# Programs
CXX=@CXX@
TAR=tar

# Program parameters
CPPFLAGS=@CPPFLAGS@
CXXFLAGS=@CXXFLAGS@
LDFLAGS=@LDFLAGS@
LIBS=@LIBS@

# Configure flags
USE_INSTALLED_OMEGA=@ac_with_omega@

INCLUDES=src/C_omega.h
OMEGA_DIR=src/the-omega-project
OMEGA_LIB=$(OMEGA_DIR)/omega_lib/obj/libomega.a
OMEGA_MAKE_FLAGS= \
	CONFIGURE_CXXFLAGS="$(CPPFLAGS) $(CXXFLAGS)" \
	CONFIGURE_LDFLAGS="$(LDFLAGS)" \
	CONFIGURE_LIBS="$(LIBS)" \
	CONFIGURE_CXX="$(CXX)"

# If we're building the Omega library, then include its headers
ifeq ($(USE_INSTALLED_OMEGA),yes)
OMEGA_INCLUDE=
else
OMEGA_INCLUDE=-I$(OMEGA_DIR)/basic/include -I$(OMEGA_DIR)/omega_lib/include
endif

# If we're building the Omega library, then add it as a target
# our interface file
ifeq ($(USE_INSTALLED_OMEGA),yes)
BUILD_OMEGA_TARGET=
BUILD_OMEGA_DEP=
else
BUILD_OMEGA_TARGET=$(OMEGA_DIR) $(OMEGA_LIB)
BUILD_OMEGA_DEP=$(OMEGA_DIR)
endif

##
## RULES
##

.PHONY: all clean

all : $(BUILD_OMEGA_TARGET) build/C_omega.o

clean :
	@echo Making clean...
ifeq ($(USE_INSTALLED_OMEGA),no)
	rm -rf $(OMEGA_DIR)
endif

#	The above is a more drastic way to clean than
#	cd src && $(MAKE) veryclean $(OMEGA_MAKE_FLAGS)

build :
	mkdir $@

build/C_omega.o : src/C_omega.cc build $(INCLUDES) $(BUILD_OMEGA_DEP)
	$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(OMEGA_INCLUDE) -c $< -o $@

$(OMEGA_DIR) :
	cd src && \
	  $(TAR) -xzf the-omega-project.tar.gz

$(OMEGA_LIB) : $(OMEGA_DIR)
	cd $(OMEGA_DIR) && \
	  $(MAKE) depend $(OMEGA_MAKE_FLAGS) && \
	  $(MAKE) libomega.a $(OMEGA_MAKE_FLAGS)