# $Id$
#
# common rules for compilation.
#
# Variables:
#
# srcdir    ... source directory.
# top_srcdir    ... optionally, top source directory.
# CC        ... path of GNU C compiler
# CXX       ... path of GNU C++ compiler
# PKGCONFIG ... path of the pkg-config tool.
# WINDRES   ... windows resource compiler, if $(ARTIFACT).rc is to be compiled in.
# MOC       ... The path of the Qt moc binary. If empty, no moc processing will be undertaken.
# MOCHEADERS... optional list of Qt header files to preproces using moc.
# MOCFLAGS..... Flags to pass to Qt moc.
# UIC       ... The path of the uic-qt3 binary.
# UIC4      ... The path of the uic-qt4 binary.
# UICFILES  ... list of header files to preproces using uic.
# BUILDDATESOURCES... list of source files to preprocess with __VERSION__ and __BUILD_DATE__
# BISON     ... The path of the bison binary. If empty, no bison processing will be undertaken
# BISONFLAGS... Flags to pass to bison.
# YSOURCES  ... list of *.y files to be processed by bison
# FLEX      ... The path of the fley binary. If empty, no flex processing will be undertaken
# FLEXFLAGS ... Flags to pass to flex.
# LSOURCES  ... list of *.l files to be processed by flex
# EXTPKGS   ... list of external pkg-config packages.
# HEADERS   ... list of header files to install.
# HEADERDIR ... subdirectory of $(prefix)/include where to install headers.
# SOURCES   ... list of source packages to compile.
# INCLUDES  ... list of optional include directories
# CFLAGS    ... C options like -Wall -g -O2
# CXXFLAGS  ... C++ options like -Wall -g -O2
# BUILDTYPE ... lib,so,dll,exe,bin
# ARTIFACT  ... The name of the build artifact
# ABI_VERSION ... Version of the ABI for shared libraries, used to preprocess windows resources.
# NODEVRULES  ... If non-empty don't generate install-dev rules.
#
# SPECIALCOMPILEMK ... project specific special-foo.mk to include

ifeq ($(VERSION),)
VERSION=$(shell /usr/share/pba-cbs/sh/get_deb_version.sh $(srcdir) $(top_srcdir))
endif

OBJS:=$(addsuffix .o,$(basename $(SOURCES))) 
DEPENDS:=$(addsuffix .d,$(basename $(SOURCES))) 

ifneq ($(HEADERS),)
ABSHEADERS=$(addprefix $(srcdir)/,$(HEADERS))
endif

ifeq ($(HEADERDIR),)
HEADERDESTDIR=$(DESTDIR)$(prefix)/include
else
HEADERDESTDIR=$(DESTDIR)$(prefix)/include/$(HEADERDIR)
endif

ifeq ($(BUILDTYPE),dll)
ABI_CFLAGS=-DBUILD_$(subst -,_,$(ARTIFACT))_DLL
else ifeq ($(BUILDTYPE),so)
ABI_CFLAGS=-fPIC
else
ABI_CFLAGS=
endif

ifeq ($(EXTPKGS),)
EXT_CFLAGS=
else
EXT_CFLAGS=$(shell $(PKGCONFIG) --cflags $(EXTPKGS))
endif

ifneq ($(WINDRES),)
ifeq ($(BUILDTYPE),dll)
include /usr/share/pba-cbs/mk/special-compile-windres.mk
else ifeq ($(BUILDTYPE),exe)
include /usr/share/pba-cbs/mk/special-compile-windres.mk
endif
endif

ifneq ($(UIC),)
include /usr/share/pba-cbs/mk/special-compile-uic-qt3.mk
endif

ifneq ($(UIC4),)
include /usr/share/pba-cbs/mk/special-compile-uic-qt4.mk
endif

ifneq ($(MOC),)
include /usr/share/pba-cbs/mk/special-compile-moc.mk
endif

ifneq ($(BISON),)
include /usr/share/pba-cbs/mk/special-compile-bison.mk
endif

ifneq ($(FLEX),)
include /usr/share/pba-cbs/mk/special-compile-flex.mk
endif

ifneq ($(BUILDDATESOURCES),)
include /usr/share/pba-cbs/mk/special-compile-builddate.mk
endif

ifneq ($(SPECIALCOMPILEMK),)
include $(SPECIALCOMPILEMK)
endif

%.o %.d: $(srcdir)/%.c
	$(CC) $(ABI_CFLAGS) $(CFLAGS) $(EXT_CFLAGS) $(INCLUDES) -MMD -MT '$*.d $*.o' -c $< -o $*.o

%.o %.d: $(srcdir)/%.cpp
	$(CXX) $(ABI_CFLAGS) $(CXXFLAGS) $(EXT_CFLAGS) $(INCLUDES) -MMD -MT '$*.d $*.o' -c $< -o $*.o

%.o %.d: $(srcdir)/%.cc
	$(CXX) $(ABI_CFLAGS) $(CXXFLAGS) $(EXT_CFLAGS) $(INCLUDES) -MMD -MT '$*.d $*.o' -c $< -o $*.o

compile:: $(OBJS)

clean::
	rm -f $(OBJS) $(DEPENDS)

ifneq ($(HEADERS),)
ifeq ($(NODEVRULES),)
install-dev:: $(ABSHEADERS)
	mkdir -p $(HEADERDESTDIR)
	install -m 644 -p $(ABSHEADERS) $(HEADERDESTDIR)
endif
endif

ifneq ($(MAKECMDGOALS),clean)
include $(DEPENDS)
endif