Detect builtin "libXt" e.g. under Mac OS X Leopard.

x11/libXt/buildlink3.mk

@@ -1,8 +1,8 @@
-# $NetBSD: buildlink3.mk,v 1.3 2007/02/28 03:19:09 reed Exp $
+# $NetBSD: buildlink3.mk,v 1.4 2007/12/17 15:02:26 tron Exp $
 
 .include "../../mk/bsd.fast.prefs.mk"
 
-.if ${X11_TYPE} != "modular"
+.if ${X11_TYPE} != "modular" && !exists(${X11BASE}/lib/pkgconfig/xt.pc)
 .include "../../mk/x11.buildlink3.mk"
 .else
 

x11/libXt/builtin.mk

@@ -0,0 +1,49 @@
+# $NetBSD: builtin.mk,v 1.1 2007/12/17 15:02:26 tron Exp $
+
+BUILTIN_PKG:=	libXt
+
+BUILTIN_FIND_FILES_VAR:=	H_XTOS
+BUILTIN_FIND_FILES.H_XTOS=	${X11BASE}/include/X11/Xtos.h
+
+.include "../../mk/buildlink3/bsd.builtin.mk"
+
+###
+### Determine if there is a built-in implementation of the package and
+### set IS_BUILTIN.<pkg> appropriately ("yes" or "no").
+###
+.if ${X11BASE} == ${LOCALBASE}
+IS_BUILTIN.libXt=	no
+.elif !defined(IS_BUILTIN.libXt)
+IS_BUILTIN.libXt=	no
+.  if empty(H_XTOS:M__nonexistent__)
+IS_BUILTIN.libXt=	yes
+.  endif
+.endif
+MAKEVARS+=	IS_BUILTIN.libXt
+
+###
+### Determine whether we should use the built-in implementation if it
+### exists, and set USE_BUILTIN.<pkg> appropriate ("yes" or "no").
+###
+.if !defined(USE_BUILTIN.libXt)
+.  if ${PREFER.libXt} == "pkgsrc"
+USE_BUILTIN.libXt=	no
+.  else
+USE_BUILTIN.libXt=	${IS_BUILTIN.libXt}
+.    if defined(BUILTIN_PKG.libXt) && \
+        !empty(IS_BUILTIN.libXt:M[yY][eE][sS])
+USE_BUILTIN.libXt=	yes
+.      for _dep_ in ${BUILDLINK_API_DEPENDS.libXt}
+.        if !empty(USE_BUILTIN.libXt:M[yY][eE][sS])
+USE_BUILTIN.libXt!=							\
+	if ${PKG_ADMIN} pmatch ${_dep_:Q} ${BUILTIN_PKG.libXt:Q}; then \
+		${ECHO} yes;						\
+	else								\
+		${ECHO} no;						\
+	fi
+.        endif
+.      endfor
+.    endif
+.  endif  # PREFER.libXt
+.endif
+MAKEVARS+=	USE_BUILTIN.libXt