#
# Copyright (C) 2015 Guido Berhoerster <guido+libpws@berhoerster.name>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

PACKAGE =	libpws
VERSION =	1.0.0
DISTNAME :=	$(PACKAGE)-$(VERSION)

# gcc, clang, icc, Sun/Solaris Studio
CC :=		$(CC) -std=c99
COMPILE.c =	$(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(XCPPFLAGS) $(TARGET_ARCH) -c
# gcc, clang, icc
MAKEDEPEND.c =	$(CC) -MM $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(XCPPFLAGS)
# Sun/Solaris Studio
#MAKEDEPEND.c =	$(CC) -xM1 $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(XCPPFLAGS)
# X makedepend
#MAKEDEPEND.c =	makedepend -f- -Y -- $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(XCPPFLAGS) --
LINK.c =	$(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(XCPPFLAGS) $(LDFLAGS) $(XLDFLAGS) $(TARGET_ARCH)
LINK.o =	$(CC) $(LDFLAGS) $(XLDFLAGS) $(TARGET_ARCH)
AR :=		ar
RANLIB :=	ranlib
INSTALL :=	install
INSTALL.exec :=	$(INSTALL) -D -m 0755
INSTALL.lib :=	$(INSTALL) -D -m 0644
INSTALL.data :=	$(INSTALL) -D -m 0644
PAX :=		pax
GZIP :=		gzip
SED :=		sed

DESTDIR ?=
prefix ?=	/usr/local
bindir ?=	$(prefix)/bin
libdir ?=	$(prefix)/lib
includedir ?=	$(prefix)/include
datadir ?=	$(prefix)/share

OS_NAME :=	$(shell uname -s)
OS_RELEASE :=	$(shell uname -r)

ifeq ($(OS_NAME),Linux)
  HAVE_ARC4RANDOM ?=	0
  HAVE_ENDIAN_H ?=	1
  HAVE_SYS_ENDIAN_H ?=	0
  HAVE_GETENTROPY ?=	0
  HAVE_SYS_TREE_H ?=	0
else ifneq ($(findstring $(OS_NAME),FreeBSD DragonFly),)
  HAVE_ARC4RANDOM ?=	1
  HAVE_ENDIAN_H ?=	0
  HAVE_SYS_ENDIAN_H ?=	1
  HAVE_GETENTROPY ?=	0
  HAVE_SYS_TREE_H ?=	1
else ifeq ($(OS_NAME),NetBSD)
  HAVE_ARC4RANDOM ?=	1
  HAVE_ENDIAN_H ?=	0
  HAVE_SYS_ENDIAN_H ?=	1
  HAVE_GETENTROPY ?=	0
  HAVE_SYS_TREE_H ?=	1
else ifeq ($(OS_NAME),OpenBSD)
  HAVE_ARC4RANDOM ?=	1
  HAVE_ENDIAN_H ?=	0
  HAVE_SYS_ENDIAN_H ?=	1
  HAVE_GETENTROPY ?=	1
  HAVE_SYS_TREE_H ?=	1
else ifeq ($(OS_NAME),SunOS)
  HAVE_ARC4RANDOM ?=	0
  HAVE_ENDIAN_H ?=	0
  HAVE_SYS_ENDIAN_H ?=	0
  HAVE_GETENTROPY ?=	0
  HAVE_SYS_TREE_H ?=	0
else
  HAVE_ARC4RANDOM ?=	0
  HAVE_ENDIAN_H ?=	0
  HAVE_SYS_ENDIAN_H ?=	0
  HAVE_GETENTROPY ?=	0
  HAVE_SYS_TREE_H ?=	0
endif

LIBPWS_OBJS =		pws.o \
			pws-file.o \
			pws-record.o \
			pws-field.o \
			pws-random.o
LIBPWS_LIB =		$(PACKAGE).a
LIBPWS_LIB_MEMBERS =	$(LIBPWS_OBJS:%.o=$(LIBPWS_LIB)(%.o))

OBJS =			$(LIBPWS_OBJS)

.DEFAULT_TARGET = all

.PHONY: all clean clobber dist install

all: $(LIBPWS_LIB)

XCPPFLAGS = -Iinclude
ifeq ($(HAVE_ARC4RANDOM),1)
  XCPPFLAGS +=	-DHAVE_ARC4RANDOM
endif
ifeq ($(HAVE_ENDIAN_H),1)
  XCPPFLAGS +=	-DHAVE_ENDIAN_H
else ifeq ($(HAVE_SYS_ENDIAN_H),1)
  XCPPFLAGS +=	-DHAVE_SYS_ENDIAN_H
else
  LIBPWS_OBJS += compat/endian.o
endif
ifeq ($(HAVE_GETENTROPY),1)
  XCPPFLAGS +=	-DHAVE_GETENTROPY
else
  LIBPWS_OBJS += compat/getentropy.o
endif
ifeq ($(HAVE_SYS_TREE_H),1)
  XCPPFLAGS +=	-DHAVE_SYS_TREE_H
endif
ifneq ($(findstring $(OS_NAME),FreeBSD DragonFly OpenBSD),)
  XCPPFLAGS +=	-I/usr/local/include
  XLDFLAGS +=	-L/usr/local/lib
else ifeq ($(OS_NAME),NetBSD)
  XCPPFLAGS +=	-I/usr/pkg/include
  XLDFLAGS +=	-L/usr/pkg/lib
endif
ifeq ($(OS_NAME),SunOS)
  XCPPFLAGS +=	-I/usr/xpg4/include -D__EXTENSIONS__
  XLDFLAGS +=	-L/usr/xpg4/lib -R/usr/xpg4/lib
endif
ifeq ($(findstring $(OS_NAME),FreeBSD DragonFly NetBSD OpenBSD),)
  XCPPFLAGS +=	-D_XOPEN_SOURCE=600
endif

$(LIBPWS_LIB): $(LIBPWS_LIB_MEMBERS)

%.o: %.c
	$(MAKEDEPEND.c) $< | $(SED) -f deps.sed >$*.d
	$(COMPILE.c) -o $@ $<

(%): %
	$(AR) $(ARFLAGS) $@ $<
	$(RANLIB) $@

install:
	for header in include/*.h; do \
	    $(INSTALL.data) $${header} \
	        "$(DESTDIR)$(includedir)/$(PACKAGE)/$${header##*/}"; \
	done
	$(INSTALL.lib) $(LIBPWS_LIB) \
	    "$(DESTDIR)$(libdir)/$(notdir $(LIBPWS_LIB))"

clean:
	rm -f $(LIBPWS_LIB) $(LIBPWS_OBJS)

clobber: clean
	rm -f $(patsubst %.o,%.d,$(OBJS))

dist: clobber
	$(PAX) -w -x ustar -s ',.*/\..*,,' -s ',./[^/]*\.tar\.gz,,' \
	    -s ',^\.$$,,' -s ',\./,$(DISTNAME)/,' . | \
	    $(GZIP) > $(DISTNAME).tar.gz

-include $(patsubst %.o,%.d,$(OBJS))