diff -Naur sary-ruby-1.2.0.orig//builder.c sary-ruby-1.2.0//builder.c
--- sary-ruby-1.2.0.orig//builder.c	2005-03-30 07:48:09.000000000 +0900
+++ sary-ruby-1.2.0//builder.c	2010-05-27 20:08:33.000000000 +0900
@@ -26,7 +26,6 @@
 #include <errno.h>
 #include "sary.h"
 #include "ruby.h"
-#include "version.h"
 
 #define GET_Builder(obj, dat) Data_Get_Struct(obj, SaryBuilder, dat)
 
@@ -63,21 +62,13 @@
     rb_scan_args(argc, argv, "11", &file_name, &array_name);
 
     Check_SafeStr(file_name);
-#if RUBY_VERSION_CODE >= 180
     file_name_ptr = StringValuePtr(file_name);
-#else
-    file_name_ptr = STR2CSTR(file_name);
-#endif
 
     if (array_name == Qnil)
         builder = sary_builder_new(file_name_ptr);
     else {
         Check_SafeStr(array_name);
-#if RUBY_VERSION_CODE >= 180
         array_name_ptr = StringValuePtr(array_name);
-#else
-        array_name_ptr = STR2CSTR(array_name);
-#endif
         builder = sary_builder_new2(file_name_ptr, array_name_ptr);
     }
     if (builder == NULL)
diff -Naur sary-ruby-1.2.0.orig//searcher.c sary-ruby-1.2.0//searcher.c
--- sary-ruby-1.2.0.orig//searcher.c	2005-03-30 07:48:09.000000000 +0900
+++ sary-ruby-1.2.0//searcher.c	2010-05-27 20:13:17.000000000 +0900
@@ -27,7 +27,13 @@
 #include <errno.h>
 #include "sary.h"
 #include "ruby.h"
-#include "version.h"
+
+#ifndef RARRAY_LEN
+#define RARRAY_LEN(a) RARRAY(a)->len
+#endif
+#ifndef RSTRING_LEN
+#define RSTRING_LEN(str) RSTRING(str)->len
+#endif
 
 #define GET_Searcher(obj, dat) Data_Get_Struct(obj, SarySearcher, dat)
 
@@ -82,21 +88,13 @@
     rb_scan_args(argc, argv, "11", &file_name, &array_name);
 
     Check_SafeStr(file_name);
-#if RUBY_VERSION_CODE >= 180
     file_name_ptr = StringValuePtr(file_name);
-#else
-    file_name_ptr = STR2CSTR(file_name);
-#endif  
 
     if (array_name == Qnil)
         searcher = sary_searcher_new(file_name_ptr);
     else {
         Check_SafeStr(array_name);
-#if RUBY_VERSION_CODE >= 180
         array_name_ptr = StringValuePtr(array_name);
-#else
-        array_name_ptr = STR2CSTR(array_name);
-#endif  
         searcher = sary_searcher_new2(file_name_ptr, array_name_ptr);
     }
     if (searcher == NULL)
@@ -133,12 +131,8 @@
     GET_Searcher(klass, searcher);
 
     Check_SafeStr(pattern);
-#if RUBY_VERSION_CODE >= 180
     pat = StringValuePtr(pattern);
-    len = RSTRING(pattern)->len;
-#else
-    pat = str2cstr(pattern, &len);
-#endif
+    len = RSTRING_LEN(pattern);
 
     if (sary_searcher_search2(searcher, pat, len))
 	return Qtrue;
@@ -157,7 +151,7 @@
 
     GET_Searcher(klass, searcher);
 
-    len = RARRAY(pattern_array)->len;
+    len = RARRAY_LEN(pattern_array);
     if (len == 0) {
       return Qfalse;
     }
@@ -166,11 +160,7 @@
     for (i = 0; i < len; i++) {
 	pattern = rb_ary_entry(pattern_array, (long)i);
 	Check_SafeStr(pattern);
-#if RUBY_VERSION_CODE >= 180
         pat[i] = StringValuePtr(pattern);
-#else
-	pat[i] = STR2CSTR(pattern);
-#endif  
     }
 
     if (sary_searcher_multi_search(searcher, pat, len))
@@ -189,11 +179,7 @@
     GET_Searcher(klass, searcher);
 
     Check_SafeStr(pattern);
-#if RUBY_VERSION_CODE >= 180
     pat = StringValuePtr(pattern);
-#else
-    pat = STR2CSTR(pattern);
-#endif  
 
     if (sary_searcher_isearch(searcher, pat, NUM2INT(len)))
 	return Qtrue;
@@ -224,12 +210,8 @@
     GET_Searcher(klass, searcher);
 
     Check_SafeStr(pattern);
-#if RUBY_VERSION_CODE >= 180
     pat = StringValuePtr(pattern);
-    len = RSTRING(pattern)->len;
-#else
-    pat = str2cstr(pattern, &len);
-#endif
+    len = RSTRING_LEN(pattern);
 
     if (sary_searcher_icase_search2(searcher, pat, len))
 	return Qtrue;
@@ -275,15 +257,10 @@
 
     Check_SafeStr(start_tag);
     Check_SafeStr(end_tag);
-#if RUBY_VERSION_CODE >= 180
     stag = StringValuePtr(start_tag);
     etag = StringValuePtr(end_tag);
-    slen = RSTRING(stag)->len;
-    elen = RSTRING(etag)->len;
-#else
-    stag = rb_str2cstr(start_tag, &slen);
-    etag = rb_str2cstr(end_tag, &elen);
-#endif
+    slen = RSTRING_LEN(stag);
+    elen = RSTRING_LEN(etag);
 
     region = sary_searcher_get_next_tagged_region2(searcher, stag, slen,
 					    etag, elen, &rlen);