Move the logic for testing if system curses supports the needed functions

from devel/ncurses to the mk infrastructure.

FAKE_NCURSES=yes
Provides the system curses as ncurses.h and libncurses.

USE_CURSES=wide
Links to system curses if they provide wide support, otherwise ncursesw.
wide-curses in the package options also triggers this.

1 files changed, 93 insertions, 1 deletions

diff --git a/mk/curses.builtin.mk b/mk/curses.builtin.mk
index b2bc27c09bc..8cb637af1b7 100644
--- a/mk/curses.builtin.mk
+++ b/mk/curses.builtin.mk
@@ -1,4 +1,4 @@
-# $NetBSD: curses.builtin.mk,v 1.7 2013/11/23 09:10:14 obache Exp $
+# $NetBSD: curses.builtin.mk,v 1.8 2014/03/09 10:15:32 roy Exp $
 
 BUILTIN_PKG:=	curses
 
@@ -6,6 +6,34 @@ BUILTIN_FIND_LIBS:=		curses
 BUILTIN_FIND_HEADERS_VAR:=	H_CURSES
 BUILTIN_FIND_HEADERS.H_CURSES=	curses.h
 
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_HALFDELAY
+BUILTIN_FIND_FILES.H_CURSES_HALFDELAY=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_HALFDELAY=	halfdelay
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_RESIZETERM
+BUILTIN_FIND_FILES.H_CURSES_RESIZETERM=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_RESIZETERM=	resizeterm
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_PUTWIN
+BUILTIN_FIND_FILES.H_CURSES_PUTWIN=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_PUTWIN=	putwin
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_WA_NORMAL
+BUILTIN_FIND_FILES.H_CURSES_WA_NORMAL=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_WA_NORMAL=	WA_NORMAL
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_WGETNSTR
+BUILTIN_FIND_FILES.H_CURSES_WGETNSTR=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_WGETNSTR=	wgetnstr
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_WSYNCUP
+BUILTIN_FIND_FILES.H_CURSES_WSYNCUP=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_WSYNCUP=	wsyncup
+
+BUILTIN_FIND_FILES_VAR+=	 H_CURSES_MVWCHGAT
+BUILTIN_FIND_FILES.H_CURSES_MVWCHGAT=	${BUILTIN_FIND_FILES.H_CURSES}
+BUILTIN_FIND_GREP.H_CURSES_MVWCHGAT=	mvwchgat
+
 .include "buildlink3/bsd.builtin.mk"
 
 ###
@@ -44,6 +72,68 @@ USE_BUILTIN.curses!=							\
 .    endif
 .  endif  # PREFER.curses
 .endif
+
+# If it is set to chgat, a curses implementation with chgat(3) support
+# is considered good enough.
+.if defined(USE_CURSES) && empty(USE_CURSES:M[yY][eE][sS])
+.  if !empty(USE_CURSES:Mchgat) && !empty(H_CURSES_MVWCHGAT:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.  endif
+# same for halfdelay(3)
+.  if !empty(USE_CURSES:Mhalfdelay)
+.    if !empty(H_CURSES_HALFDELAY:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.    endif
+.  endif
+## same for putwin(3)
+.  if !empty(USE_CURSES:Mputwin) && !empty(H_CURSES_PUTWIN:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.  endif
+# same for resizeterm(3)
+.  if !empty(USE_CURSES:Mresizeterm)
+.    if !empty(H_CURSES_RESIZETERM:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.    endif
+.  endif
+## same for WA_NORMAL
+.  if !empty(USE_CURSES:MWA_NORMAL)
+.    if !empty(H_CURSES_WA_NORMAL:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.    endif
+.  endif
+## same for wgetnstr(3)
+.  if !empty(USE_CURSES:Mwgetnstr) && !empty(H_CURSES_WGETNSTR:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.  endif
+# same for wsyncup(3)
+.  if !empty(USE_CURSES:Mwsyncup) && !empty(H_CURSES_WSYNCUP:M__nonexistent__)
+USE_BUILTIN.curses=	no
+.  endif
+# AFAIK there is no way of working out if a system curses library has wide
+# character support. So be safe and say no unless we know for sure.
+.  if !empty(USE_CURSES:Mwide)
+.    if ${OPSYS} == "NetBSD"
+.      if !empty(MACHINE_PLATFORM:MNetBSD-[0-4].*-*)
+USE_BUILTIN.curses=	no
+.      endif
+.    else
+USE_BUILTIN.curses=	no
+.    endif
+.  endif
+.endif
+
+# Even if the package requested tests above pass,
+# some system curses just are not good enough.
+# If your system is one, add it here so a suitable
+# curses from pkgsrc can be installed.
+_INCOMPAT_CURSES?=	NetBSD-0.*-* NetBSD-1.[0123]*-*			\
+			NetBSD-1.4.*-* NetBSD-1.4[A-X]-*
+.for _pattern_ in ${_INCOMPAT_CURSES} ${INCOMPAT_CURSES}
+.  if !empty(MACHINE_PLATFORM:M${_pattern_})
+USE_BUILTIN.curses=	no
+.  endif
+.endfor
+
 MAKEVARS+=	USE_BUILTIN.curses
 
 # Define BUILTIN_LIBNAME.curses to be the base name of the built-in
@@ -53,6 +143,8 @@ MAKEVARS+=	USE_BUILTIN.curses
 BUILTIN_LIBNAME.curses=		curses
 .endif
 
+BUILTIN_LIBNAME.curses=		curses
+
 ###
 ### The section below only applies if we are not including this file
 ### solely to determine whether a built-in implementation exists.