# build.gmk
#
# This code is part of the Diderot Project (http://diderot-language.cs.uchicago.edu)
#
# COPYRIGHT (c) 2016 The University of Chicago
# All rights reserved.
#
# Common definitions shared by all of the runtime-system makefiles.
#
# @configure_input@
#

#
# determine the build options
#
ifeq (,$(findstring debug,$(BUILD_OPTIONS)))
  ENABLE_DEBUG=false
else
  ENABLE_DEBUG=true
endif
ifeq (,$(findstring parallel,$(BUILD_OPTIONS)))
  ENABLE_PARALLEL=false
else
  ENABLE_PARALLEL=true
endif
ifeq (,$(findstring logging,$(BUILD_OPTIONS)))
  ENABLE_LOGGING=false
else
  ENABLE_LOGGING=true
endif

# dependency directory
#
DEPDIR := .depend
$(shell mkdir -p $(DEPDIR) >/dev/null)

DEPFLAGS =	-MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td

#
# tools and flags
#
ifeq (cuda,$(TARGET_PLATFORM))
CXX =		@NVCC@ -std=c++11
AUXFLAGS = -Xcompiler 
AUXDEL = "
else
CXX =		@CXX@
AUXFLAGS = 
AUXDEL = 
endif
INCLUDES =	-I@DIDEROT_SRCDIR@/lib/include -I@TEEM_DIR@/include
CXXFLAGS =	$(DEPFLAGS) $(AUXFLAGS) $(AUXDEL) @CXXFLAGS@ @CXXFLAG_fPIC@ -fpermissive $(AUXDEL)
LDFLAGS =
CPPFLAGS =	@CPPFLAGS@ $(INCLUDES) -x c++

POSTCOMPILE =	mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d

COMMON_SRCS =	options.cxx image.cxx world.cxx nrrd.cxx

SRCS =		$(COMMON_SRCS) $(TARGET_SRCS)
OBJS =		$(patsubst %.cxx,%.o,$(SRCS))


#
# determine target platform
#
ifeq (sequential,$(TARGET_PLATFORM))
  CPPFLAGS += -DDIDEROT_TARGET_SEQUENTIAL
else ifeq (opencl,$(TARGET_PLATFORM))
  CPPFLAGS += -DDIDEROT_TARGET_CL @CPPFLAGS_CL@
else ifeq (cuda,$(TARGET_PLATFORM))
  CPPFLAGS += -DDIDEROT_TARGET_CUDA
else ifeq (parallel,$(TARGET_PLATFORM))
  CPPFLAGS += -DDIDEROT_TARGET_PARALLEL
endif

#
# add source files and flags to support logging (if enabled)
#
ifeq ($(ENABLE_LOGGING),true)
  SRCS += logging.cxx
  CPPFLAGS += -DDIDEROT_ENABLE_LOGGING
endif

#
# set debug flags, if needed
#
CXXFLAGS += $(AUXFLAGS) $(AUXDEL)
ifeq ($(ENABLE_DEBUG),true)
  CXXFLAGS += -g3 -O0
else
  CPPFLAGS += -DNDEBUG
  CXXFLAGS += -O3
endif
CXXFLAGS += $(AUXDEL)

#
# include pthreads if necessary
#
ifeq ($(ENABLE_PARALLEL),true)
  CXXFLAGS += @PTHREAD_CFLAGS@
endif

$(TARGET):	$(OBJS)
	$(LD) -r -o $(TARGET) $(OBJS)

%.o : %.cxx 
%.o : %.cxx $(DEPDIR)/%.d
	$(CXX) -c $(CPPFLAGS) $(CXXFLAGS) $<
	$(POSTCOMPILE)

# so that make won’t fail if the dependency file doesn't exist
$(DEPDIR)/%.d: ;

.PRECIOUS: $(DEPDIR)/%.d

#################### Cleanup ####################

CLEAN_FILES = 		$(OBJS) $(TARGET)
CLEAN_FILES += 		$(wildcard *.dSYM)

include @DIDEROT_MKDIR@/clean-rules.gmk