#!/bin/bash

function show_help
{
	cat << EOF
Non-autotool config script for MLT.

Help options:

  --help                  - this information

General build options:

  --prefix=directory      - install prefix for path (default: $prefix)
  --enable-gpl            - Enable GPL components
  --disable-debug         - Compile without debug support (default: on)
  --disable-mmx           - Compile without MMX support (default: on)
  --cpu='cpu'             - Compile for a specific CPU/architectre (default: none)

Module disables options:

EOF

	for i in src/modules/*
	do
		[ -d $i ] && [ "`basename $i`" != "CVS" ] && echo `basename $i` `[ -f $i/gpl ] && echo [GPL]`
	done |
	awk '{ printf( "  --disable-%-14.14s- Disable the %s module %s\n", $1, $1, $2 ); }'

	echo
	echo "  NOTE: libraries marked [GPL] will not be built unless --enable-gpl is stipulated."
	echo
}

function build_config
{
	(
		echo "version=$version"
		echo "prefix=$prefix"
		echo "bindir=$prefix/bin"

		[ "$mmx" = "true" ] && 
		echo "MMX_FLAGS=-DUSE_MMX"

		[ "$debug" = "true" ] && 
		echo "DEBUG_FLAGS=-g"

		echo "LARGE_FILE=-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE"

		[ "$cpu" != "" ] &&
		echo "TARGETARCH=-march=$cpu" &&
		echo "TARGETCPU=-mcpu=$cpu"

		[ "`uname`" = "Linux" ] &&
		echo "LIBDL=-ldl"

		echo "OPTIMISATIONS=-O4 -pipe -ffast-math -fomit-frame-pointer"
		echo "CFLAGS+=-Wall \$(TARGETARCH) \$(TARGETCPU) \$(OPTIMISATIONS) \$(MMX_FLAGS) \$(DEBUG_FLAGS) \$(LARGE_FILE) -pthread"
	) > config.mak

	echo "#!/bin/sh" > mlt-config
	(
		echo export version=$version
		echo export prefix=$prefix
		echo export bindir=$prefix/bin
	) >> mlt-config

	cat < mlt-config-template >> mlt-config

	echo -n > packages.dat
}

function build_pkgconfig
{
	for i in framework valerie miracle
	do
		echo "prefix=$prefix" >mlt-$i.pc
		echo "exec_prefix=$prefix" >>mlt-$i.pc
		echo "libdir=$prefix/lib" >>mlt-$i.pc
		echo "includedir=$prefix/include" >>mlt-$i.pc
		echo "version=$version" >>mlt-$i.pc
		echo "cflags=`grep ^$i packages.dat | cut -f 2`" >>mlt-$i.pc
		echo "libs=`grep ^$i packages.dat | cut -f 3`" >>mlt-$i.pc
		cat mlt-$i.pc.in >>mlt-$i.pc
	done
}

# Debug mode
set +x

# Define build directory for scripts called
export build_dir=`dirname $0`
export prefix=/usr/local
export help=0
export version=0.1.0
export debug=true
export mmx=true
export gpl=false
export cpu=

# Iterate through arguments
for i in "$@"
do
	case $i in
		--help )			help=1 ;;
		--prefix=* )		prefix="${i#--prefix=}" ;;
		--disable-debug )	debug=false ;;
		--disable-mmx )		mmx=false ;;
		--enable-gpl )		gpl=true ;;
		--cpu=* )			cpu="${i#--cpu=}" ;;
	esac
done

# Show help if requested
[ $help = 1 ] && show_help || build_config

# Iterate through each of the components
for i in framework modules inigo valerie miracle humperdink
do
	if [ -x src/$i/configure ]
	then
		[ $help = 0 ] && echo "Configuring `basename $i`:"
		pushd src/$i > /dev/null
		./configure "$@"
		[ $? != 0 ] && exit 1
		popd > /dev/null
	fi
done

# Build the pkg-config files
build_pkgconfig

# Report GPL Usage
[ $help != 1 ] && 
( [ "$gpl" = "false" ] && 
echo "GPL Components are disabled" || 
echo "GPL License Used" )