configure

#! /bin/sh

# waf configure wrapper

# Fancy colors used to beautify the output a bit.
#
if [ "$NOCOLOR" ] ; then
    NORMAL=""
    RED=""
    GREEN=""
else
    NORMAL='\033[0m'
    RED='\033[01;91m'
    GREEN='\033[01;92m'
fi

EXIT_SUCCESS=0
EXIT_FAILURE=1
EXIT_ERROR=2
EXIT_BUG=10

calculateWorkingDir()
{
	CUR_DIR=$PWD
	#possible relative path
	WORKINGDIR=$(python -c 'import os; print os.path.dirname("'$0'")')
	cd $WORKINGDIR
	#abs path
	WORKINGDIR=`pwd`
	cd $CUR_DIR
}
# Checks for Python interpreter. Honours $PYTHON if set. Stores path to
# interpreter in $PYTHON.
#
checkPython()
{
	if [ -z "$PYTHON" ] ; then
	    PYTHON=`which python 2>/dev/null`
	fi
	printf "Checking for Python\t\t\t:  "
	if [ ! -x "$PYTHON" ] ; then
	  printf "${RED}not found!$NORMAL\n"
	  echo "Please make sure that the Python interpreter is available in your PATH"
	  echo "or invoke configure using the PYTHON flag, e.g."
	  echo "$ PYTHON=/usr/local/bin/python configure"
	  exit $EXIT_FAILURE
	fi
	printf "$GREEN$PYTHON$NORMAL\n"
}

# Checks for WAF. Honours $WAF if set. Stores path to 'waf' in $WAF.
# Requires that $PYTHON is set.
#
checkWAF()
{
	printf "Checking for WAF\t\t\t:  "
	#installed miniwaf in sourcedir
	if [ -z "$WAF" ] ; then
	    if [ -f "${WORKINGDIR}/waf" ] ; then
		WAF="${WORKINGDIR}/waf"
		if [ ! -x "$WAF" ] ; then
		    chmod +x $WAF
		fi
	    fi
	fi
	if [ -z "$WAF" ] ; then
	    if [ -f "${WORKINGDIR}/waf-light" ] ; then
		${WORKINGDIR}/waf-light --make-waf
	        WAF="${WORKINGDIR}/waf"
	    fi
	fi
	if [ -z $WAF ] && [ -n $WAFDIR ] ; then
		WORKINGDIR=$WAFDIR
		if [ -f "${WORKINGDIR}/../waf-light" ] ; then
			WAF="${WORKINGDIR}/../waf-light"
		fi
	fi
	#global installed waf with waf->waf.py link
	if [ -z "$WAF" ] ; then
	    WAF=`which waf 2>/dev/null`
	fi
	# neither waf nor miniwaf could be found
	if [ ! -x "$WAF" ] ; then
	    printf "${RED}not found$NORMAL\n"
	    echo "Go to http://code.google.com/p/waf/"
	    echo "and download a waf version"
	    exit $EXIT_FAILURE
	else
	  printf "$GREEN$WAF$NORMAL\n"
	fi
	WAF="$PYTHON $WAF"
}

# Generates a Makefile. Requires that $WAF is set.
#
generateMakefile()
{
	cat > Makefile << EOF
#!/usr/bin/make -f
# Waf Makefile wrapper
WAF_HOME=$CUR_DIR
.PHONY: all all-debug all-progress install uninstall clean distclean dist check tags

all:
	@$WAF build

all-debug:
	@$WAF -v build

all-progress:
	@$WAF -p build

install:
	@if test -n "\$(DESTDIR)"; then \\
	    $WAF install --destdir="\$(DESTDIR)"; \\
	else \\
	    $WAF install; \\
	fi;

uninstall:
	@if test -n "\$(DESTDIR)"; then \\
	    $WAF uninstall --destdir="\$(DESTDIR)"; \\
	else \\
	    $WAF uninstall; \\
	fi;

clean:
	@$WAF clean

distclean:
	@$WAF distclean
	@-rm -f Makefile

check:
	@$WAF check

dist:
	@$WAF dist

tags:
	@$WAF \$@


EOF
}

checkPython
calculateWorkingDir
checkWAF

$WAF configure $@ || exit $EXIT_ERROR

generateMakefile

exit $EXIT_SUCCESS