enable_override_uch=$enableval,
-	enable_override_uch=no
-)
-if test "${enable_override_uch}" = "wchar_t"
-then
-	test "${ac_cv_sizeof_wchar_t}" = "0" && enable_override_uch=no
-	test "${ac_cv_sizeof_wchar_t}" = "1" && enable_override_uch=no
-elif test "${enable_override_uch}" = "char16_t"
-then
-	test "${ac_cv_sizeof_char16_t}" = "0" && enable_override_uch=no
-elif test "${enable_override_uch}" = "char32_t"
-then
-	test "${ac_cv_sizeof_char32_t}" = "0" && enable_override_uch=no
-fi
-
-if test "${enable_override_uch}" = "wchar_t"
-then
-	AC_DEFINE([HCL_OVERRIDE_UCH_TYPE],[wchar_t],[unicode character type])
-elif test "${enable_override_uch}" = "char16_t"
-then
-	AC_DEFINE([HCL_OVERRIDE_UCH_TYPE],[char16_t],[unicode character type])
-elif test "${enable_override_uch}" = "char32_t"
-then
-	AC_DEFINE([HCL_OVERRIDE_UCH_TYPE],[char32_t],[unicode character type])
-fi
-
 AC_ARG_ENABLE([unicode], 
-	[AS_HELP_STRING([--enable-unicode],[Use the unicode character type as the default character type (default. yes)])],
+	[AS_HELP_STRING([--enable-unicode],[Use the unicode character type as the default character type. one of yes, no, ucs2, ucs4 (default. yes)])],
 	enable_unicode=$enableval,
 	enable_unicode=yes
 )
 if test "${enable_unicode}" = "yes"
 then
 	AC_DEFINE([HCL_ENABLE_UNICODE],[1],[Use the unicode character type as the default character type])	
+elif test "${enable_unicode}" = "ucs2"
+then
+	AC_DEFINE([HCL_ENABLE_UNICODE],[2],[Use the unicode character type as the default character type])	
+elif test "${enable_unicode}" = "ucs4"
+then
+	AC_DEFINE([HCL_ENABLE_UNICODE],[4],[Use the unicode character type as the default character type])	
 fi
 
 AC_ARG_ENABLE([cxx], 

lib/hcl-cfg.h.in

@@ -243,9 +243,6 @@
 /* MB_LEN_MAX */
 #undef HCL_MBLEN_MAX
 
-/* unicode character type */
-#undef HCL_OVERRIDE_UCH_TYPE
-
 /* Author */
 #undef HCL_PACKAGE_AUTHOR
 

lib/hcl-cmn.h

@@ -280,15 +280,26 @@ typedef unsigned char           hcl_bchu_t; /* unsigned version of hcl_bch_t for
 #define HCL_SIZEOF_BCH_T HCL_SIZEOF_CHAR
 #define HCL_SIZEOF_BCI_T HCL_SIZEOF_INT
 
-#if defined(__GNUC__) && defined(__CHAR16_TYPE__)
+#if defined(HCL_ENABLE_UNICODE) && (HCL_ENABLE_UNICODE == 4)
-/* TODO ... wchar_t???, char16_t? char32_t? */
+#	if defined(__GNUC__) && defined(__CHAR32_TYPE__)
-typedef __CHAR16_TYPE__         hcl_uch_t; 
+	typedef __CHAR32_TYPE__    hcl_uch_t;
+#	else
+	typedef hcl_uint32_t       hcl_uch_t;
+#	endif
+	typedef hcl_uint32_t       hcl_uchu_t; /* same as hcl_uch_t as it is already unsigned */
+#	define HCL_SIZEOF_UCH_T 4
+
+#elif defined(__GNUC__) && defined(__CHAR16_TYPE__)
+	typedef __CHAR16_TYPE__    hcl_uch_t; 
+	typedef hcl_uint16_t       hcl_uchu_t; /* same as hcl_uch_t as it is already unsigned */
+#	define HCL_SIZEOF_UCH_T 2
 #else
-typedef hcl_uint16_t            hcl_uch_t;
+	typedef hcl_uint16_t       hcl_uch_t;
+	typedef hcl_uint16_t       hcl_uchu_t; /* same as hcl_uch_t as it is already unsigned */
+#	define HCL_SIZEOF_UCH_T 2
 #endif
+
 typedef hcl_int32_t             hcl_uci_t;
-typedef hcl_uint16_t            hcl_uchu_t; /* same as hcl_uch_t as it is already unsigned */
-#define HCL_SIZEOF_UCH_T 2
 #define HCL_SIZEOF_UCI_T 4
 
 typedef hcl_uint8_t             hcl_oob_t;