only define _REENTRANT if not already defined, and only in setup.h

lib/hostares.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostasyn.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostip.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostip4.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostip6.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostsyn.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/hostthre.c

@@ -26,8 +26,6 @@
 #include <string.h>
 #include <errno.h>
 
-#define _REENTRANT
-
 #if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
 #include <malloc.h>
 #else

lib/setup.h

@@ -95,13 +95,13 @@ typedef unsigned char bool;
 #define FORMAT_OFF_T "ld"
 #endif
 
-/*#ifdef NEED_REENTRANT*/
+#ifndef _REENTRANT
 /* Solaris needs _REENTRANT set for a few function prototypes and things to
    appear in the #include files. We need to #define it before all #include
    files. Unixware needs it to build proper reentrant code. Others may also
    need it. */
 #define _REENTRANT
-/*#endif */
+#endif
 
 #include <stdio.h>
 #ifdef HAVE_ASSERT_H