#! /bin/sh
# @configure_input@
#---------------------------------------------------------------------------#
# Copyright (C) 1995-1999 The University of Melbourne.
# This file may only be copied under the terms of the GNU General
# Public License - see the file COPYING in the Mercury distribution.
#---------------------------------------------------------------------------#

# C2INIT - Convert *.c to *_init.c
#
# This script outputs an appropriate init.c, given the .c files.
# Type `c2init --help' for usage message.
#

# IMPORTANT: the manpage is produced automatically from this help
# message, so if you change the help message, don't forget to check
# that the manpage still looks OK.
Help="\
Name:	c2init - Create Mercury initialization file.
Usage:	c2init [options] *.c *.init ...
Options: 
	-a, --aditi
		Generate a function to upload Aditi-RL data to a database.
	-c <n>, --max-calls <n>
		Break up the initialization into groups of at most <n> function
		calls.  (Default value of <n> is 40.)
	-i, --include-initialization-code
		Always include code that calls the initialization functions
		of the various modules. With this option, the debugger can use
		information from any modules that were compiled with execution
		tracing to print (partial) stack traces, and to print the
		values of variables in ancestors of the current call, even
		in grades in which this not normally possible.
	-t, --trace
		Enable execution tracing in the generated executable.
		Implies -i.
	-l, --library
		Don't generate a \`main()' function.
		Instead, generate a function
			mercury_main(int argc, char **argv);
		(declared in \"init.h\") that can be called from C code.
		(A more fine-grained interface is also available;
		see \"init.h\" for details.)
	-w <label>, --entry-point <label>
		Set entry point to <label>.
		(Default value is \`mercury__main_2_0'.)
	-x, --extra-inits
		Search \`.c' files for extra initialization functions.
		(This may be necessary if the C files contain
		hand-coded C code with \`INIT' comments, rather than
		containing only C code that was automatically generated
		by the Mercury compiler.)
Environment variables:
	MERCURY_MOD_LIB_DIR, MERCURY_MOD_LIB_MODS, MERCURY_MKINIT.
"

# If you change these, you will also need to change Mmake.common.in,
# scripts/ml.in, tools/bootcheck, tools/binary, tools/binary_step and
# tools/linear.
RT_LIB_NAME=mer_rt
STD_LIB_NAME=mer_std
TRACE_LIB_NAME=mer_trace
BROWSER_LIB_NAME=mer_browser

MERCURY_MOD_LIB_DIR=${MERCURY_MOD_LIB_DIR=@LIBDIR@/modules}
MKINIT=${MERCURY_MKINIT=mkinit}

# maximum number of calls to put in a single function
maxcalls=40
defentry=mercury__main_2_0
init_opt=""
trace_opt=""
library_opt=""
extra_inits_opt=""
aditi_opt=""

# include the file `init_grade_options.sh-subr'
@INIT_GRADE_OPTIONS@

while true; do
	case "$1" in
	-a|--aditi)
		aditi_opt="-a"; shift;;	
	-a-|--no-aditi)
		aditi_opt=""; shift;;	
	-c|--max-calls)
		maxcalls="$2"; shift;;

	-i|--include-initialization-code)
		init_opt="-i";;

	-t|--trace)
		trace_opt="-t";;

	-l|--library)
		library_opt="-l";;

	-l-|--no-library)
		library_opt="";;

	-w|--entry-point)
		defentry="$2"; shift;;

	-x|--extra-inits)
		extra_inits_opt="-x";;

	-x-|--no-extra-inits)
		extra_inits_opt="";;

	-h|--help|"-?")
		echo "$Help"
		exit 0;;

	# include the file `parse_grade_options.sh-subr'
	@PARSE_GRADE_OPTIONS@

	--)
		break;;

	-*)
		echo "`basename $0`: invalid option \`$1'" 1>&2;
		echo "Try \`$0 --help' for help." 1>&2;
		exit 1;;

	*)
		break;;
	esac
	shift
done

case $require_tracing in
	true)
		trace_opt="-t" ;;
esac

case $stack_trace in
	true)
		init_opt="-i" ;;
esac

case "$trace_opt" in
	-t)
		init_opt="-i"
		MERCURY_MOD_LIB_MODS=${MERCURY_MOD_LIB_MODS="\
				$MERCURY_MOD_LIB_DIR/$RT_LIB_NAME.init \
				$MERCURY_MOD_LIB_DIR/$STD_LIB_NAME.init \
				$MERCURY_MOD_LIB_DIR/$BROWSER_LIB_NAME.init \
			"}
		;;
	*)
		MERCURY_MOD_LIB_MODS=${MERCURY_MOD_LIB_MODS="\
				$MERCURY_MOD_LIB_DIR/$RT_LIB_NAME.init \
				$MERCURY_MOD_LIB_DIR/$STD_LIB_NAME.init \
			"}
		;;
esac

case $# in
	0) exec $MKINIT $aditi_opt -c"$maxcalls" $init_opt $trace_opt \
		$library_opt -w"$defentry" $extra_inits_opt \
		$MERCURY_MOD_LIB_MODS
	   ;;
	*) exec $MKINIT $aditi_opt -c"$maxcalls" $init_opt $trace_opt \
		$library_opt -w"$defentry" $extra_inits_opt "$@" \
		$MERCURY_MOD_LIB_MODS
	   ;;
esac