http://cvs.fedoraproject.org/viewvc/rpms/valgrind/devel/valgrind-3.5.0-glibc-2.12.patch?view=log

--- configure.in
+++ configure.in
@@ -666,6 +666,16 @@ AC_EGREP_CPP([GLIBC_211], [
 ],
 GLIBC_VERSION="2.11")
 
+AC_EGREP_CPP([GLIBC_212], [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 12)
+  GLIBC_212
+ #endif
+#endif
+],
+GLIBC_VERSION="2.12")
+
 AC_EGREP_CPP([AIX5_LIBC], [
 #include <standards.h>
 #if defined(_AIXVERSION_510) || defined(_AIXVERSION_520) || defined(_AIXVERSION_530)
@@ -759,6 +769,13 @@ case "${GLIBC_VERSION}" in
 	DEFAULT_SUPP="glibc-2.34567-NPTL-helgrind.supp ${DEFAULT_SUPP}"
 	DEFAULT_SUPP="glibc-2.X-drd.supp ${DEFAULT_SUPP}"
 	;;
+     2.12)
+	AC_MSG_RESULT(2.12 family)
+	AC_DEFINE([GLIBC_2_12], 1, [Define to 1 if you're using glibc 2.12.x])
+	DEFAULT_SUPP="glibc-2.X.supp ${DEFAULT_SUPP}"
+	DEFAULT_SUPP="glibc-2.34567-NPTL-helgrind.supp ${DEFAULT_SUPP}"
+	DEFAULT_SUPP="glibc-2.X-drd.supp ${DEFAULT_SUPP}"
+	;;
      aix5)
 	AC_MSG_RESULT(AIX 5.1 or 5.2 or 5.3)
 	AC_DEFINE([AIX5_LIBC], 1, [Define to 1 if you're using AIX 5.1 or 5.2 or 5.3])
@@ -772,7 +789,7 @@ case "${GLIBC_VERSION}" in
 
      *)
 	AC_MSG_RESULT(unsupported version)
-	AC_MSG_ERROR([Valgrind requires glibc version 2.2 - 2.11])
+	AC_MSG_ERROR([Valgrind requires glibc version 2.2 - 2.12])
 	AC_MSG_ERROR([or AIX 5.1 or 5.2 or 5.3 GLIBC_VERSION])
 	AC_MSG_ERROR([or Darwin libc])
 	;;
--- config.h.in
+++ config.h.in
@@ -18,6 +18,9 @@
 /* Define to 1 if you're using glibc 2.11.x */
 #undef GLIBC_2_11
 
+/* Define to 1 if you're using glibc 2.12.x */
+#undef GLIBC_2_12
+
 /* Define to 1 if you're using glibc 2.2.x */
 #undef GLIBC_2_2