libpq needs its own copy of src/port/getpeereid.

... on some platforms, anyway.  Per buildfarm.

src/interfaces/libpq/Makefile

@@ -37,7 +37,7 @@ OBJS=	fe-auth.o fe-connect.o fe-exec.o fe-misc.o fe-print.o fe-lobj.o \
 # libpgport C files we always use
 OBJS += chklocale.o inet_net_ntop.o noblock.o pgstrcasecmp.o thread.o
 # libpgport C files that are needed if identified by configure
-OBJS += $(filter crypt.o getaddrinfo.o inet_aton.o open.o snprintf.o strerror.o strlcpy.o win32error.o, $(LIBOBJS))
+OBJS += $(filter crypt.o getaddrinfo.o getpeereid.o inet_aton.o open.o snprintf.o strerror.o strlcpy.o win32error.o, $(LIBOBJS))
 # backend/libpq
 OBJS += ip.o md5.o
 # utils/mb
@@ -88,7 +88,7 @@ backend_src = $(top_srcdir)/src/backend
 # For some libpgport modules, this only happens if configure decides 
 # the module is needed (see filter hack in OBJS, above).
 
-chklocale.c crypt.c getaddrinfo.c inet_aton.c inet_net_ntop.c noblock.c open.c pgsleep.c pgstrcasecmp.c snprintf.c strerror.c strlcpy.c thread.c win32error.c: % : $(top_srcdir)/src/port/%
+chklocale.c crypt.c getaddrinfo.c getpeereid.c inet_aton.c inet_net_ntop.c noblock.c open.c pgsleep.c pgstrcasecmp.c snprintf.c strerror.c strlcpy.c thread.c win32error.c: % : $(top_srcdir)/src/port/%
 	rm -f $@ && $(LN_S) $< .
 
 ip.c md5.c: % : $(backend_src)/libpq/%
@@ -135,7 +135,7 @@ clean distclean: clean-lib
 # Might be left over from a Win32 client-only build
 	rm -f pg_config_paths.h
 	rm -f inet_net_ntop.c noblock.c pgstrcasecmp.c thread.c
-	rm -f chklocale.c crypt.c getaddrinfo.c inet_aton.c open.c snprintf.c strerror.c strlcpy.c win32error.c
+	rm -f chklocale.c crypt.c getaddrinfo.c getpeereid.c inet_aton.c open.c snprintf.c strerror.c strlcpy.c win32error.c
 	rm -f pgsleep.c	
 	rm -f md5.c ip.c
 	rm -f encnames.c wchar.c