#!/bin/sh

CXX=${CXX-g++}
PREFIX=/usr
STATIC_LIB_ONLY=no
VERSION=0.8.0

##
## 1. ARGS
## Reading configure arguments
##
while :
do
    case $# in
    0) break ;;
    esac

    option=$1 ; shift

    case $option in
    --*=*)
	optarg=`echo $option | sed -e 's/^[^=]*=//'`
	arguments="$arguments $option"
	;;
    esac
    case $option in
    --prefix* | --pre*)
	PREFIX=$optarg
	;;
    --static*)
	STATIC_LIB_ONLY=yes
	;;
    -help | --help | --hel | --he)
    # Omit some internal or obsolete options to make the list less imposing.
    # This message is too long to be a string in the A/UX 3.1 sh.
    cat << EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]
Configuration:
  --help                  print this message
Directory and file names:
  --prefix=PREFIX         install the library in  PREFIX/include and PREFIX/lib [/usr]
  --static		  build only the static version of the library [both static and dynamic]
EOF
    exit 0;
    ;;

    *)
    echo "${option}: invalid command-line switch"
    exit 1
    ;;
    esac
done


cat > Makefile <<EOF

CXX = ${CXX} 
VERSION=$VERSION
LIBNAME=libboard

DYNLIB_EXTENSION=so
STATICLIB_EXTENSION=a
DYNLIB_NAME=\$(LIBNAME).\$(DYNLIB_EXTENSION)
STATICLIB_NAME=\$(LIBNAME).\$(STATICLIB_EXTENSION)
DYNLIB=lib/\$(DYNLIB_NAME)
STATICLIB=lib/\$(STATICLIB_NAME)
PREFIX=$PREFIX
RM=rm -f
LD=\$(CXX)
LDFLAGSLIB=-shared
AR=ar
ARFLAGS=rv
LN=ln -s

CXXFLAGSOBJ=-fno-common -pedantic -Wall -g -I./include
CXXFLAGSEXEC=-fno-common -pedantic -Wall -g -I./include

.PHONY: all clean install examples lib doc

OBJS=obj/Board.o obj/Transforms.o obj/Shapes.o obj/Rect.o obj/Color.o

all: lib examples

EOF

LIBDEP="lib: \$(STATICLIB)"
[ "$STATIC_LIB_ONLY" = "no" ] && LIBDEP="lib: \$(STATICLIB) \$(DYNLIB)"

cat >> Makefile <<EOF
$LIBDEP

examples: lib bin/arithmetic bin/example1 bin/example2 bin/example3


\$(DYNLIB): \$(OBJS)
	\$(RM) \$@
	\$(LD) -o \$@ \$(LDFLAGSLIB) \$(OBJS)
	chmod 755 \$@

\$(STATICLIB): \$(OBJS)
	\$(RM) \$@
	\$(AR) \$(ARFLAGS) \$@ \$(OBJS)
	chmod 644 \$@

obj/%.o: src/%.cc  include/board/%.h
	\$(CXX) \$(CXXFLAGSOBJ) -c -o \$@ \$<

bin/%: examples/%.cc \$(STATICLIB)
	\$(CXX) \$(CXXFLAGSEXEC) -o \$@ \$< \$(STATICLIB)

clean:
	rm -f obj/*.o lib/libboard.a bin/* include/*~ include/board/*~ src/*~ examples/*~ *~

install: all
	install -d \$(PREFIX)/lib ; chmod 755 \$(PREFIX)/lib
	cp \$(STATICLIB) \$(PREFIX)/lib ; chmod 644 \$(PREFIX)/lib/\$(STATICLIB_NAME)
EOF
[ "$STATIC_LIB_ONLY" = "no" ] && echo "	cp \$(DYNLIB) \$(PREFIX)/lib ; chmod 755 \$(PREFIX)/lib/\$(DYNLIB_NAME)" >> Makefile
cat >> Makefile <<EOF
	install -d \$(PREFIX)/include/board
	chmod 755 \$(PREFIX)/include/board
	cp include/board/*.h \$(PREFIX)/include/board
	chmod 644 \$(PREFIX)/include/board/*.h
	\$(RM) \$(PREFIX)/include/Board.h
	cd \$(PREFIX)/include; \$(LN) board/Board.h ./Board.h
	
doc:
	rm -rf doc/html/* ; doxygen

install_doc: doc
	rm -rf \$(PREFIX)/share/doc/libboard/html
	install -d \$(PREFIX)/share/doc/libboard
	cp -r doc/html \$(PREFIX)/share/doc/libboard
EOF

cat <<EOF
Makefile has been created.
Possible commands are:
 make
 make install      (Will install in ${PREFIX}/include and ${PREFIX}/lib )
 make doc
 make install_doc  (Will install in ${PREFIX}/share/doc/libboard)
EOF