#!/bin/bash

# These are the project-specific variables

EXECUTABLE="dmtool"

# e.g., foo.so
LIBRARY=

TEST=

# List of libs as given to pkg-config
LIBS="libconfuse nlohmann_json"

CXXFLAGS="-Wall -fPIC -std=c++20"

LDFLAGS=

SOURCE_DIR="src"

EXTRAS="
parsed: parser/scrapeToJson.py parser/utils.py parser/verified.txt
	python parser/scrapeToJson.py
	touch parsed/
"

INSTALL='
install: $(EXECUTABLE) parsed
	install -d $(DESTDIR)$(PREFIX)/share/dmtool/
	cp -r parsed/* $(DESTDIR)$(PREFIX)/share/dmtool/
	install -d $(DESTDIR)$(PREFIX)/bin/
	install -m 755 $(EXECUTABLE) $(DESTDIR)$(PREFIX)/bin/
	install -m 644 files/dmtool.bash $(DESTDIR)`pkg-config --variable=completionsdir bash-completion`/dmtool
	install -m 644 files/dmtool.conf $(DESTDIR)/etc/dmtool.conf
'

# Below here shouldn't need editing

SOURCES=`find $SOURCE_DIR | grep .cc$ | tr '\n' ' '`

PKG_CONFIG_CFLAGS=
PKG_CONFIG_LIBS=
if [ -n "$LIBS" ]; then
    PKG_CONFIG_CFLAGS='`pkg-config $(LIBS) --cflags`'
    PKG_CONFIG_LIBS='`pkg-config $(LIBS) --libs`'
fi

ALL="all: \$(SOURCES)"

LIBRULE=
if [ -n "$LIBRARY" ]; then
    LIBRULE="
\$(LIBRARY): \$(OBJECTS)
	\$(CXX) \$(OBJECTS) -shared -o \$@ \$(LDFLAGS) \$(LDLIBS)
"
    ALL="$ALL \$(LIBRARY)"
fi

EXERULE=
if [ -n "$EXECUTABLE" ]; then
    EXERULE="
\$(EXECUTABLE): \$(OBJECTS)
	\$(CXX) \$(OBJECTS) -o \$@ \$(LDFLAGS) \$(LDLIBS)
"
    ALL="$ALL \$(EXECUTABLE)"
fi

TESTRULE=
if [ -n "$TEST" ]; then
    TESTRULE="
\$(TEST): \$(OBJECTS)
	\$(CXX) \$(OBJECTS) -o \$@ \$(LDFLAGS) \$(LDLIBS) -lcppunit

test: \$(TEST)
	./\$(TEST)
"
    ALL="$ALL \$(TEST)"
fi


ORULES=$(for cc in `find $SOURCE_DIR | grep .cc$`; do g++ -MM -MT `cut -d'.' -f-1 <<< $cc`.o $cc; done)

cat << EOF > Makefile
LIBS=$LIBS
override CXXFLAGS += $CXXFLAGS $PKG_CONFIG_CFLAGS
override LDFLAGS += $LDFLAGS $PKG_CONFIG_LIBS
CC=\$(CXX)
SOURCES=$SOURCES
OBJECTS=\$(SOURCES:.cc=.o)
LIBRARY=$LIBRARY
EXECUTABLE=$EXECUTABLE
PREFIX := /usr

$ALL
$EXTRAS$INSTALL$LIBRULE$EXERULE$TESTRULE

$ORULES

clean:
	\$(RM) \$(LIBRARY) \$(EXECUTABLE) \$(TEST) \$(OBJECTS)
EOF