diff --git a/runtest.c b/runtest.c
index dd74c88..071242b 100644
--- a/runtest.c
+++ b/runtest.c
@@ -3939,60 +3939,7 @@ thread_specific_data(void *private_data)
     return ((void *) Okay);
 }
 
-#if defined(linux) || defined(__sun) || defined(__APPLE_CC__)
-
-#include <pthread.h>
-
-static pthread_t tid[MAX_ARGC];
-
-static int
-testThread(void)
-{
-    unsigned int i, repeat;
-    unsigned int num_threads = sizeof(testfiles) / sizeof(testfiles[0]);
-    void *results[MAX_ARGC];
-    int ret;
-    int res = 0;
-
-    xmlInitParser();
-
-    for (repeat = 0; repeat < 500; repeat++) {
-        xmlLoadCatalog(catalog);
-        nb_tests++;
-
-        for (i = 0; i < num_threads; i++) {
-            results[i] = NULL;
-            tid[i] = (pthread_t) - 1;
-        }
-
-        for (i = 0; i < num_threads; i++) {
-            ret = pthread_create(&tid[i], 0, thread_specific_data,
-                                 (void *) testfiles[i]);
-            if (ret != 0) {
-                fprintf(stderr, "pthread_create failed\n");
-                return (1);
-            }
-        }
-        for (i = 0; i < num_threads; i++) {
-            ret = pthread_join(tid[i], &results[i]);
-            if (ret != 0) {
-                fprintf(stderr, "pthread_join failed\n");
-                return (1);
-            }
-        }
-
-        xmlCatalogCleanup();
-        for (i = 0; i < num_threads; i++)
-            if (results[i] != (void *) Okay) {
-                fprintf(stderr, "Thread %d handling %s failed\n",
-                        i, testfiles[i]);
-                res = 1;
-            }
-    }
-    return (res);
-}
-
-#elif defined WIN32
+#if defined WIN32
 #include <windows.h>
 #include <string.h>
 
@@ -4118,6 +4065,59 @@ testThread(void)
         return(1);
     return (0);
 }
+
+#elif defined HAVE_PTHREAD_H
+#include <pthread.h>
+
+static pthread_t tid[MAX_ARGC];
+
+static int
+testThread(void)
+{
+    unsigned int i, repeat;
+    unsigned int num_threads = sizeof(testfiles) / sizeof(testfiles[0]);
+    void *results[MAX_ARGC];
+    int ret;
+    int res = 0;
+
+    xmlInitParser();
+
+    for (repeat = 0; repeat < 500; repeat++) {
+        xmlLoadCatalog(catalog);
+        nb_tests++;
+
+        for (i = 0; i < num_threads; i++) {
+            results[i] = NULL;
+            tid[i] = (pthread_t) - 1;
+        }
+
+        for (i = 0; i < num_threads; i++) {
+            ret = pthread_create(&tid[i], 0, thread_specific_data,
+                                 (void *) testfiles[i]);
+            if (ret != 0) {
+                fprintf(stderr, "pthread_create failed\n");
+                return (1);
+            }
+        }
+        for (i = 0; i < num_threads; i++) {
+            ret = pthread_join(tid[i], &results[i]);
+            if (ret != 0) {
+                fprintf(stderr, "pthread_join failed\n");
+                return (1);
+            }
+        }
+
+        xmlCatalogCleanup();
+        for (i = 0; i < num_threads; i++)
+            if (results[i] != (void *) Okay) {
+                fprintf(stderr, "Thread %d handling %s failed\n",
+                        i, testfiles[i]);
+                res = 1;
+            }
+    }
+    return (res);
+}
+
 #else
 static int
 testThread(void)
