libpq: Add missing directory to installdirs target

It prevented the libpq directory from being installable by itself.

diff --git a/src/interfaces/libpq/Makefile b/src/interfaces/libpq/Makefile
index b4be502495cca7979a965008bc87c6be1125e736..629b85315c983adce8a76978ba3073c98831043a 100644 (file)
--- a/src/interfaces/libpq/Makefile
+++ b/src/interfaces/libpq/Makefile
@@ -125,7 +125,7 @@ installcheck:
        $(MAKE) -C test $@
 
 installdirs: installdirs-lib
-       $(MKDIR_P) '$(DESTDIR)$(includedir)' '$(DESTDIR)$(includedir_internal)'
+       $(MKDIR_P) '$(DESTDIR)$(includedir)' '$(DESTDIR)$(includedir_internal)' '$(DESTDIR)$(datadir)'
 
 uninstall: uninstall-lib
        rm -f '$(DESTDIR)$(includedir)/libpq-fe.h'