$ mips-linux-g++ -dumpversion
4.1.2
$ ./configure -no-webkit -no-svg -nomake tests -nomake demos -nomake examples -nomake tools -opensource -confirm-license -embedded mips

When linking QtCore:

.obj/release-shared-emb-mips/qthread_unix.o: In function `set_thread_data(QThreadData*)':
qthread_unix.cpp.text+0xec): undefined reference to `__tls_get_addr'
.obj/release-shared-emb-mips/qthread_unix.o: In function `QThreadData::current()':
qthread_unix.cpp.text+0x708): undefined reference to `__tls_get_addr'
collect2: ld returned 1 exit status

The problem is 'fixed' by a patch like:

diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index 765969e..ae75700 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -107,7 +107,7 @@ QT_BEGIN_NAMESPACE
 enum { ThreadPriorityResetFlag = 0x80000000 };
 
 #if defined(Q_OS_LINUX) && defined(__GLIBC__) && (defined(Q_CC_GNU) || defined(Q_CC_INTEL))
-#define HAVE_TLS
+// #define HAVE_TLS
 #endif
 #if defined(Q_CC_XLC) || defined (Q_CC_SUN)
 #define HAVE_TLS