--- ivtools-1.2.3/src/IV-common/string.c	2004-03-30 06:30:53.000000000 +0900
+++ ivtools-1.2.5/src/IV-common/string.c	2007-10-30 03:20:59.000000000 +0900
@@ -41,6 +41,7 @@
     extern wchar_t toupper(wchar_t);
 #endif
 #else
+#if !defined(__APPLE__)
 #ifndef tolower
     extern int tolower(int);
 #endif
@@ -48,6 +49,7 @@
     extern int toupper(int);
 #endif
 #endif
+#endif
     extern long int strtol(const char*, char**, int);
     extern double strtod(const char*, char**);
 }
--- ivtools-1.2.3/src/Dispatch/dispatcher.c	2005-01-27 03:39:22.000000000 +0900
+++ ivtools-1.2.5/src/Dispatch/dispatcher.c	2007-10-30 03:26:45.000000000 +0900
@@ -72,7 +72,7 @@
     void zero();
     void setBit(int);
     void clrBit(int);
-    boolean isSet(int) const;
+    boolean isSet(int);
     boolean anySet() const;
     int numSet() const;
 };
@@ -84,7 +84,7 @@
 void FdMask::zero() { Memory::zero(this, sizeof(FdMask)); }
 void FdMask::setBit(int fd) { FD_SET(fd,this); }
 void FdMask::clrBit(int fd) { FD_CLR(fd,this); }
-boolean FdMask::isSet(int fd) const { return FD_ISSET(fd,this); }
+boolean FdMask::isSet(int fd) { return FD_ISSET(fd,this); }
 
 boolean FdMask::anySet() const {
     const int mskcnt = howmany(FD_SETSIZE,NFDBITS);
--- ivtools-1.2.3/src/OS/string.c	2004-03-30 06:30:53.000000000 +0900
+++ ivtools-1.2.5/src/OS/string.c	2007-10-30 03:20:59.000000000 +0900
@@ -41,6 +41,7 @@
     extern wchar_t toupper(wchar_t);
 #endif
 #else
+#if !defined(__APPLE__)
 #ifndef tolower
     extern int tolower(int);
 #endif
@@ -48,6 +49,7 @@
     extern int toupper(int);
 #endif
 #endif
+#endif
     extern long int strtol(const char*, char**, int);
     extern double strtod(const char*, char**);
 }