https://github.com/ivmai/bdwgc/commit/76b3d3a57583fdb19152f4d911b11725e31b4a06

2007-12-18  Hans Boehm <Hans.Boehm@hp.com> (really Radek Polak)

	* include/gc.h: Don't define GC_HAVE_BUILTIN_BACKTRACE for uclibc.

--- a/boehm-gc/include/gc.h
+++ b/boehm-gc/include/gc.h
@@ -500,7 +500,7 @@
 #ifdef __linux__
 # include <features.h>
 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2) \
-     && !defined(__ia64__)
+     && !defined(__ia64__) && !defined(__UCLIBC__)
 #   ifndef GC_HAVE_BUILTIN_BACKTRACE
 #     define GC_HAVE_BUILTIN_BACKTRACE
 #   endif