Index: libcfa/src/concurrency/kernel/startup.cfa
===================================================================
--- libcfa/src/concurrency/kernel/startup.cfa	(revision 09ae8a65eaa83cc8c6f3e0773ff9480b3bd7bc03)
+++ libcfa/src/concurrency/kernel/startup.cfa	(revision f69fac7faef547c274fcfbc767d8c423a7f3a207)
@@ -122,8 +122,7 @@
 extern "C" {
 	struct { __dllist_t(cluster) list; __spinlock_t lock; } __cfa_dbg_global_clusters;
-}
-
-extern size_t __page_size;
-extern int __map_prot;
+	extern size_t __cfa_page_size;
+	extern int __map_prot;
+}
 
 //-----------------------------------------------------------------------------
@@ -574,5 +573,4 @@
 }
 
-extern size_t __page_size;
 void ^?{}(processor & this) with( this ){
 	/* paranoid */ verify( !__atomic_load_n(&do_terminate, __ATOMIC_ACQUIRE) );
@@ -740,17 +738,17 @@
 	void * stack;
 	#if CFA_PROCESSOR_USE_MMAP
-		stacksize = ceiling( stacksize, __page_size ) + __page_size;
+		stacksize = ceiling( stacksize, __cfa_page_size ) + __cfa_page_size;
 		stack = mmap(0p, stacksize, __map_prot, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
 		if(stack == ((void*)-1)) {
 			abort( "pthread stack creation : internal error, mmap failure, error(%d) %s.", errno, strerror( errno ) );
 		}
-		if ( mprotect( stack, __page_size, PROT_NONE ) == -1 ) {
+		if ( mprotect( stack, __cfa_page_size, PROT_NONE ) == -1 ) {
 			abort( "pthread stack creation : internal error, mprotect failure, error(%d) %s.", errno, strerror( errno ) );
 		} // if
 	#else
 		__cfaabi_dbg_debug_do(
-			stack = memalign( __page_size, stacksize + __page_size );
+			stack = memalign( __cfa_page_size, stacksize + __cfa_page_size );
 			// pthread has no mechanism to create the guard page in user supplied stack.
-			if ( mprotect( stack, __page_size, PROT_NONE ) == -1 ) {
+			if ( mprotect( stack, __cfa_page_size, PROT_NONE ) == -1 ) {
 				abort( "mprotect : internal error, mprotect failure, error(%d) %s.", errno, strerror( errno ) );
 			} // if
@@ -779,5 +777,5 @@
 		check( pthread_attr_getstacksize( &attr, &stacksize ), "pthread_attr_getstacksize" );
 		assert( stacksize >= PTHREAD_STACK_MIN );
-		stacksize += __page_size;
+		stacksize += __cfa_page_size;
 
 		if(munmap(stack, stacksize) == -1) {
@@ -787,5 +785,5 @@
 		__cfaabi_dbg_debug_do(
 			// pthread has no mechanism to create the guard page in user supplied stack.
-			if ( mprotect( stack, __page_size, __map_prot ) == -1 ) {
+			if ( mprotect( stack, __cfa_page_size, __map_prot ) == -1 ) {
 				abort( "mprotect : internal error, mprotect failure, error(%d) %s.", errno, strerror( errno ) );
 			} // if