# $Id: common.gmk,v 1.43 2007/06/28 14:33:38 gcosmo Exp $
# ----------------------------------------------------------------
# Common part of GNUmakefile for libraries.  John Allison, 5/7/95.
# ----------------------------------------------------------------
# Libraries are created according to G4SYSTEM. G.Cosmo, 11/6/96.
# Introduced G4LIBDIR and G4TMPDIR. G.Cosmo, 23/6/98.
# Introduced QT moc rule,L. Garnier 12/6/07.

ifndef G4LIBDIR
  G4LIBDIR := $(G4LIB)/$(G4SYSTEM)
endif
G4TMPDIR := $(G4TMP)/$(G4SYSTEM)/$(name)

moc_inc = $(shell grep -l "Q_OBJECT" include/*.hh )
moc_files := $(patsubst include/%.hh, src/%_moc.cc, $(moc_inc))
sources := $(wildcard src/*.cc)
sources += $(moc_files)
objects := $(patsubst src/%.cc,$(G4TMPDIR)/%.o,$(sources))
dependencies := $(patsubst src/%.cc,$(G4TMPDIR)/%.d,$(sources))

   g4libraries_to_build :=
ifeq ($(G4LIB_NO_SHARED),)
ifneq ($(G4LIB_BUILD_SHARED),)
   g4libraries_to_build += $(G4LIBDIR)/lib$(name).$(SHEXT)
endif
endif
ifneq ($(G4LIB_BUILD_STATIC),)
   g4libraries_to_build += $(G4LIBDIR)/lib$(name).a
endif

# GPPFLAGS is defined here to make the .d file(s) and include it(them).

GPPFLAGS := "-M"

###############################################################################
#
# Actual gmake targets.
#

lib: $(g4libraries_to_build)

ifeq ($(G4LIB_NO_SHARED),)
ifneq ($(G4LIB_BUILD_SHARED),)
# Make shared library.
$(G4LIBDIR)/lib$(name).$(SHEXT): $(G4TMPDIR)/obj.last
	@if [ ! -d $(G4LIBDIR) ] ; then mkdir $(G4LIBDIR) ;fi
	@echo Creating shared library $@ ...
	@$(RM) $@
#      use architecture specific macro defined in sys/$(G4SYSTEM).gmk
	$(build-granular-shared-lib)
endif
endif

ifneq ($(G4LIB_BUILD_STATIC),)
# Make static (archive) library.
$(G4LIBDIR)/lib$(name).a: $(G4TMPDIR)/obj.last
	@if [ ! -d $(G4LIBDIR) ] ; then mkdir $(G4LIBDIR) ;fi
	@echo Creating/replacing object files in $(G4LIBDIR)/lib$(name).a ...
	@rm -f $(G4LIBDIR)/lib$(name).a
	@$(AR) $(OUT_LIB)$(G4LIBDIR)/lib$(name).a $(G4TMPDIR)/*.o
	@if [ X$(G4SYSTEM) != XWIN32-VC ] ; then  \
	if [ -f /usr/bin/ranlib -o -f /bin/ranlib ] ; then \
	ranlib $(G4LIBDIR)/lib$(name).a ; fi ; fi
endif

###############################################################################
#
# Actual moc files for qt files
#
# moc sources and headers: used for Qt signal/slot 
# - all headers which use signals/slots have the macro "Q_OBJECT" present
#  in the class definitions; these all need to be processed by the
#  "meta object compiler (moc)" which generates extra source code to
#  implement the signal/slots, i.e., if "foo.h" contains the token "Q_OBJECT"
#  it will be used by moc to generate the file "foo_moc.cpp" (the _moc. is
#   just an arbitrary extension to make it easier to identify sources
#   generated by moc).

src/%_moc.cc: include/%.hh
	@echo Making moc file for $< ...
	@if [ `$(QTHOME)/bin/moc -v 2>&1 | grep "Qt 3" | wc -l ` -gt 0 ]; then \
	$(MOC) -o $@ $<;\
	else $(MOC) $(MOC_MACRO) -o $@ $<; \
	fi;

###############################################################################
#
# Actual targets for .o, .d files
#

$(G4TMPDIR)/%.o: src/%.cc
ifdef CPPVERBOSE
	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $(OUT_OBJ)$(G4TMPDIR)/$(*F).o src/$*.cc
else
	@echo Compiling $*.cc ...
	@$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $(OUT_OBJ)$(G4TMPDIR)/$(*F).o src/$*.cc
endif

# .PHONY targets are executed regardless of time-stamp of any file of
# same name.
.PHONY: all moc_inc obj lib clean clean_libs includes

obj: $(G4TMPDIR)/obj.last

# Touch the versioning file
$(G4TMPDIR)/obj.last: $(objects)
	@touch $@

# Make the .d file(s) and include it(them).

# The ideas for this come from the GNU Make Manual, Section 4.12,
# Generating Prerequisites Automatically.  The g++ compiler has an
# option -M or -MM to write to standard output a list of dependencies
# based on the #include statements.  The "sed" adds the dependency
# file itself as a second target.  The result is a mini-makefile which
# specifies the .o and .d files as targets which depend on all the
# files found through the #include statements.  This file is then
# included, causing GNU Make to honour these dependencies.

# The "set -e" causes the shell to exit with an error when the "g++"
# fails (otherwise it would only notice the last command in the
# pipeline, namely "sed").  GNU Make notices the error and exits
# sooner than it otherwise would (still not as soon as I expect,
# though!).  Even then, an empty file is made, so "[ -s $@ ] || rm -f
# $@" removes it ([ -s filename ] gives zero exit code only if file
# exists and has a size greater than zero).  This avoids making
# corrupt .d files which would play havoc with your next build.

$(G4TMPDIR)/%.d: src/%.cc
	@echo Making dependency for file $< ...
	@if [ ! -d $(G4TMPDIR) ] ; then mkdir -p $(G4TMPDIR)  ;fi
	@set -e;\
	g++ $(GPPFLAGS) $(CPPFLAGS) -w $< |\
	sed 's!$*\.o!$(G4TMPDIR)/& $@!' >$@;\
	[ -s $@ ] || rm -f $@
ifneq ($(dependencies),)
ifneq ($(MAKECMDGOALS),clean)
-include $(dependencies)
endif
endif

#
# Installation of include files
#
installed_includes:=$(foreach file,$(wildcard include/*),$(shell test -f $(file) && echo $(file)))
installed_includes:=$(patsubst include/%,$(G4INCLUDE)/%,$(installed_includes))

# NOTE: the double colon rule allows to add other rules for the same target
#
includes:: $(installed_includes)

# Static Pattern rules, see GNU make manual for details.
#           target(s): target-pattern : dep-pattern
#
$(installed_includes): $(G4INCLUDE)/% : include/%
	@cp -p $< $@

#
# Clean up libraries
#
ifndef G4EXLIB
clean::
	@echo Cleaning up ...
	@rm -f $(G4LIBDIR)/lib$(name).a
	@rm -f $(G4LIBDIR)/*$(name).lib
	@rm -f $(G4LIBDIR)/*$(name).exp
	@rm -f $(G4LIBDIR)/lib$(name).$(SHEXT)
	@rm -rf $(G4TMPDIR)
endif

clean_libs::
	@echo Removing library lib$(name).a ...
	@rm -f $(G4LIBDIR)/*$(name).a
	@echo Removing library lib$(name).$(SHEXT) ...
	@rm -f $(G4LIBDIR)/*$(name).lib
	@rm -f $(G4LIBDIR)/*$(name).exp
	@rm -f $(G4LIBDIR)/*$(name).$(SHEXT)