$NetBSD: patch-GNUmakefile,v 1.4 2025/05/23 09:28:50 jperkin Exp $

Support PKGMANDIR.
Support more operating systems.

--- GNUmakefile.orig	2024-07-09 15:39:50.000000000 +0000
+++ GNUmakefile
@@ -11,16 +11,26 @@ prefix=		/usr/local
 bindir=		$(prefix)/bin
 libdir=		$(prefix)/lib
 includedir=	$(prefix)/include
-mandir=		$(prefix)/man
+mandir=		$(prefix)/$(PKGMANDIR)
 
-PKG_CONFIG=	/usr/bin/pkg-config --silence-errors
-INSTALL=	/usr/bin/install
-STRIP=		/usr/bin/strip
+PKG_CONFIG?=	/usr/bin/pkg-config --silence-errors
+INSTALL?=	/usr/bin/install
+STRIP?=		/usr/bin/strip
 
 UNAME:=		$(shell uname)
 ifeq ($(UNAME),FreeBSD)
   BSD_CPPFLAGS:= -DHAVE_UTIL_H
   BSD_LIBS:=	 -lutil
+else ifeq ($(UNAME),NetBSD)
+  BSD_CPPFLAGS:= -DHAVE_UTIL_H
+  BSD_LIBS:=	 -lutil
+else ifeq ($(UNAME),Darwin)
+  BSD_CPPFLAGS:= -DHAVE_UTIL_H
+  BSD_LIBS:=	 -lutil
+else ifeq ($(UNAME),SunOS)
+  BSD_CPPFLAGS:= $(shell $(PKG_CONFIG) --cflags libbsd-overlay)
+  BSD_LIBS:=	 $(shell $(PKG_CONFIG) --libs libbsd-overlay) -lsocket
+  OBJS:=         openpty.o
 else
   BSD_CPPFLAGS:= $(shell $(PKG_CONFIG) --cflags libbsd-overlay) -DHAVE_PTY_H
   BSD_LIBS:=	 $(shell $(PKG_CONFIG) --libs libbsd-overlay) -lutil
@@ -51,7 +61,7 @@ CPPFLAGS+=	$(BSD_CPPFLAGS)
 LIBS=		$(CURSES_LIBS) $(BSD_LIBS)
 
 
-OBJS=	autoexec.o basic.o bell.o buffer.o cinfo.o dir.o display.o \
+OBJS+=	autoexec.o basic.o bell.o buffer.o cinfo.o dir.o display.o \
 	echo.o extend.o file.o fileio.o funmap.o interpreter.o help.o \
 	kbd.o keymap.o line.o macro.o main.o match.o modes.o paragraph.o \
 	re_search.o region.o search.o spawn.o tty.o ttyio.o ttykbd.o \