--- configure.ac.pthread	2016-02-18 11:40:40.177797402 +0100

+++ configure.ac	2016-02-18 11:41:34.232609836 +0100

@@ -193,7 +193,7 @@

 fi

 AC_SUBST(SQLITE_THREADSAFE)

-if test "$SQLITE_THREADSAFE" = "1"; then

+if test "$SQLITE_THREADSAFE" = "1" -a "$SQLITE_OS_UNIX" = "1" ; then

   AC_SEARCH_LIBS(pthread_create, pthread)

   AC_SEARCH_LIBS(pthread_mutexattr_init, pthread)

 fi