#! /bin/bash

#
#  Output variables
#

# Path parameters
PREFIX="$HOME/.local"
# Individual component selection
BUILD_fxsdk=1
BUILD_fxconv=1
BUILD_fxg1a=1
BUILD_fxos=1

#
#  Tool name checking
#

check()
{
	[[ $1 = "fxsdk"  ]] ||
	[[ $1 = "fxconv" ]] ||
	[[ $1 = "fxg1a"  ]] ||
	[[ $1 = "fxos"   ]]
}

#
#  Usage
#

help()
{
	cat << EOF
Configuration options for the fxSDK (fx9860g and fxcg50 development tools).

Tool selection:
  <tool> may be one of the following:
    "fxsdk"          Command-line options (you generally want this)
    "fxconv"         Asset conversion for gint (or any 4-aligned-VRAM system)
    "fxg1a"          G1A file wrapper, editor and analyzer
    "fxos"           OS fiddling tool, including syscall disassembly

  --enable-<tool>    Build and install the selected tool [default]
  --disable-<tool>   Do not build or install the selected tool

Install folders:
  Executables will be installed in <prefix>/bin and runtime data in
  <prefix>/share/fxsdk.

  --prefix=<prefix>  Base install folder [default $HOME/.local]
EOF
	exit 0
}

#
#  Argument parsing
#

for arg; do case "$arg" in
	-h | -? | --help)
		help;;

	--prefix=*)
		PREFIX=${arg#--prefix=};;

	--enable-*)
		tool="${arg#--enable-}"
		if ! check $tool; then
			echo "error: cannot enable $tool: unknown tool"
			exit 1
		fi

		eval "BUILD_${tool}=1";;

	--disable-*)
		tool="${arg#--disable-}"
		if ! check $tool; then
			echo "error: cannot disable $tool: unknown tool"
			exit 1
		fi

		eval "BUILD_${tool}=0";;

	*)
		echo "error: unrecognized option $arg"
		exit 1;;
esac; done

#
#  Makefile generation
#

gen()
{
	echo "PREFIX  = $PREFIX"
	echo -n "TARGETS ="

	[[ $BUILD_fxsdk  = 1 ]] && echo -n " fxsdk"
	[[ $BUILD_fxconv = 1 ]] && echo -n " fxconv"
	[[ $BUILD_fxg1a  = 1 ]] && echo -n " fxg1a"
	[[ $BUILD_fxos   = 1 ]] && echo -n " fxos"

	echo ""
}

echo "Configuration complete, the following has been saved in Makefile.cfg:"
echo ""

gen | tee Makefile.cfg

echo ""
echo "You can now 'make'."