#
# Makefile - Makefile of libpoly2d
#
# Written 2012, 2013 by Werner Almesberger
# Copyright 2012, 2013 by Werner Almesberger
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#

PREFIX ?= /usr/local

SHELL = /bin/bash

LIB = libpoly2d.a
OBJS = v2d_intersect.o v2d_line_distance.o \
       p2d_area.o p2d_area_holes.o \
       p2d_attrib.o p2d_contains_point.o p2d_contains_poly.o \
       p2d_copy.o p2d_free.o p2d_gnuplot.o p2d_make.o p2d_offset.o \
       p2d_hsort.o f2d_tri_holes.o f2d_tri.o

CFLAGS_WARN = -Wall -Wshadow -Wmissing-prototypes \
	      -Wmissing-declarations -Wno-format-zero-length

CFLAGS = $(CFLAGS_WARN) -g -std=gnu99
CXXFLAGS = -Wall -frounding-math
LDFLAGS =
LDLIBS = -lm

# ----- Verbosity control -----------------------------------------------------

CC_normal	:= $(CC)
CXX_normal	:= $(CXX)
AR_normal	:= $(AR)
DEPEND_normal	:= $(CPP) $(CFLAGS) -MM -MG
DEPENDXX_normal	:= $(CPP) $(CXXFLAGS) -MM -MG

CC_quiet	= @echo "  CC       " $@ && $(CC_normal)
CXX_quiet	= @echo "  CXX      " $@ && $(CXX_normal)
AR_quiet	= @echo "  AR       " $@ && $(AR_normal)
DEPEND_quiet	= @$(DEPEND_normal)
DEPENDXX_quiet	= @$(DEPENDXX_normal)

ifeq ($(V),1)
    CC		= $(CC_normal)
    CXX		= $(CXX_normal)
    AR		= $(AR_normal)
    DEPEND	= $(DEPEND_normal)
    DEPENDXX	= $(DEPENDXX_normal)
else
    CC		= $(CC_quiet)
    CXX		= $(CXX_quiet)
    AR		= $(AR_quiet)
    DEPEND	= $(DEPEND_quiet)
    DEPENDXX	= $(DEPENDXX_quiet)
endif

# ----- Rules -----------------------------------------------------------------

.PHONY:		all clean spotless
.PHONY:		test tests valgrind

all:		$(LIB)

$(LIB):		$(OBJS)
		$(AR) cr $@ $^

clean:
		rm -f $(OBJS) $(OBJS:.o=.d)

spotless:	clean
		rm -f $(LIB)

# ----- Install / uninstall ---------------------------------------------------

install:	all
		mkdir -p $(DESTDIR)/$(PREFIX)/bin/
		install -m 755 $(MAIN) $(DESTDIR)/$(PREFIX)/bin/

uninstall:
		rm -f $(DESTDIR)/$(PREFIX)/bin/$(MAIN)

# ----- Dependencies ----------------------------------------------------------

# compile and generate dependencies, from fped, based on
# http://scottmcpeak.com/autodepend/autodepend.html

%.o:		%.c
		$(CC) -c $(CFLAGS) $*.c -o $*.o
		$(DEPEND) $*.c | \
		  sed -e \
		    '/^\(.*:\)\? */{p;s///;s/ *\\\?$$/ /;s/  */:\n/g;H;}' \
		    -e '$${g;p;}' -e d >$*.d; \
		  [ "$${PIPESTATUS[*]}" = "0 0" ] || { rm -f $*.d; exit 1; }

%.o:		%.cpp
		$(CXX) -c $(CXXFLAGS) $*.cpp -o $*.o
		$(DEPENDXX) $*.cpp | \
		  sed -e \
		    '/^\(.*:\)\? */{p;s///;s/ *\\\?$$/ /;s/  */:\n/g;H;}' \
		    -e '$${g;p;}' -e d >$*.d; \
		  [ "$${PIPESTATUS[*]}" = "0 0" ] || { rm -f $*.d; exit 1; }

-include $(OBJS:.o=.d)

# ----- Tests -----------------------------------------------------------------

test tests:	all
		LANG= sh -c \
		  'passed=0 && cd test && \
		  for n in [a-z]*; do \
		  [ $$n != core ] && SCRIPT=$$n . ./$$n; done; \
		  echo "Passed all $$passed tests"'

valgrind:
		VALGRIND="valgrind -q" $(MAKE) tests