--- include/gc.h	2006-02-25 15:49:52 +0000
+++ include/gc.h	2006-02-25 15:50:00 +0000
@@ -473,7 +473,9 @@
 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2) \
      && !defined(__ia64__)
 #   ifndef GC_HAVE_BUILTIN_BACKTRACE
-#     define GC_HAVE_BUILTIN_BACKTRACE
+#     ifndef __UCLIBC__
+#       define GC_HAVE_BUILTIN_BACKTRACE
+#     endif
 #   endif
 # endif
 # if defined(__i386__) || defined(__x86_64__)