https://bugs.gentoo.org/690078

--- Natch-2.4/configure.in
+++ Natch-2.4/configure.in
@@ -25,17 +25,19 @@
 dnl Checks for programs.
 AC_PROG_CC
 AC_PATH_PROGS(GENGETOPT, gengetopt)
+PKG_PROG_PKG_CONFIG
 
 dnl for txtc (Text-to-C compiler)
 AC_PROG_AWK
 LF_PROG_TXTC
 
 dnl Checks for libraries.
-AC_SEARCH_LIBS(
-	initscr,
-	ncurses curses,
+PKG_CHECK_MODULES(NCURSES, ncurses,[
 	AC_DEFINE(HAVE_LIBNCURSES,,
-		  Define if you have curses library for visual mode. ), )
+		  Define if you have curses library for visual mode. )
+	],[
+	AC_MSG_ERROR([Cannot find ncurses lib])
+])
 
 dnl Replace `main' with a function in -lpc:
 dnl AC_CHECK_LIB(pc, main)
--- Natch-2.4/src/Makefile.am
+++ Natch-2.4/src/Makefile.am
@@ -29,7 +29,7 @@
 
 Natch_SOURCES = main.c main.h types.h cmdline.c cmdline.h distance.c distance.h dis_type.h pcpj.c pcpj.h distimmo.c distimmo.h pcpj_deb.c pcpj_deb.h pcpjcapt.c pcpjcapt.h trajet.c trajet.h explorat.c explorat.h expltype.h pcpjcoup.c pcpjcoup.h hash.c hash.h pcpjtool.c pcpjtool.h myHashTable.c myHashTable.h langues.c langues.h screen.c screen.h common.h moves_order.c moves_order.h test_moves_order.c test_moves_order.h twin_squares.c twin_squares.h precise_trajectories.c precise_trajectories.h captInitSquare.c captInitSquare.h piece.c piece.h reportbugs.text copyright.text
 
-Natch_LDADD = @LIBOBJS@
+Natch_LDADD = @LIBOBJS@ $(NCURSES_LIBS)
 
 AM_CFLAGS = -Wall -fshort-enums -DNDEBUG -O3
 #AM_CFLAGS = -Wall -fshort-enums