--- Libc/Libc-763.13/pthreads/Makefile.inc
+++ Libc/Libc-498.1.7/pthreads/Makefile.inc
@@ -7,19 +7,17 @@
 MISRCS += pthread_cancelable.c pthread_cond.c pthread_tsd.c pthread.c \
         pthread_mutex.c    thread_setup.c   stack.s pthread_rwlock.c
 
-DYLDSRCS += pthread.c pthread_mutex.c pthread_tsd.c
-
 .ifdef FEATURE_PLOCKSTAT
 ${SYMROOTINC}/plockstat.h: ${.CURDIR}/pthreads/plockstat.d
-	${MKDIR} ${SYMROOTINC}
-	${DTRACE} -o ${.TARGET} -C -h -s ${.ALLSRC}
+	mkdir -p ${SYMROOTINC}
+	dtrace -o ${.TARGET} -C -h -s ${.ALLSRC}
 
 .for _src in pthread_cond.c pthread_mutex.c pthread_rwlock.c
 ${_src:R}.${OBJSUFFIX}: ${SYMROOTINC}/plockstat.h
 .endfor
 .endif # FEATURE_PLOCKSTAT
 
-PTHREADS_INSTHDRS += pthread.h pthread_spis.h pthread_impl.h sched.h
+PTHREADS_INSTHDRS += pthread.h pthread_impl.h sched.h
 PTHREADS_INSTHDRS := ${PTHREADS_INSTHDRS:S/^/${.CURDIR}\/pthreads\//}
 INSTHDRS += ${PTHREADS_INSTHDRS}
 
@@ -42,15 +40,6 @@
 CFLAGS-pthread_cond.c += -DLIBC_ALIAS_PTHREAD_COND_INIT
 CFLAGS-pthread_mutex.c += -DLIBC_ALIAS_PTHREAD_MUTEXATTR_DESTROY
 CFLAGS-pthread_rwlock.c += -DLIBC_ALIAS_PTHREAD_RWLOCK_DESTROY -DLIBC_ALIAS_PTHREAD_RWLOCK_INIT -DLIBC_ALIAS_PTHREAD_RWLOCK_RDLOCK -DLIBC_ALIAS_PTHREAD_RWLOCK_TRYRDLOCK -DLIBC_ALIAS_PTHREAD_RWLOCK_TRYWRLOCK -DLIBC_ALIAS_PTHREAD_RWLOCK_UNLOCK -DLIBC_ALIAS_PTHREAD_RWLOCK_WRLOCK
-
-.if defined(CCARCH) && ${CCARCH} == armv6
-CFLAGS-pthread.c += -mno-thumb
-CFLAGS-pthread_cancelable.c += -mno-thumb
-CFLAGS-pthread_cond.c += -mno-thumb
-CFLAGS-pthread_mutex.c += -mno-thumb
-CFLAGS-pthread_rwlock.c += -mno-thumb
-CFLAGS-pthread_tsd.c += -mno-thumb
-.endif
 
 STRIP_HDRS += pthread.h