Use ncurses.pc to get Libs: instead of using AC_CHECK_LIB because ncurses can be configured
to have separate termcap library called libtinfo; and we need both -ltinfo and -lncurses for
linking since symbols are used from both

http://bugs.gentoo.org/459650

--- configure.in
+++ configure.in
@@ -125,12 +125,7 @@
 # End compile emacs stuff
 
 # Check for ncurses
-	HEADERS="curses.h term.h"
-	NCURSESLIB=""
-	AC_CHECK_HEADERS([$HEADERS],,[AC_MSG_ERROR([$HEADERS_ERROR_MESSAGE])],)
-	AC_CHECK_LIB(ncurses, setupterm, [NCURSESLIB="-lncurses"],[AC_MSG_ERROR([$LIBRARIES_ERROR_MESSAGE])] , )
-	AC_CHECK_LIB(ncurses, tputs,     [NCURSESLIB="-lncurses"],[AC_MSG_ERROR([$LIBRARIES_ERROR_MESSAGE])] , )
-	AC_SUBST(NCURSESLIB)
+	PKG_CHECK_MODULES(NCURSES, ncurses, [], [AC_MSG_ERROR([$LIBRARIES_ERROR_MESSAGE])])
 # End check for ncurses
 
 # Check for PAM support
--- src/libraries/Makefile.am
+++ src/libraries/Makefile.am
@@ -4,7 +4,7 @@
 INCLUDES      = -I../.. -I../
 BUILT_SOURCES = parse_settings.h
 
-AM_CFLAGS = -DSETTINGS_DIR=\"$(sysconfdir)/qingy\" -DSBINDIR=\"$(sbindir)/\"
+AM_CFLAGS = -DSETTINGS_DIR=\"$(sysconfdir)/qingy\" -DSBINDIR=\"$(sbindir)/\" $(NCURSES_CFLAGS)
 
 if !WANT_STATIC
 pkglib_LTLIBRARIES = libqingy.la
@@ -35,7 +35,7 @@
 EXTRA_libqingy_la_SOURCES =           \
     crypto_openssl.c crypto_libgcrypt.c crypto.h
 
-libqingy_la_LIBADD  = @PASSWDLIB@ @CRYPTOLIB@ @NCURSESLIB@ @XLIBS@
+libqingy_la_LIBADD  = @PASSWDLIB@ @CRYPTOLIB@ @XLIBS@ $(NCURSES_LIBS)
 libqingy_la_LDFLAGS = -release @VERSION@
 
 libqingy_static_la_SOURCES = $(libqingy_la_SOURCES)