diff --git a/src/Makefile b/src/Makefile

index febbced..9737b55 100644

--- a/src/Makefile

+++ b/src/Makefile

@@ -20,7 +20,6 @@ SUBDIRS = \

 	backend/utils/mb/conversion_procs \

 	backend/snowball \

 	include \

-	interfaces \

 	backend/replication/libpqwalreceiver \

 	backend/replication/pgoutput \

 	fe_utils \

diff --git a/src/Makefile.global.in b/src/Makefile.global.in

index 4ed5174..d0e0dae 100644

--- a/src/Makefile.global.in

+++ b/src/Makefile.global.in

@@ -457,7 +457,7 @@ endif

 # This macro is for use by libraries linking to libpq.  (Because libpgport

 # isn't created with the same link flags as libpq, it can't be used.)

-libpq = -L$(libpq_builddir) -lpq

+libpq = -lpq

 # This macro is for use by client executables (not libraries) that use libpq.

 # We force clients to pull symbols from the non-shared libraries libpgport

@@ -483,7 +483,6 @@ endif

 # Commonly used submake targets

 submake-libpq:

-	$(MAKE) -C $(libpq_builddir) all

 submake-libpgport:

 	$(MAKE) -C $(top_builddir)/src/port all