#!/bin/sh

# genmake
# GENERATE OS-SPECIFIC MINI-MAKEFILES
# IT'S JUST EASIER KEEPING ALL THE INFORMATION IN ONE PLACE 
# Usage: genmake <OS-TYPE-LIST>

# USUALLY JUST SETS CFLAGS BUT CAN ALSO SET THE FOLLOWING
# LIBS SHELL CC MAKE

if test "$#" -gt "0"
then
	OSTYPES=$@
else
	OSTYPES="aix bsdi bsdi4 caldera darwin debian dgux dynix fedora freebsd generic hpux hpux9 irix linux mandrake netbsd openbsd osf redhat redhatES sco sco3 sinix solaris sunos suse ultrix unixware unixware7"
fi

# IF gcc IS PRESENT, USE IT
if test -f "/usr/local/bin/gcc"
then
	CC="gcc"
else
	XX=`type gcc 2>/dev/null`
	if [ "$XX" = "" -o  "$XX" = "gcc not found" ]
	then
		CC="cc"
	else
		CC="gcc"
	fi
fi

workdir=`echo $0 | sed 's/genmake//g'`

for BBOS in $OSTYPES
do
	BBENV=""
	LIBS=""
	CFLAGS=""

	case $BBOS in
		freebsd|bsdi*|darwin|netbsd|openbsd) echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -DZOMBIE -D${BBOS} -DGETTIMEOFDAY -DREGEXEC -O"
		;;
		dgux) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DBZERO -DTIMEH -DREGEXEC"
			LIBS="-lnsl -lsocket" 
		;;
		dynix) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -DREGEXEC"
			LIBS="-lgen -lnsl -lsocket" 
		;;
		hpux) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -DREGEXEC -DGETTIMEOFDAY"
		;;
		hpux9) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -DREGEXEC"
		;;
		irix|generic) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DREGEXEC"
		;;
		osf) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DREGEXEC -DZOMBIE"
		;;
		sco) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DREGEXEC -DTIMEH"
			LIBS="-lsocket"
		;;
		sco3) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DREGEX -DTIMEH"
			LIBS="-lsocket"
		;;
		sinix) 	echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DBZERO -DSIGSETJMP -DZOMBIE -DREGEXEC"

			LIBS="-lnsl -lsocket -s"
		;;
		solaris) echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DBZERO -DGETTIMEOFDAY -DREGEXEC"
			LIBS="-ll -lnsl -lsocket -lkstat"
		;;
		sunos) echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O -DSEEK_END=2 -DREGEXEC"
		;;
		aix) 	echo "Making $BBOS makefile"
			CC="cc"
			CFLAGS="${CFLAGS} -D${BBOS} -DTIMEH -DREGEXEC -DGETTIMEOFDAY"
		;;
		linux|caldera|debian|mandrake|redhat*|suse|fedora) echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -DSIGSETJMP -O -D${BBOS} -DGETTIMEOFDAY -DREGEXEC -DTIMEH"
		;;
		ultrix) echo "Making $BBOS makefile"
			CFLAGS="${CFLAGS} -D${BBOS} -O DZOMBIE -DSYSLOG -DREGEXEC"
		;;
		unixware*) echo "Making $BBOS makefile"
			LIBS="-lgen  -lnsl -lsocket"
			CFLAGS="${CFLAGS} -O -DBZERO -D${BBOS} -DREGEXEC"
		;;
		*)	echo "*** Can't make Makefile for $BBOS"
			continue
		;;
	esac


	workfile="${workdir}/makefile.${BBOS}"

	# NOW MAKE THE MAKEFILE
	echo "# Makefile for $BBOS
# Generated by genmake on `date`

# OS specific compiler directives

# -DBZERO               - IF YOU DON'T HAVE bzero()
# -DZOMBIE              - IF zombie PROCESSES ARE GENERATED
# -DGETTIMEOFDAY        - TO GET DURATION STATISTICS
# -DREGEXEC             - IF YOUR COMPILER SUPPORTS regexec(),regcomp()
# -DREGEX               - IF YOUR COMPILER SUPPORTS regex(),regcmp()
# -DRE_EXEC             - IF YOUR COMPILER SUPPORTS re_exec(),re_comp()
# -DTIMEH               - IF YOUR OS HAS time.h INSTEAD OF sys/time.h
# -DSIGSETJMP           - IF YOUR OS SUPPORTS sigsetjmp() AND DOES NOT 
#				HANDLE SIGNALS PROPERLY WITH setjmp()
" > $workfile

	if test "$BBOS"
	then
		echo "BBOS = \"${BBOS}\"" >> $workfile
		BBENV="$BBENV BBOS=\${BBOS}"
	fi
	if test "$CC"
	then
		echo "CC = \"${CC}\"" >> $workfile
		BBENV="$BBENV CC=\${CC}"
	fi
	if test "$CFLAGS"
	then
		echo "CFLAGS = \"${CFLAGS}\"" >> $workfile
		BBENV="$BBENV CFLAGS=\${CFLAGS}"
	fi
	if test "$LIBS"
	then
		echo "LIBS = \"${LIBS}\"" >> $workfile
		BBENV="$BBENV LIBS=\${LIBS}"
	fi
	echo "
BBENV = ${BBENV}

all:
	\${BBENV} make -e bball
" >> $workfile

done