diff --git a/CMakeLists.txt b/CMakeLists.txt
index 07457bd3..cac51e37 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -143,15 +143,6 @@ if (NOT MSVC)
 	if(HAVE_ATTRIBUTE_DESTRUCTOR)
 		set(ATTRIBUTE_DESTRUCTOR "__attribute__((destructor))")
 	endif()
-	check_c_source_compiles("
-		#include <netdb.h>
-		int main() { (void) gethostbyname((const char*) \"\"); return 0; }
-	" GETHOSTBYNAME_ARG_CAST_CONST)
-	if(NOT GETHOSTBYNAME_ARG_CAST_CONST)
-		set(GETHOSTBYNAME_ARG_CAST "(char *)")
-	else()
-		set(GETHOSTBYNAME_ARG_CAST "/**/")
-	endif()
 	check_include_files(arpa/inet.h HAVE_ARPA_INET_H)
 	check_struct_has_member("struct sockaddr_storage" ss_family "sys/socket.h" HAVE_SS_FAMILY)
 	check_struct_has_member("struct sockaddr_storage" __ss_family "sys/socket.h" HAVE_BROKEN_SS_FAMILY)
@@ -191,15 +182,6 @@ if (NOT MSVC)
 	check_function_exists(va_copy HAVE_VA_COPY)
 	check_function_exists(__va_copy HAVE___VA_COPY)
 	set(LT_OBJDIR ".libs/")
-	check_c_source_compiles("
-		#include <sys/socket.h>
-		int main() { (void) send(1, (const char*) \"\", 1, 1); return 0; }
-	" SEND_ARG2_CAST_CONST)
-	if(NOT SEND_ARG2_CAST_CONST)
-		set(SEND_ARG2_CAST "(char *)")
-	else()
-		set(SEND_ARG2_CAST "/**/")
-	endif()
 	check_c_source_compiles("
 		#include <stdarg.h>
 		void a(va_list* ap) {};
diff --git a/config.h.cmake.in b/config.h.cmake.in
index b631f213..3ff1f42a 100644
--- a/config.h.cmake.in
+++ b/config.h.cmake.in
@@ -4,9 +4,6 @@
 /* Define if __attribute__((destructor)) is accepted */
 #cmakedefine ATTRIBUTE_DESTRUCTOR @ATTRIBUTE_DESTRUCTOR@
 
-/* Type cast for the gethostbyname() argument */
-#cmakedefine GETHOSTBYNAME_ARG_CAST @GETHOSTBYNAME_ARG_CAST@
-
 /* Define to 1 if you have the <arpa/inet.h> header file. */
 #cmakedefine HAVE_ARPA_INET_H 1
 
@@ -138,9 +135,6 @@
 /* Define to the version of this package. */
 #define PACKAGE_VERSION "@PACKAGE_VERSION@"
 
-/* Type cast for the send() function 2nd arg */
-#cmakedefine SEND_ARG2_CAST @SEND_ARG2_CAST@
-
 /* Support for IPv6 */
 #cmakedefine SUPPORT_IP6 1
 
diff --git a/configure.ac b/configure.ac
index 84897839..80cee5ea 100644
--- a/configure.ac
+++ b/configure.ac
@@ -381,36 +381,6 @@ AC_TRY_COMPILE2([
       XML_SOCKLEN_T="int"])])])
 AC_DEFINE_UNQUOTED(XML_SOCKLEN_T, $XML_SOCKLEN_T, [Determine what socket length (socklen_t) data type is])
 
-dnl Checking if gethostbyname() argument is const.
-AC_MSG_CHECKING([for const gethostbyname() argument])
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
-    [[(void)gethostbyname((const char *)"");]])],
-have_gethostbyname_const_arg=yes,
-have_gethostbyname_const_arg=no)
-AC_MSG_RESULT($have_gethostbyname_const_arg)
-if test x"$have_gethostbyname_const_arg" = x"yes"; then
-    AC_DEFINE([GETHOSTBYNAME_ARG_CAST], [],
-      [Type cast for the gethostbyname() argument])
-else
-    AC_DEFINE([GETHOSTBYNAME_ARG_CAST], [(char *)],
-      [Type cast for the gethostbyname() argument])
-fi
-
-dnl Checking if send() second argument is const.
-AC_MSG_CHECKING([for const send() second argument])
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
-    [[(void)send(1,(const char *)"",1,1);]])],
-have_send_const_arg2=yes,
-have_send_const_arg2=no)
-AC_MSG_RESULT($have_send_const_arg2)
-if test x"$have_send_const_arg2" = x"yes"; then
-    AC_DEFINE([SEND_ARG2_CAST], [],
-      [Type cast for the send() function 2nd arg])
-else
-    AC_DEFINE([SEND_ARG2_CAST], [(char *)],
-      [Type cast for the send() function 2nd arg])
-fi
-
 dnl
 dnl Checking for availability of IPv6
 dnl
diff --git a/include/win32config.h b/include/win32config.h
index 4f99ae0b..bbf3fee8 100644
--- a/include/win32config.h
+++ b/include/win32config.h
@@ -1,9 +1,6 @@
 #ifndef __LIBXML_WIN32_CONFIG__
 #define __LIBXML_WIN32_CONFIG__
 
-#define SEND_ARG2_CAST
-#define GETHOSTBYNAME_ARG_CAST
-
 #define HAVE_SYS_STAT_H
 #define HAVE_STAT
 #define HAVE_FCNTL_H
diff --git a/nanoftp.c b/nanoftp.c
index 44bc2a0c..6e6e72dd 100644
--- a/nanoftp.c
+++ b/nanoftp.c
@@ -88,6 +88,9 @@
 #define XML_SOCKLEN_T unsigned int
 #endif
 
+#define GETHOSTBYNAME_ARG_CAST (char *)
+#define SEND_ARG2_CAST (char *)
+
 #define FTP_COMMAND_OK		200
 #define FTP_SYNTAX_ERROR	500
 #define FTP_GET_PASSWD		331
diff --git a/nanohttp.c b/nanohttp.c
index 45d15eeb..379f6b40 100644
--- a/nanohttp.c
+++ b/nanohttp.c
@@ -85,6 +85,9 @@
 #define XML_SOCKLEN_T unsigned int
 #endif
 
+#define GETHOSTBYNAME_ARG_CAST (char *)
+#define SEND_ARG2_CAST (char *)
+
 #ifdef STANDALONE
 #define DEBUG_HTTP
 #define xmlStrncasecmp(a, b, n) strncasecmp((char *)a, (char *)b, n)