From: http://buildroot.uclibc.org/cgi-bin/viewcvs.cgi/*checkout*/trunk/buildroot/toolchain/gcc/4.0.2/301-missing-execinfo_h.patch?rev=11715 --- gcc-4.0.0/boehm-gc/include/gc.h-orig 2005-04-28 22:28:57.000000000 -0500 +++ gcc-4.0.0/boehm-gc/include/gc.h 2005-04-28 22:30:38.000000000 -0500 @@ -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