diff --git a/configure b/configure
index f9bf3b233c..aad8e30742 100755
--- a/configure
+++ b/configure
@@ -41353,6 +41353,7 @@ _ACEOF
   done
 
 
+
   for wx_func in getpwuid_r
   do
     { echo "$as_me:$LINENO: checking for $wx_func" >&5
@@ -41369,8 +41370,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-                #define _REENTRANT
-                                        #include <pwd.h>
+
+                    #define _REENTRANT
+                    #include <pwd.h>
+
                 $ac_includes_default
 
 int
@@ -41381,6 +41384,10 @@ main ()
                   &$wx_func;
                 #endif
 
+                    struct passwd pw, *ppw;
+                    char buf[1024];
+                    getpwuid_r(0, &pw, buf, sizeof(buf), &ppw)
+
 
   ;
   return 0;
@@ -41435,6 +41442,7 @@ _ACEOF
   done
 
 
+
   for wx_func in getgrgid_r
   do
     { echo "$as_me:$LINENO: checking for $wx_func" >&5
@@ -41451,8 +41459,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-                #define _REENTRANT
-                                        #include <grp.h>
+
+                    #define _REENTRANT
+                    #include <grp.h>
+
                 $ac_includes_default
 
 int
@@ -41463,6 +41473,10 @@ main ()
                   &$wx_func;
                 #endif
 
+                    struct group grp, *pgrp;
+                    char buf[1024];
+                    getgrgid_r(0, &grp, buf, sizeof(buf), &pgrp)
+
 
   ;
   return 0;
diff --git a/configure.in b/configure.in
index e274a5edd2..21e6991a78 100644
--- a/configure.in
+++ b/configure.in
@@ -4640,10 +4640,28 @@ WX_CHECK_FUNCS(fdopen)
 
 if test "$wxUSE_TARSTREAM" = "yes"; then
     WX_CHECK_FUNCS(sysconf)
-    WX_CHECK_FUNCS(getpwuid_r, [], [], [#define _REENTRANT
-                                        #include <pwd.h>])
-    WX_CHECK_FUNCS(getgrgid_r, [], [], [#define _REENTRANT
-                                        #include <grp.h>])
+
+    WX_CHECK_FUNCS(getpwuid_r, [], [],
+                   [
+                    #define _REENTRANT
+                    #include <pwd.h>
+                   ],
+                   [[
+                    struct passwd pw, *ppw;
+                    char buf[1024];
+                    getpwuid_r(0, &pw, buf, sizeof(buf), &ppw)
+                   ]])
+
+    WX_CHECK_FUNCS(getgrgid_r, [], [],
+                   [
+                    #define _REENTRANT
+                    #include <grp.h>
+                   ],
+                   [[
+                    struct group grp, *pgrp;
+                    char buf[1024];
+                    getgrgid_r(0, &grp, buf, sizeof(buf), &pgrp)
+                   ]])
 fi
  
 fi