#!/bin/sh
# NetHack 5.0  mkmkfile.sh	$NHDT-Date: 1597332770 2020/08/13 15:32:50 $  $NHDT-Branch: NetHack-5.0 $:$NHDT-Revision: 1.15 $
# Copyright (c) Kenneth Lorber, Kensington, Maryland, 2007.
# NetHack may be freely redistributed.  See license for details.

# build one makefile
# args are:
#  $1 basefile
#  $2 basefile tag
#  $3 install path
#  $4 hints file (path)
#  $5 hints file (as given by user)
#  $6 gnu or bsd

echo "#" > $3
echo "# This file is generated automatically.  Do not edit." >> $3
echo "# Your changes will be lost.  See sys/unix/NewInstall.unx." >> $3
echo "# Identify this file:" >> $3
echo "MAKEFILE_$2=1" >> $3
echo "" >> $3
echo "HINTSFILE=$5" >> $3
echo "" >> $3

echo "###" >> $3
echo "### add check for builder include file $6-style" >> $3
echo "###" >> $3
echo "" >> $3
BUILDERINCL=make.prefs
echo "" >> $3
case "$6" in
	"gnu")
		echo "ifdef MAKEFILE_TOP" >> $3
		echo "NHSROOT=." >> $3
		echo "else" >> $3
		echo "NHSROOT=.." >> $3
		echo "endif" >> $3
		echo "ifneq (\"\$(wildcard \$(NHSROOT)/$BUILDERINCL))\",\"\")" >> $3
		echo "-include \$(NHSROOT)/$BUILDERINCL" >> $3
		echo "endif" >> $3
		;;
	"bsd")
		echo ".ifdef MAKEFILE_TOP" >> $3
		echo "NHSROOT=." >> $3
		echo ".else" >> $3
		echo "NHSROOT=.." >> $3
		echo ".endif" >> $3
		echo ".if exists(\$(NHSROOT)/$BUILDERINCL)" >> $3
		echo ".include \"\$(NHSROOT)/$BUILDERINCL\"" >> $3
		echo ".endif" >> $3
		;;
	*)
esac
echo "" >> $3

echo "###" >> $3
echo "### Start $5 PRE" >> $3
echo "###" >> $3
awk '/^#-PRE/,/^#-POST/{ \
	if(index($0, "#-PRE") == 1) print "# (new segment at source line",NR,")"; \
	if(index($0, "#-INCLUDE") == 1)	system("cat hints/include/"$2); \
	else if(index($0, "#-P") != 1) print}' $4 >> $3
echo "### End $5 PRE" >> $3
echo "" >> $3

echo "###" >> $3
echo "### Start $1" >> $3
echo "###" >> $3
cat $1 >> $3
echo "### End $1" >> $3
echo "" >> $3

echo "###" >> $3
echo "### Start $5 POST" >> $3
echo "###" >> $3
awk '/^#-POST/,/^#-PRE/{ \
	if(index($0, "#-POST") == 1) print "# (new segment at source line",NR,")"; \
	if(index($0, "#-INCLUDE") == 1)	system("cat hints/include/"$2); \
	else if(index($0, "#-P") != 1) print}' $4 >> $3
echo "### End $5 POST" >> $3