--- bigloo3.2b.orig/api/fthread/src/Posix/bglsetup.c	2009-06-02 09:40:22.000000000 +0000
+++ bigloo3.2b/api/fthread/src/Posix/bglsetup.c	2010-02-23 08:41:58.567380439 +0000
@@ -38,8 +38,10 @@
 #endif
 
 #if( BGL_GC == BGL_BOEHM_GC && BGL_GC_HAVE_DO_BLOCKING )
+#if( BGL_GC_VERSION == 710 ) 
    extern void GC_do_blocking();
-   
+#endif
+
    bgl_gc_do_blocking = &GC_do_blocking;
 #endif
 
--- bigloo3.2b.orig/api/pthread/src/Posix/bglsetup.c	2009-06-02 09:40:22.000000000 +0000
+++ bigloo3.2b/api/pthread/src/Posix/bglsetup.c	2010-02-23 08:41:44.631378025 +0000
@@ -38,8 +38,10 @@
 #endif
 
 #if( BGL_GC == BGL_BOEHM_GC && BGL_GC_HAVE_DO_BLOCKING )
+#if( BGL_GC_VERSION == 710 )    
    extern void GC_do_blocking();
-   
+#endif
+
    bgl_gc_do_blocking = &GC_do_blocking;
 #endif