configure

#!/bin/sh

if test "x$1" != "x"; then
    # echo Found input parameter -- $1
    #  Now see if the parameter is --prefix=
    if test "x${1#--prefix=}" != "x$1"; then
        # echo "Found --prefix in input args.  Setting prefix directory."
        prefix=${1#--prefix=}
    else
        # echo "Found unrecognized parameter in input args."
        #  Just use the default prefix dir.
        prefix=/usr/local
    fi

    pkglibdir=${prefix}/lib/gnucap
    plugpath=${pkglibdir}:$( gnucap-conf --pkglibdir )
    sysconfdir=${prefix}/etc
else
    # echo "No input parameter found."
    #  Just use the default prefix dir
    libs=$( gnucap-conf --libs )
    prefix=$( gnucap-conf --exec-prefix )
    pkglibdir=$( gnucap-conf --pkglibdir )
    plugpath=$( gnucap-conf --pkglibdir )
    sysconfdir=$( gnucap-conf --sysconfdir )
fi

gnucap_cppflags=$( gnucap-conf --cppflags )
gnucap_cxxflags="$( gnucap-conf --cxxflags ) -fPIC"
gnucap_includedir=$( gnucap-conf --includedir )

# TODO: check if gnucap-conf works, then use it.
libs=-lgnucap # $( gnucap-conf --libs )

# bug. this is not implemented consistently.
CXX=${CXX-c++}

#------------------------------------------------------------------------
srcdir=$(dirname $0)
# abs_srcdir=$(cd $srcdir; pwd)
if [ ! -f $srcdir/lang_qucs.cc ]; then
	echo could not find source directory
	exit 1
fi
case $srcdir in
	[\\/]* | ?:[\\/]*)
		top_srcdir_="$srcdir"
		;;
	\.)
		top_srcdir_=".."
		;;
	*)
		top_srcdir_="../$srcdir"
		;;
esac
#------------------------------------------------------------------------

STATUS="$*"

NOTICE="\#THIS_FILE_IS_AUTOMATICALLY_GENERATED"
# hmm, here?
GNUCSATOR_PKGLIBDIR=${pkglibdir}/qucs
PKGINCLUDEDIR=${prefix}/include/gnucap-qucs/

fill_template() {
  t=$( mktemp );
  sed -e "s#@prefix@#$prefix#g" \
    -e "s#@srcdir@#$srcdir#g" \
    -e "s#@top_srcdir@#$top_srcdir_#g" \
    -e "s#@exec_prefix@#$prefix#g" \
    -e "s#@libdir@#$prefix/lib#g" \
    -e "s#@NOTICE@#$NOTICE#g" \
    -e "s#@PKGINCLUDEDIR@#$PKGINCLUDEDIR#g" \
    -e "s#@includedir@#$\{prefix\}/include#g" \
    -e "s#@datarootdir@#$\{prefix\}/share/gnucap#g" \
    -e "s#@sysconfdir@#$sysconfdir#g" \
    -e "s#@pkglibdir@#$pkglibdir#g" \
    -e "s#@plugpath@#$plugpath#g" \
    -e "s#@CXXFLAGS@#$CCFLAGS#g" \
    -e "s#@libs@#$libs#g" \
    -e "s#@STATUS@#$STATUS#g" \
    -e "s#@CXX@#$CXX#g" < $srcdir/$1.in > $t
  if diff $1 $t 2> /dev/null > /dev/null; then
	rm $t;
  else
	mv $t $1;
  fi
}

mkdir -p tests

fill_template config.h
fill_template Makefile
fill_template tests/Makefile
fill_template gnucsator.rc

SUBDIRS="include qucsator contrib tests"
#------------------------------------------------------------------------
sub_configure() {
	echo sub_configure $1
	m="$1/Makefile"
	if [ "$top_srcdir_" = ".." ]; then
		srcdir_=".";
	else
		srcdir_="$top_srcdir_/$1";
	fi
	echo '#stub. need to run configure first' > $m
	echo "srcdir = $top_srcdir_/$1" >> $m
	echo "prefix = $prefix" >> $m
	echo '%: ; ${srcdir}/configure --prefix="${prefix}" --srcdir="${srcdir}" && ${MAKE} $@' >> $m
	echo 'all: ; ${srcdir}/configure --prefix="${prefix}" --srcdir="${srcdir}" && ${MAKE}' >> $m
	echo '.PHONY: all' >> $m
}
#------------------------------------------------------------------------
sub_makefile() {
	m="$1/Makefile"
	echo sub_makefile $m
	echo \# created by $0 do not edit >$m
	echo \#------------------------------------------------------------------------ >> $m
	echo "top_srcdir = $top_srcdir_" >> $m
	echo "srcdir = $top_srcdir_/$1" >> $m
	echo "prefix = $prefix" >> $m
	echo "exec_prefix = $prefix" >> $m
	echo "VPATH = \${srcdir}" >> $m
	echo "GNUCAP_CPPFLAGS = ${gnucap_cppflags}" >> $m
	echo "GNUCAP_CXXFLAGS = ${gnucap_cxxflags}" >> $m
	echo "GNUCAP_INCLUDEDIR = ${gnucap_includedir}" >> $m
	echo "pkgincludedir = ${PKGINCLUDEDIR}" >> $m
	echo "include \${srcdir}/MakeList" >> $m
	echo "include ../Make2" >> $m
	echo "include $top_srcdir_/Make3" >> $m
	[ -f ${srcdir}/${1}/Make.depend ] && \
	echo "include \${srcdir}/Make.depend" >> $m
}
#------------------------------------------------------------------------
for i in ${SUBDIRS}; do
	mkdir -p $i;
	if [ -f $srcdir/$i/configure ]; then
		sub_configure $i;
	else
		sub_makefile $i;
	fi
done
#------------------------------------------------------------------------

echo -n '# ' > config.log
date >> config.log
echo $0 "$@" >> config.log

echo prefix:     $prefix
echo pkglibdir:  $pkglibdir
echo plugpath:   $plugpath