add -DNOT_IN_libc

libpthread/linuxthreads.old_db/Makefile.in

@@ -6,7 +6,7 @@
 #
 
 # Get the thread include dependencies and shared object name
-CFLAGS-linuxthreads.old_db := -DLIBPTHREAD_SO="\"libpthread.so.$(MAJOR_VERSION)\""
+CFLAGS-linuxthreads.old_db := -DNOT_IN_libc -DLIBPTHREAD_SO="\"libpthread.so.$(MAJOR_VERSION)\""
 
 LDFLAGS-libthread_db.so := $(LDFLAGS_NOSTRIP) -s --warn-unresolved-symbols
 

libpthread/linuxthreads_db/Makefile.in

@@ -6,7 +6,7 @@
 #
 
 # Get the thread include dependencies and shared object name
-CFLAGS-linuxthreads_db := -DLIBPTHREAD_SO="\"libpthread.so.$(MAJOR_VERSION)\""
+CFLAGS-linuxthreads_db := -DNOT_IN_libc -DLIBPTHREAD_SO="\"libpthread.so.$(MAJOR_VERSION)\""
 
 LDFLAGS-libthread_db.so := $(LDFLAGS_NOSTRIP) -s --warn-unresolved-symbols