--- a/configure.ac
+++ b/configure.ac
@@ -103,7 +103,7 @@
 AC_SEARCH_LIBS(elf32_getphdr, elf)
 # -lmld -lmach
 AC_SEARCH_LIBS(vm_statistics, mach)
-AC_SEARCH_LIBS(tgetent, termcap curses ncurses)
+AC_SEARCH_LIBS(tgetent, termcap tinfo curses ncurses)
 AC_SEARCH_LIBS(exp, m)
 
 AC_SEARCH_LIBS(dlerror, dl)
@@ -111,6 +111,8 @@
 AC_SEARCH_LIBS(inet_aton, resolv, AC_DEFINE(HAVE_INET_ATON, 1,
         [inet_aton is already defined]))
 
+AC_SEARCH_LIBS(PQexec, pq)
+
 # check for libraries required by extension
 extlibs=""
 if test -n "$with_ext" -a -f "${srcdir}/ext/$with_ext.libs"; then
@@ -217,8 +219,6 @@
 AC_SUBST(SRC)
 AC_SUBST(OBJ)
 
-CFLAGS="-Wall -g"
-
 AC_MSG_CHECKING(for installation settings)
 # calculate appropriate settings
 OWNER=""